How do various types of motors automatically regulate power and circuits?

Servo motors work by monitoring and adjusting the motor's operating status through an internal feedback system, enabling the motor to operate at a predetermined position and speed. In a servo motor, an encoder is usually used as a feedback sensor to control and adjust the motor by detecting the position and speed signals of the motor rotor.

The main structure of a servo motor includes: motor body, encoder, and controller. The motor body is the component responsible for generating power, which can be used as DC motor, AC motor, stepping motor, etc. The encoder is a sensor used to detect the position, speed, angle and other information of the motor rotor, and there are two common types of encoders: absolute encoder and incremental encoder. The controller is used to receive the feedback signal from the encoder, and then calculate the control algorithm and output the control signal to control and adjust the motor.

There are many kinds of control algorithms for servo motors, among which the more common ones are PID control algorithm, fuzzy control algorithm, adaptive control algorithm, etc. PID control algorithm refers to the proportional-integral-derivative control algorithm, and its basic idea is to obtain the control signal through proportional, integral, and differential processing of the error. Fuzzy control algorithm is a kind of nonlinear control algorithm, which adopts fuzzy mathematics to describe the system, and arrives at the processing result through reasoning and judgement. Adaptive control algorithm is an autonomous learning control algorithm, which can continuously self-adjust and optimise over time to improve the control accuracy of the motor.

Servo motors can achieve a variety of control modes in the process of application, including position control mode, speed control mode, torque control mode and so on. Position control mode is to control the motor to reach the target position by controlling the motor output angle (or position) signal. Speed control mode is to control the motor to reach the target speed by controlling the speed signal output from the motor. Torque control mode means to control the motor to reach the target torque by controlling the torque signal output from the motor.

In the application of servo motors, the closed-loop control mode is usually used for control. Closed-loop control refers to the control of the system through the use of feedback signals to improve control accuracy. Relative to closed-loop control is open-loop control, open-loop control is only based on input signals to control the output, there is no feedback link, and it is easy to be affected by external interference and lead to large control errors.

In summary, the working principle of the servo motor is to monitor and adjust the operating state of the motor through the internal feedback system, so as to achieve accurate control. Servo motors are widely used, with a variety of control algorithms and control modes, and the closed-loop control method is more stable and reliable. With the development of automation technology, servo motor technology will have more application scenarios and development space.

First, the application of motor power regulation

Motor power regulation is mainly used in the need to adjust the motor speed according to the size of the workload, such as production lines, industrial machinery, ships and so on. In some places where energy saving and consumption reduction is required, the energy consumption structure can also be optimised by adjusting the motor power.

Second, the motor power adjustment method

1. Artificial regulation

Artificial regulation that is, through human operation to adjust the power of the motor. There are mainly the following two adjustment methods:

(1) manual knob adjustment: turn the manual knob to the corresponding position to change the output power and speed of the motor.

(2) Manual remote control adjustment: Adjust the output power and speed of the motor by manual remote control to achieve wireless remote control.

2. Automatic adjustment mode

The automatic adjustment method is to realise the power adjustment of the motor through the computer, PLC controller and other automatic devices. There are mainly the following two regulation methods: