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PID control system for DC motor speed and control method thereof

A DC motor and control system technology, applied in the direction of single motor speed/torque control, general control system, control/regulation system, etc., to achieve the best speed control effect, save time and energy

Active Publication Date: 2009-08-05
常熟紫金知识产权服务有限公司
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Problems solved by technology

[0003] In order to solve the problem that the parameters of the PID controller are adjusted according to the parameters of the controlled object when the PID controller is used for the closed-loop control of the speed of the DC motor, the present invention proposes a DC motor speed PID control system and its control method

Method used

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  • PID control system for DC motor speed and control method thereof
  • PID control system for DC motor speed and control method thereof
  • PID control system for DC motor speed and control method thereof

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Embodiment Construction

[0019] Such as figure 1 As shown, a DC motor speed PID control system includes: a controller 110, a power drive unit 120, a controlled object 130, and a speed detection sensor 140. The controller 110 includes a comparator 111, a proportional device 112, and an integral The controlled object 130 includes a DC motor 131 and a mechanical load 132; the comparator 111 receives the speed command signal, and the output terminal of the comparator 111 is connected to the input terminals of the proportioner 112 and the integrator 113. The proportioner 112 and The output end of the integrator 113 is connected to the input end of the adder 114, the output end of the adder 114 is connected to the input end of the power drive unit 120, the output end of the power drive unit 120 is connected to the input end of the DC motor 131, and the output end of the DC motor 131 Connected to the input terminal of the mechanical load 132, the mechanical load 132 outputs a speed output signal one way, and th...

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Abstract

The invention discloses a system and a method for controlling the speed PID of a direct current (DC) motor, belonging to the field of DC motor control. The structure comprises a controller, a power drive unit, a controlled object and a speed detection sensor, wherein, the controller comprises a comparator, a proportioner, an integrator and an adder; the controlled object comprises a DC motor and a mechanical load; the control method of the control system comprises the steps as follows: an equivalent damping parameter K and an equivalent inertia parameter A of the controlled object are recognized; furthermore, an proportion control parameter KP and an integral control parameter KI of the controller are adjusted. During the debugging process of the control system, the controller parameters can be adjusted effectively, the blindness of adjusting the PID controller parameter is avoided so that the time and energy are saved, and the best speed control effect can be obtained.

Description

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

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02P6/06H02P6/08G05B13/00H02P7/18
CPCY02P80/10
Inventor 曾文火邵福
Owner 常熟紫金知识产权服务有限公司
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