Control method of linear stepper motor

1.Working principle of linear stepper motor

A linear stepper motor is a motor that drives a slider to move along a straight line through an electromagnetic field. Its working principle is mainly to generate an alternating magnetic field by alternately exciting electromagnets, and this magnetic field pushes the slider to move along a straight line. When one electromagnet is activated, the magnetic field it generates attracts the slider and moves toward it; when the other electromagnet is activated, the opposite magnetic field generated pushes the slider to move in the opposite direction. By alternately activating these two electromagnets, the slider can reciprocate along a straight line.

2.Structural characteristics of linear stepper motors

1.High precision: The direct drive structure has no backlash, the system accuracy mainly depends on the position detection element, and the appropriate feedback device can reach the sub-micron level.

2.High acceleration and speed: The linear motor has achieved an acceleration of 5.5g and a speed of 2.5m/s.

3.No mechanical contact wear: There is no mechanical contact between the stator and the mover, and the system motion contact is borne by the linear guide. There are fewer transmission parts, smooth operation, low noise, simple structure, simple maintenance, or even maintenance-free, high reliability, and long service life. 

‌4.Modular structure‌: The stator adopts a modular structure, and the running stroke is theoretically unlimited‌.

‌5.Strong adaptability‌: The primary core can be sealed as a whole with epoxy resin, which has good anti-corrosion and moisture-proof properties and is easy to use in harsh environments‌.

3.Control methods of linear stepper motors

1.Open-loop control‌: This is the most basic control method, which controls the position and speed by directly controlling the current size and direction. Its advantage is simple control, but its disadvantage is that the control accuracy is not high and it is easily affected by external interference‌.

2‌.Closed-loop control‌: By installing position feedback sensors such as encoders to obtain position and speed information, and then adjusting the motor current through the controller to achieve the purpose of controlling the position and speed of the motor. This method has high control accuracy, but the cost is high‌.

‌3.Full-step control‌: Each pulse signal causes the motor to rotate a full step angle, which is suitable for applications that require high-precision positioning‌.

‌4.Half-step control‌: Improved on the basis of full-step control, each pulse signal causes the motor to rotate half a step angle, with a faster speed but lower accuracy‌. ‌5. Microstepping control‌: By changing the pulse width or phase, the motor rotates with a smaller step angle, which is suitable for high-precision and high-dynamic applications.

‌6.Current control‌: By adjusting the current flowing through the motor to control the torque and speed, it is suitable for applications that require smooth rotation.

‌7.PID control‌: A feedback control method that adjusts the motor torque by measuring the error between the actual position and the target position, which is suitable for complex and high-dynamic applications.

‌8.Vector control‌: Using the motor mathematical model to optimize performance, it is suitable for applications with high performance and reliability requirements.

4.Precautions for installing linear stepper motors

1.Avoid disassembling motor components‌: During installation and maintenance, avoid disassembling any part of the motor by yourself, as disassembly may cause foreign matter to enter or affect assembly accuracy.

‌2.Protect the lead screw and lead wires‌: When installing and taking the motor, be careful not to lift, pull, or hold the lead screw directly with your hands to avoid radial force on the lead screw; at the same time, protect the lead wires of the motor and do not pull them hard.

‌3.Choose a suitable installation environment‌: Clean the site before installation to ensure that there are no debris and obstacles, check whether the foundation of the motor is firm, and the levelness and firmness must meet the requirements‌.

‌4.Avoid vibration and wiring errors‌: Avoid direct impact on the shaft during installation, and use a flexible connector to connect the encoder shaft; wiring should be done when the power is off, pay attention to the power polarity and line distribution, and avoid inductive noise‌.

‌5.Pay attention to the operating temperature of the motor‌: Ensure that the operating environment temperature of the motor is between -20℃~55℃ to avoid overheating of the motor due to long-term operation‌.

‌6.Correct installation and debugging‌: Select the appropriate motor specifications according to the installation environment and motion status, ensure that the installation is firm, the circuit connection is correct, and the voltage and current meet the requirements; adjust the motor speed and acceleration during debugging, and check the motor operation status‌.

