Why the servo motor rotates forward and reverse at one time?

1. Circuit failure

The circuit of the servo motor control system is composed of multiple components. The working problem of any component may cause the servo motor to malfunction. For example: controller internal fault, motor drive board fault, etc.

2. Sensor failure

The motion status of the servo motor needs to be detected and fed back through the sensor. When the sensor is faulty, it will cause the servo motor motion to be distorted. For example, the error of the feedback signal is too large, the sensor is aging, the contact is poor, etc.

3. Mechanical failure

The servo motor and the mechanical device are matched, and mechanical problems will seriously affect the work of the servo motor. For example, the driving device is aging, mechanical parts are loose, etc.

In view of the above possible reasons, the problem of the servo motor rotating forward and reverse can be solved by troubleshooting the specific reasons and performing corresponding repairs and replacements.

Conclusion

Through the above analysis of the servo motor rotating forward and reverse, we can see that this problem is caused by a variety of possible reasons. Therefore, when operating the servo motor, you must pay attention to safety and usage methods to avoid problems.

Analysis and Solution of Servo Motor Start-stop Impact Problem

1. Problem analysis

In actual use, shock may occur when the servo motor starts or stops. This impact usually takes the form of a violent shaking of the motor or a sudden stop or start of the machine. This situation will not only affect the normal operation of the equipment, but also shorten the life of the equipment.

There are many reasons for such problems, mainly including the following aspects:

1.1. The power supply fluctuates or the voltage is unstable. Servo motors require stable power to operate properly. If the power supply is unstable, shocks may easily occur.

1.2. Program control error. The operation of the servo motor requires program control. If there is an error in the program, it may cause impact problems.

1.3. Sudden change in load. Servo motors are often used in dynamic load applications. When the load changes suddenly, the motor is prone to shock.

1.4. The parameter settings are incorrect. The servo motor has many parameters that need to be set, including speed, acceleration, deceleration, tracking error, etc. If the parameters are set incorrectly, shock may easily occur.

2. Solution

For the above reasons, we can take the following measures to solve the problem of servo motor start and stop impact:

2.1. Stable power supply. It is recommended to use a stable power supply when using servo motors. You can use UPS power supply or voltage stabilizer and other equipment to solve the power supply problem.

2.2. Check program controls. The program control of the servo motor needs to be carefully checked to ensure that the program runs stably.

2.3. Balance the load. In response to the problem of sudden load changes, the occurrence of shocks can be reduced by adjusting the structure of the equipment or balancing the load.

2.4. Set the parameters correctly. Correctly setting the parameters of the servo motor can effectively avoid the occurrence of impact. It is recommended to adjust the motion parameters of the motor according to the characteristics and requirements of the equipment.

Can Stepper Motors Achieve Infinite Speed Change?

Stepper motors cannot achieve infinite speed change, but they can achieve a certain degree of speed change by changing the step angle and driving method.

1. Working principle of stepper motor

A stepper motor is a motor controlled by different phases, which can achieve precise positioning and rapid acceleration and deceleration. The principle is to make the motor rotor rotate according to a fixed step angle under the changing phase sequence modulation. The movement of a stepper motor is discrete and can only produce a fixed step distance and cannot achieve seamless and continuous rotation.

2. Definition and implementation of infinitely variable speed

Continuously variable speed refers to achieving stepless speed change by changing the motor output torque and speed. It can achieve very delicate adjustments, so that the motor's speed and torque can be seamlessly switched, and almost any change can be achieved. There are two main ways to achieve infinite speed: frequency converter and speed regulator. The frequency converter uses the speed regulation function of the frequency converter to achieve stepless speed change, and the speed regulator realizes stepless speed change by adjusting the mechanical transmission ratio or changing the motor voltage flow.

3. Reasons why stepper motors cannot achieve infinite speed change

Although stepper motors have great advantages in terms of accuracy and stability, due to their inherent motion discreteness, they cannot achieve stepless changes in motor output torque and speed, so stepless speed changes cannot be achieved. The speed of the stepper motor can only be adjusted by changing the pulse frequency and phase sequence, and the number of steps is also fixed, so the stepper motor has the defect of "step by step".

4. Change the step angle and driving mode to achieve a certain degree of speed change

Although the stepper motor cannot achieve infinite speed change, it can achieve a certain degree of speed change by changing the step angle and driving method. The smaller the step angle, the faster the motor rotates, and the larger the step angle, the slower the motor rotates. Therefore, changing the step angle can achieve a certain degree of speed change. In addition, driving methods such as open-loop control, closed-loop control, and micro-step control can also affect the motor's speed and torque. For example, microstep control can be used to divide the step distance of a stepper motor into many small steps, thereby reducing the vibration of the motor and improving accuracy.

Conclusion

Although stepper motors cannot achieve infinite speed change, a certain degree of speed change can be achieved by changing the step angle and driving mode. Therefore, stepper motors are still an important driving method in automation fields that require fine positioning and rapid acceleration and deceleration.