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Method for achieving multi-motor synchronism based on armature current detecting

An armature current, multi-motor technology, applied in the direction of multiple motor speed regulation, etc., can solve the problems of difficult to obtain accurate mathematical models, uncertainty, ambiguity, and inability to fully satisfy, shorten the response time, and reduce overshoot. , the effect of simple structure

Active Publication Date: 2014-08-13
贺州市八步区市场监督管理局
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Problems solved by technology

However, the "generalized control object" of the multi-motor drive system has the characteristics of nonlinearity, incompleteness, uncertainty and ambiguity, and its precise mathematical model is not easy to obtain, and in the process of designing the control system, such systems cannot be completely Satisfy the more stringent conditional assumptions proposed by classical control theory and modern control theory

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  • Method for achieving multi-motor synchronism based on armature current detecting
  • Method for achieving multi-motor synchronism based on armature current detecting
  • Method for achieving multi-motor synchronism based on armature current detecting

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Embodiment Construction

[0040] The present invention will be further described below in conjunction with drawings and embodiments.

[0041] The present invention first utilizes the DC motor drive chip to sample the armature current signal to obtain the armature current component affecting the synchronous operation of the motor, including the DC component of the armature current and the pulsating component of the armature current. The motor speed can be detected through the relationship between the armature current pulsation component and the motor speed, thus reflecting the speed synchronization of the motor. A fuzzy PID controller is designed, which uses the size of the armature current DC component to reflect the size of the load, and according to the actual stroke value deviation e and deviation change rate e of the motor load c Output the parameter value K of the corresponding PID controller p 、K i 、K d . The fuzzy PID controller calculates the current control quantity according to the obtain...

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Abstract

The invention provides a method for achieving multi-motor synchronism based on armature current detecting and belongs to the technical field of motor control. The method comprises the steps that (1) a direct-current motor drives a chip to sample armature current signals; (2) the waveform of an armature current pulsation component is drawn on a computer, according to the relation of the armature current pulsation component and motor rotating speed, the motor rotating speed is detected, and the magnitude of an armature current direct-current component is recorded; (3) a blurry PID controller is designed; (4) the blurry PID controller designed in the step (3) is used for computing current controlled quantity which is transmitted to a motor driver; and (5) a pulse width modulation (PWM) technology is used for regulating and controlling the motor rotating speed, and accordingly speed synchronization and position synchronization of multiple motors are achieved. According to the method, a structure is simple, adjusting is convenient, reliability is high, the armature current pulsation component is used for detecting the speed synchronism of the multiple motors, and external devices such as a sensor are not used.

Description

technical field [0001] The invention relates to the technical field of motor control, in particular to a method for detecting and realizing multi-motor synchronization based on armature current. Background technique [0002] With the rapid development of science and technology, the requirements for various mechanical properties and product quality are also gradually increasing. The control of only one motor can no longer meet the needs of modern technology development, and people need to control multiple motors synchronously. The speed of the motor is one of the important parameters for synchronous control of multiple motors, so it involves the detection and adjustment of the speed of the motor. [0003] At present, there are many methods for detecting motor speed at home and abroad. According to different theories, analog speed measurement method, synchronous speed measurement method and counting speed measurement method have been successively produced. The traditional mot...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02P5/50
Inventor 林景栋周宏波马亮李茂盛徐春慧游佳川邱欣谢杨
Owner 贺州市八步区市场监督管理局
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