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
CN103414418BActive Publication Date: 2015-06-17JIANGSU YUYUE MEDICAL EQUIP&SUPPLY CO LTD +2
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
JIANGSU YUYUE MEDICAL EQUIP&SUPPLY CO LTD
Publication Date
2015-06-17

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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.
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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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