By following these precautions, the service life of the linear stepper motor can be effectively extended and its operating efficiency and reliability can be improved.

How to adjust the dip switch of the stepper motor driver

‌1.Explanation of stepper motor driver

The stepper motor driver is an actuator that converts electrical pulses into angular displacement, which is mainly used to control the rotation and movement of the stepper motor. It realizes the drive of the motor by converting the control signal into the drive signal of the motor. The stepper motor driver is generally composed of a pulse generator, a power module, a signal decoder and a drive module. The pulse generator is used to generate a control signal (pulse signal) to control the movement of the motor; the power module provides power to the motor so that the motor can operate normally; the signal decoder converts the pulse signal into a motor drive signal to control the operation of the motor; the drive module is used to amplify the motor drive signal to provide sufficient power to drive the motor. ‌

2.Classification of stepper motor drivers

1.Voltage driver: It controls the speed and position of the stepper motor by changing the drive voltage. This driver is characterized by simple structure and low cost, but poor dynamic performance, easy to heat up and lose step.

‌2.Constant current driver: It drives the stepper motor by controlling the current to ensure that the current of the motor remains constant during operation. This type of driver is characterized by good dynamic performance and low heat generation, but the structure is relatively complex and the cost is high.

‌3.Microstep driver‌: It is a high-precision drive method that achieves more detailed position control by dividing the basic step of the stepper motor. This driver has the characteristics of high precision, low vibration and low noise, and is suitable for application scenarios with high precision requirements.

‌4.Closed-loop driver‌: By adding an encoder or other sensor to achieve real-time feedback on the position of the stepper motor, high-precision position control is achieved. This driver has the characteristics of high precision, high dynamic performance and low step loss rate, but the structure is relatively complex and the cost is high.

3.Reasons for stepper motor driver alarm

1.Power supply problems‌ are one of the common reasons for stepper motor driver alarms. This includes unstable power supply voltage, too high or too low power supply voltage, poor power supply line contact, and power switch failure. Solutions to these problems include checking whether the power supply voltage meets the requirements, adjusting the power supply voltage in time, repairing or replacing the power supply line contact, and checking and replacing the power switch‌.

2.Motor problems‌ may also cause stepper motor driver alarms, including motor damage, poor contact between the rotor and stator, and winding short circuit. Solutions to motor failures may include checking whether the motor is overheating and whether it needs to be replaced or maintained, such as cleaning and lubrication.

3.Control signal problems are also an important factor, including poor contact of the control signal line, controller failure, and unstable control signal voltage. Solutions to these problems may involve repairing or replacing the control signal line, checking and replacing the controller, and adjusting the control signal voltage.

4.Problems with the driver itself, such as a damaged or improperly adjusted driver, can also cause alarms. Solving these problems may require replacing the driver or adjusting the driver settings.

4.How to adjust the stepper motor driver dip switch

1.Understand the basic principles of stepper motor drivers

A stepper motor driver is an electronic device used to control stepper motors. It converts current into signals that the stepper motor can understand, thereby driving the motor to rotate precisely. Before adjusting the dip switch, you need to understand the basic principles of the stepper motor driver.

2.Determine the working mode and parameter settings

Before adjusting the dip switch of the stepper motor driver, you first need to determine the working mode and parameter settings. The working mode can be full-step mode, half-step mode or micro-step mode; parameter settings include step angle, acceleration, drive current, etc.

3.Consult the instruction manual of the stepper motor driver

Stepper motor drivers are usually equipped with an instruction manual, which contains detailed parameter settings and information about the dip switches. Before making adjustments, read the instruction manual carefully to understand the location and corresponding functions of the dip switches.

4.Locate and adjust the dip switches

According to the instruction manual of the stepper motor driver, locate the dip switches on the driver. Dip switches are usually a row of small switches that can be set to different functions and parameters by toggling. Before adjusting the dip switches, it is recommended to turn off the power supply to avoid short circuits or other damage to the circuit.

