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Current PI control system and method of direct current motor

A technology of DC motor and control system, applied in the direction of control system, vector control system, motor generator control, etc., to achieve the effect of saving time and energy, curbing blindness, and good current control effect

Active Publication Date: 2015-06-17
JIANGSU YUYUE MEDICAL EQUIP&SUPPLY CO LTD +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the problem that the PI controller parameters are adjusted according to the parameters of the controlled object when the DC motor current closed-loop control adopts the PI controller, and propose a DC motor current PI control system and control method

Method used

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  • Current PI control system and method of direct current motor
  • Current PI control system and method of direct current motor
  • Current PI control system and method of direct current motor

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Embodiment Construction

[0022] A DC motor current PI control system and control method of the present invention will be further described in detail below with reference to the drawings and embodiments.

[0023] Such as figure 1 Shown is a DC motor current PI control system of the present invention, including a controller 110, a power drive unit 120, a DC motor 130 and a current detection sensor 140, wherein the controller 110 is composed of a comparator 111, a scaler 112, an integrator 113 and adder 114 are formed; the output terminal of comparator 111 is connected the input terminal of comparator 112 and integrator 113, the output terminal of scaler 112 and integrator 113 is connected the input terminal of adder 114, and the output terminal of adder 114 is connected The input terminal of the power drive unit 120, the output terminal of the power drive unit 120 is connected to the input terminal of the DC motor 130, the output terminal of the DC motor 130 outputs a current output signal in one way, a...

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Abstract

The invention discloses a current PI control system and method of a direct current motor and belongs to the technical field of direct current motor control. The control system comprises a controller, a power drive unit, a direct current motor and a current detection sensor. The controller is composed of a comparator, a proportioner, an integrator and a summator. The control method of the control system includes the following steps that an equivalent electric inertia parameter B of the direct current motor is identified at first, and a proportion control parameter Kp and an integral control parameter Ki of the controller are adjusted. When the control system is debugged, the parameters of the PI controller are adjusted according to parameters of the direct current motor so that the parameters of the controller can be adjusted with a target. Blindness in adjusting the parameters of the PI controller is hindered, time and labor are saved and the good current control effect can be obtained.

Description

technical field [0001] The invention relates to a DC motor current control system, in particular to a DC motor current PI control system and a control method, belonging to the field of DC motor control. Background technique [0002] DC motor current control must adopt closed-loop control to obtain excellent current control performance. The DC motor current closed-loop control system includes a controller and a controlled object. How to adjust the parameters of the PI (proportional integral) controller in a targeted manner according to different controlled objects in the DC motor current control system is a problem to be solved in the prior art. At present, in the known prior art, the proportional control parameters and integral control parameters of the PI controller are directly adjusted by trial and error method or empirical method, instead of adjusting according to the parameters of the controlled object, and the adjustment of the controller parameters is relatively blin...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02P21/00
Inventor 张懿魏海峰冯友兵
Owner JIANGSU YUYUE MEDICAL EQUIP&SUPPLY CO LTD
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