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Brushless DC motor fuzzy PID control speed regulation system and method

A technology of brushed DC motor and speed control system, which is applied in control system, electronic commutation motor control, single motor speed/torque control, etc. It can solve the problems of unsatisfactory robustness and achieve enhanced anti-interference ability , good robustness and fast rising speed

Inactive Publication Date: 2017-12-22
HARBIN UNIV OF SCI & TECH
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because the traditional PID control parameters cannot be adjusted according to the changes of the controlled object parameters, the robustness is often unsatisfactory

Method used

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  • Brushless DC motor fuzzy PID control speed regulation system and method
  • Brushless DC motor fuzzy PID control speed regulation system and method
  • Brushless DC motor fuzzy PID control speed regulation system and method

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Embodiment Construction

[0038] In order to enable those skilled in the art to better understand the technical solutions in the embodiments of the present invention, and to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the technical solutions in the present invention will be further detailed below in conjunction with the accompanying drawings illustrate.

[0039] Based on the above problems, the present invention proposes a brushless DC motor fuzzy PID control speed regulation system and method, which uses fuzzy logic for the mediation control of the brushless DC motor to realize online adjustment of the three parameters of the PID.

[0040] A brushless DC motor fuzzy PID control speed regulation method, such as figure 1 shown, including:

[0041] S101: According to the fuzzy control theory, establish a fuzzy PID controller module of the brushless DC motor speed control system;

[0042] The parameters of the motor and the tra...

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PUM

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Abstract

The invention provides a brushless DC motor fuzzy PID control speed regulation system and method. The method comprises steps of according to the fuzzy control theory, establishing a fuzzy PID controller module of a brushless DC motor speed regulation system; establishing a brushless DC motor speed regulation system module; establishing the objective function of fuzzy PID controller parameter optimization of the brushless DC motor speed regulation system; and obtaining the fuzzy relation between the fuzzy PID controller Kp, Ki, Kd and the error e and the error rate of change ec, and according to the values of the error e and the error rate of change ec, and fuzzy control rules, modifying the three parameters Kp, Ki, Kd. The invention also correspondingly provides a fuzzy control device. The method of the invention adopts the fuzzy PID control for the speed regulation in the PID control system, and has the advantages of good dynamic performance, fast rising speed, small overshoot and good robustness.

Description

technical field [0001] The invention relates to the field of motor control, in particular to a brushless DC motor fuzzy PID control speed regulation system and method. Background technique [0002] The brushless DC motor is composed of a motor body and a driver, and is a mechatronic product. In the control process of some traditional PID algorithms, the response speed is slow, the dynamic response is poor, and the processing effect on the uncertainty and nonlinear conditions of the system is not good, and it is difficult to achieve the expected effect in control. In the brushless DC motor speed control system, the function of the speed loop is to enhance the anti-interference ability of the system to the load change, and to simulate the speed fluctuation, which is the main control link of the system. Because the traditional PID control parameters cannot be adjusted according to the parameter changes of the controlled object, the robustness is often unsatisfactory. Content...

Claims

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Application Information

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IPC IPC(8): H02P6/08
CPCH02P6/08H02P6/085
Inventor 陶大军吕飞王玲玉魏瑶窦庆鹏吴建晓陈修材朱一枫
Owner HARBIN UNIV OF SCI & TECH
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