5.Adjust the dip switches as needed

Adjust the dip switches from one position to another as needed. When adjusting the dip switches, carefully check the information in the instruction manual to ensure that they are adjusted to the correct position. Some dip switches may have multiple options, while others may only have two options (on/off).

6.Start and test the stepper motor driver

After the adjustment is completed, reconnect the power supply and start the stepper motor driver. According to the working mode and parameter settings of the driver, perform corresponding tests to ensure that the motor can rotate as expected. If other parameters need to be adjusted, you can refer to the instruction manual again and repeat the above steps.

7.Test and application of the adjusted stepper motor driver

Once the dip switches of the stepper motor driver are successfully adjusted, some tests and practical applications can be performed. In the test, you can verify whether the set working mode and parameters are as expected. In the application, you can connect the stepper motor driver to the corresponding equipment or system to achieve the desired functions and performance.

Operation mode of integrated servo motor

1.Definition of integrated servo motor

Integrated servo motor‌ is a motor that integrates servo motor and driver. It has the characteristics of compact structure, easy installation and fast response speed. The integrated servo motor has a servo driver integrated inside it, which can directly receive signals from the controller and perform corresponding actions. Compared with traditional split servo motors, this design reduces the number of external connecting parts, further simplifying the installation and maintenance process of the system. In addition, due to the integrated design, the integrated servo motor also has significant advantages in performance, such as higher accuracy and faster response speed, thereby improving the overall performance and reliability of the system.

‌2.Components of integrated servo motor

1.Motor part‌: including rotor, stator, windings, magnetic poles and other components. There are various types of motors, such as DC servo motors, AC servo motors, stepper servo motors, etc. Each type of motor is different in structure and control method.

2.Sensor part: usually includes position sensor, speed sensor, torque sensor, etc., which are used to detect the position, speed, torque and other parameters of the motor in real time, and feed the detection results back to the control system for real-time adjustment.

3.Controller part‌: Usually composed of a control chip, amplifier, encoder, etc., used to receive parameters fed back by sensors and output control signals to the motor to control and adjust the position, speed, torque and other parameters of the motor. .

4.Power supply part‌: Usually composed of power transformer, rectifier, filter, etc., used to provide stable power supply voltage and current to ensure the normal operation of the motor.

5.Mechanical part‌: Usually composed of reducers, couplings, transmission devices, etc., used to convert the rotational motion output by the motor into linear motion or other specific motion forms to meet different application requirements.

3.Operation mode of integrated servo motor

1.Position mode‌: This is the most commonly used control mode for servo motors. The host computer sends high-speed pulses of a certain frequency and cooperates with the direction signal to realize the forward and reverse rotation of the motor. By adjusting the frequency of the pulses, the speed of the servo motor can be changed. The core of the position mode is the position closed-loop control system, which consists of position sensors, controllers, drives and motors. It uses PID control algorithm to achieve precise control of the motor position by adjusting the proportional coefficient, integral coefficient and differential coefficient. Position mode is widely used in situations that require precise positioning, such as CNC machine tools, robot joints, automated assembly lines, etc.

2.Speed ​​mode‌: Speed ​​mode uses analog quantities to control the rotation speed of the motor. Although speed mode has fewer applications because it can control speed with the same accuracy as position mode, it still has its uses in certain specific applications. The core of speed mode is the speed closed-loop control system, which consists of speed sensor, controller, driver and motor. It also uses PID control algorithm to eliminate speed deviation and make the motor shaft run at a constant or changing speed.

3.Torque mode‌: Torque mode is usually used in constant voltage control to control the output torque of the servo motor through analog quantities. This mode is combined with the position mode for closed-loop control, and the effect is more ideal. The control of torque mode is more complicated, and it is necessary to detect the output current of the servo drive and perform torque control based on the current feedback signal.

4.Application scope of integrated servo motor

‌1.Industrial automation‌: Integrated servo motors play a vital role in the field of industrial automation and are widely used in robotic arms, conveyors, assembly lines and other equipment. They realize efficient production processes and improve production efficiency and product quality through precise position control and motion control. The fast response and precise position feedback capabilities of servo motors enable it to adapt to complex industrial environments and task requirements‌.

2.Robot technology‌: Servo motors are an ideal choice for robot joint drive. They can provide high-performance power output and flexible motion control to meet the different needs of robots in various industries, services and special environments. In fields such as automated production lines and logistics warehousing, servo motor-driven robots can achieve efficient operations and automation tasks‌.

3.CNC machine tools‌: Integrated servo motors are widely used in CNC machine tools, which can achieve precise motion control and position control, provide high-speed, high-precision working performance, and meet the needs of modern manufacturing for equipment automation and intelligence‌.

4.Medical equipment‌: Servo motors are widely used in various medical equipment, such as medical robots, imaging equipment, surgical instruments, etc. The high precision and reliability of servo motors play a vital role in medical equipment, ensuring the stability and safety of medical equipment‌.

5.Aerospace‌: In the field of aerospace, servo motors are widely used in the steering gear system of aircraft to achieve attitude control and flight stability of the aircraft by controlling the rudder surface of the aircraft. The rapid response capability and precise control capability of the servo motor enable the aircraft to achieve various complex flight movements, ensuring flight safety and stability‌.

In addition, integrated servo motors are also used in medical equipment, 3D printing, textiles, printing and other industries. With the continuous development of technology, its application scenarios will continue to expand, providing more efficient and accurate solutions for various industries‌.

Application fields and advantages of five-phase stepper motors

1.Definition of five-phase stepper motors

A five-phase stepper motor is a motor powered by a five-phase AC power supply. Its structure is more complex than that of a four-phase stepper motor, and it can provide higher control accuracy and finer step lengths. This type of motor is usually used in application scenarios that require high-precision control, such as precision CNC machine tools, high-precision robots and other equipment. The working principle of a five-phase stepper motor is to control the power-on sequence of the five windings and the magnitude of the current to make the rotor produce different rotation angles, thereby achieving precise position control. Due to the high precision of the five-phase stepper motor, it has been widely used in high-precision automation equipment.

2.How to control the direction of the five-phase stepper motor

1.Change the direction of the current

The direction of the five-phase stepper motor can be achieved by changing the direction of the current. Usually, a five-phase stepper motor has two sets of coils, each with two pins, marked as A+, A- and B+, B-. If you want the motor to rotate clockwise, the current should enter the coil from A+ and B- and exit the coil from A- and B+; if you want the motor to rotate counterclockwise, the current should enter the coil from A- and B+ and exit the coil from A+ and B-.

2.Change the step sequence

Stepper motor control is actually controlling the step sequence of the motor. The step sequence of a five-phase stepper motor is AB-BC-CD-DE-EA. If you need to change the direction of the motor to the opposite direction, you need to change the step sequence. The method is to reverse the flow of current, that is, first energize the E and D coils, then energize the A and E coils, and so on.

3.Use a direction controller

If you don't want to change the connection method or step sequence in the circuit, you can also use a direction controller to change the direction of the five-phase stepper motor. The direction controller can add a reversing switch at the input or output of the motor control signal. When you need to change the direction, just switch the switch.

3.Advantages of five-phase stepper motors

1.Smooth motion and high resolution: The five-phase stepper motor makes the rotation of the stepper motor smoother by introducing more phases, reduces vibration and noise, and improves the stability of the mechanical system. It can achieve a smaller step angle and improve the resolution of the stepper motor through microstepping, which is very useful for applications that require precise positioning and control. 

2.Low speed and high torque: The five-phase stepper motor can provide higher output torque at low speed, which is very beneficial for some applications that require low speed and high torque output, such as medical equipment and precision instruments. 

3.Reduce resonance and high-speed performance: At certain frequencies, stepper motors may resonate, resulting in unstable motion. Five-phase stepper motors can effectively reduce resonance and improve the smoothness of the system's motion. At the same time, it can better control the motor at high speed and reduce the possibility of losing steps, which is very important for applications that require high-speed motion, such as printing presses and CNC machine tools. ‌

4.High efficiency: By better controlling the phase of the motor, the five-phase stepper motor can achieve the same output power at a lower current, thereby improving the energy efficiency of the system. ‌

5.Strong adaptability: The five-phase stepper motor driver is suitable for various stepper motors, including different types of motors such as bipolar, quadrupole and octapole, and has a wide range of applicability. ‌

4.Application fields of five-phase stepper motors

1.Automation equipment and instruments: The five-phase hybrid stepper motor is suitable for various small automation equipment and instruments, such as pneumatic marking machines, labeling machines, cutting machines, laser marking machines, plotters, engraving machines, CNC machine tools and pick-and-place devices. In these applications, the five-phase stepper motor can provide low vibration, low noise, high precision and high speed performance to meet user needs. ‌

2.Precision CNC machine tools and high-precision robots: Due to its high-precision characteristics, the five-phase stepper motor is widely used in high-precision automation equipment such as precision CNC machine tools and high-precision robots. These devices have high requirements for precision and performance. Five-phase stepper motors can provide finer steps and higher control accuracy to ensure accurate operation of the equipment. 

3.Industrial automation, machine tools, printing presses: Five-phase stepper drives are mainly used in industrial automation, machine tools, printing presses and other fields, with precise angle and speed control as the main features. These application areas require stepper motors to provide stable and reliable operation and precise position control. 

4.Textile machinery and equipment: Stepper motors are widely used in textile machinery and equipment, such as computer embroidery machines. In particular, five-phase hybrid stepper motors use high-phase stepper motors to reduce step angles and improve control accuracy. They are suitable for applications with smooth operation, low noise, fast response and long service life. 

5.Conclusion 

As a special stepper motor, the five-phase stepper motor has the advantages of high precision, high efficiency and low noise. Its working principle, circuit structure and control method are different from those of traditional stepper motors, but its application range is wider. In the future, with the continuous advancement of science and technology and people's increasing demand for high-precision intelligent equipment, five-phase stepper motors are expected to be used in more fields.

Design features and application areas of hollow shaft stepper motors

1.The meaning of hollow shaft stepper motor

The hollow shaft stepper motor is a special stepper motor, which is characterized by a hollow motor shaft. This design allows the motor shaft to be used not only to transmit torque, but also allows other devices (such as optical shafts, slender tools, etc.) to be inserted through the shaft center, thereby achieving more complex application requirements.

2.Working principle of hollow shaft stepper motor

The working principle of hollow shaft stepper motor is mainly based on electromagnetic induction and stepper drive control. This motor consists of a rotor and a stator, in which the stator generates an electromagnetic field, which acts on the rotor to cause it to rotate. By inputting a specific pulse signal, the stepper drive can control the step and speed of the motor. One of the design features of the hollow shaft stepper motor is that the center of its rotor is hollow. This design allows the shaft center to pass through, which is suitable for application scenarios where other devices or transmission parts need to pass through the rotor shaft. In addition, the design and application of hollow shaft stepper motors also optimize mechanical design, facilitate wiring, and save design space and production costs. For hollow shaft stepper motors with precision requirements, they have very high requirements for the precision of the hollow shaft or inner hole diameter and thread, mainly because most of these motors are customized to meet the needs of using third-party trapezoidal screws or ball screws. Such high-precision requirements ensure the mechanical accuracy and operating accuracy of the stepper screw motor

3.Design features of hollow shaft stepper motors

1.Hollow shaft design: Compared with traditional motors, the center of the rotor of the hollow shaft stepper motor is empty and can pass through the axis, which is suitable for those application scenarios where other equipment or transmission parts need to pass through the rotor shaft. 

2.High-precision positioning: Since the step distance and angle of rotation are controllable each time, the hollow shaft stepper motor can achieve high-precision positioning movement to meet the needs of high-demand industrial applications. 

3.High efficiency: The hollow shaft stepper motor adopts digital control technology, which can provide high-efficiency operation while achieving high precision and saving energy. ‌

4.Programmability: The operation mode and parameters of the hollow shaft stepper motor can be controlled by programming, and can be adjusted according to different application requirements, with good flexibility and scalability

4.Specific application areas of hollow shaft stepper motors

1.Automation equipment: Hollow shaft stepper motors are widely used in automation equipment, such as robots, automated production lines, CNC machine tools, etc. In these devices, hollow shaft stepper motors can provide precise position control and motion control, while facilitating the passage of cables, trachea, etc.

2.Medical equipment: In the field of medical equipment, hollow shaft stepper motors are often used in surgical robots, medical imaging equipment, laboratory automation equipment, etc. These devices have high requirements for precision and reliability, and hollow shaft stepper motors can meet these requirements and facilitate the layout of cables, trachea, etc.

3.Printing equipment: In printing equipment, hollow shaft stepper motors can be used to drive printing rollers, paper conveying and other components. The hollow shaft design can facilitate the passage of cables, trachea, etc., and improve the integration and reliability of the equipment.

4.Textile machinery: In textile machinery, hollow shaft stepper motors can be used to drive components such as yarn winding and looms. The hollow shaft design can facilitate the passage of cables, air pipes, etc., and improve the integration and reliability of the equipment.

5.Stage equipment: In stage equipment, hollow shaft stepper motors can be used to drive components such as stage lifting and stage rotation. The hollow shaft design can facilitate the passage of cables, air pipes, etc., and improve the integration and reliability of the equipment.

6.Aerospace: In the field of aerospace, hollow shaft stepper motors can be used to drive components such as rudders and landing gear. The hollow shaft design can facilitate the passage of cables, air pipes, etc., and improve the integration and reliability of the equipment.

7.Vehicle engineering: In vehicle engineering, hollow shaft stepper motors can be used to drive components such as electric windows and seat adjustments. The hollow shaft design can facilitate the passage of cables, air pipes, etc., and improve the integration and reliability of the equipment.

5.Conclusion

With the development of microelectronics and computer technology, the demand for stepper motors is increasing day by day, and they are used in various fields of the national economy. Hollow shaft stepper motors rely on their professional technology and experience in design, manufacturing and application to provide a rich product range to meet the needs of different customers and different applications.

Source:https://steppermotor2.hatenablog.com/entry/2024/08/05/173050

How to choose and judge the quality of integrated stepper motors

1.Introduction

An integrated stepper motor refers to a design that integrates the driver and stepper motor of a stepper system into one. This design not only greatly saves installation space, but also simplifies the cumbersome wiring process and enhances the practicality of the stepper system. Integrated stepper motors usually inherit the excellent characteristics of control and drive in one, saving design costs and time costs for customers, and are suitable for customers to choose stepper system solutions

2.Methods for selecting suitable integrated stepper motors

1.Selection of step angle: The step angle depends on the requirements of load accuracy. Convert the minimum resolution of the load to the motor shaft, and the angle that each equivalent motor should walk. The step angle of the motor should be equal to or less than this angle. Common step angles on the market are 0.36 degrees/0.72 degrees, 0.9 degrees/1.8 degrees, 1.2 degrees, etc.

2.Selection of static torque: The basis for the selection of static torque is the load of the motor, including inertial load and friction load. The static torque should be 2-3 times the friction load. Once the static torque is selected, the motor base and length can be determined.

3.Current selection: Motors with the same static torque have very different operating characteristics due to different current parameters. The current of the motor can be determined based on the torque-frequency characteristic curve.

4.Speed ​​and accuracy: When the speed requirement is high, a motor with a larger phase current and a smaller inductance should be selected to increase the power input, and a higher supply voltage should be used when selecting the driver. Determine the requirements for positioning accuracy and vibration, and determine whether and how many subdivisions are required.

5.Special specifications and environmental adaptability: If a stepper motor with special specifications is required, such as the diameter, length, and extension direction of the output shaft, it is usually necessary to communicate with the manufacturer and customize it within the scope allowed by technology. For special environments, such as waterproof and corrosion-resistant stepper motors, they are suitable for certain special occasions. For example, underwater robots require waterproof motors. ‌

3.Methods for judging integrated motor failure

1.Check insulation resistance: Use an insulation resistance megohmmeter to measure the insulation resistance of the motor. If the insulation resistance is greater than 0.5 megohms, it means that the insulation performance of the motor is good. ‌

2.Test DC resistance: Use the resistance range of a multimeter to test the DC resistance of the three windings of the motor. If the DC resistance of the three windings is similar and the deviation is small, it means that there is no inter-turn short circuit in the winding. ‌

3.Manual rotation test: Without connecting any equipment or wires, manually rotate the motor shaft. If it rotates smoothly and there is no jamming, it means that the motor is normal. ‌If jamming or failure to rotate occurs, it may indicate that the motor is broken or there is an internal problem. ‌

4.No-load power-on test: Power on the motor and observe whether the three-phase current is balanced and whether the motor rotates smoothly. Pay attention to abnormal conditions such as temperature rise and abnormal noise of the motor. ‌

5.Check the stepper motor driver: If the red light of the stepper motor driver keeps flashing, it may be that the power supply voltage is unstable or there is a problem with the control signal. Use a multimeter or other instrument to check the power supply voltage and control signal, and also check whether the stepper motor itself has any faults.

Source:https://ameblo.jp/angla27/entry-12861479660.html

Introduction to the functions and troubleshooting of closed-loop stepper motor drivers

1.Overview

A closed-loop stepper motor driver is a motor driver that integrates multiple functions such as speed regulation, positioning, increasing output torque, and reducing mechanical noise. It is mainly used in equipment and occasions that require high-precision positioning, stability, and reliability. This article will start from the principle and function of the closed-loop stepper motor driver and introduce its characteristics and solutions to common faults in detail.

2.Characteristics of closed-loop stepper motor drivers

1.High precision: The closed-loop stepper motor driver can provide high-precision motion control and can achieve operation with small steps, with the minimum step reaching 0.001mm.

2.High speed: The maximum speed of the closed-loop stepper motor driver can generally reach 1000r/min, and its speed and torque output are related to the load and voltage of the motor.

3.Low noise: The output torque of the closed-loop stepper motor driver is stable, the operation is smooth, and the mechanical noise can be reduced.

4.Low vibration: The change of the output signal of the closed-loop stepper motor driver can make the control system respond more quickly, thereby reducing vibration and jitter and improving the control accuracy of the motor.

5.High reliability: The closed-loop stepper motor driver adopts a closed-loop control system, which can achieve precise position control and improve the reliability of the system.

3.Common faults and treatment methods

1.Emergency stop fault: When the controller stops suddenly, the motor driver will rotate too fast. The treatment method for this fault is to restart the controller for debugging and check whether the wiring of the motor driver is normal. If the wiring is confirmed to be correct and the fault still exists, the motor driver needs to be replaced.

2.Parameter setting error: When the parameters of the motor driver are set incorrectly, abnormal or unsmooth movement will occur. For this fault, the solution is to carefully check whether the equipment parameter settings are correct and make corresponding adjustments.

3.Excessive noise: When the motor is running and there is a fault of excessive noise, it is necessary to check whether the motor has foreign matter or wear and tear, and adjust and replace the parts with poor contact.

4.Unable to move: When the motor cannot move normally, it is necessary to check whether the power supply of the controller is stable, whether the control circuit is faulty, and to check and repair the problems one by one.

5.Failed to return to zero: When the motor cannot return to zero, it is necessary to check whether the connection between the motor and the sensor is normal, whether the parameter settings are correct, etc., and make corresponding adjustments.

4.Conclusion

The above is a detailed explanation of the function introduction and troubleshooting of the closed-loop stepper motor driver in this article. The closed-loop stepper motor driver has a wide range of applications, but it also has many fault phenomena. Therefore, the ability to repair and troubleshoot is also very important. Readers can have a deeper understanding of the driver through the study of this article and be able to better deal with faults.