Fast reflecting mirror auto-disturbances rejection control system based on fuzzy proportion integration differentiation (PID)

A technology of active disturbance rejection control and fuzzy control, applied in general control systems, control/regulation systems, adaptive control, etc., can solve the problems of inaccurate transfer functions of fast mirrors, unknown disturbance signal effects of fast mirrors, etc. The effect of good time domain characteristics and good control effect

Inactive Publication Date: 2016-06-29
INST OF OPTICS & ELECTRONICS - CHINESE ACAD OF SCI
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Problems solved by technology

[0006] The technical problem to be solved by the present invention is to provide a fuzzy PID-based active disturbance rejection control system for fast mirrors for the problems that the transfer function of the fast mirror is not accurate enough and the fast mirror will be affected by unknown disturbance signals

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  • Fast reflecting mirror auto-disturbances rejection control system based on fuzzy proportion integration differentiation (PID)
  • Fast reflecting mirror auto-disturbances rejection control system based on fuzzy proportion integration differentiation (PID)
  • Fast reflecting mirror auto-disturbances rejection control system based on fuzzy proportion integration differentiation (PID)

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Embodiment Construction

[0019] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0020] The structural principle diagram of the active disturbance rejection control system based on fuzzy PID proposed by the present invention is as follows figure 2 As shown, it includes input module, PID module, fuzzy controller, feedforward correction module, fast mirror system, grating micrometer. Among them, the fuzzy controller performs fuzzy processing on the deviation e between the input fast mirror's actual deflection angle and the set deflection angle and the deviation change rate de / dt, turning the two precise quantities into fuzzy quantities, and then according to the fuzzy control rules Carry out fuzzy decision-making to obtain the fuzzy control quantity that needs to be output, and finally perform defuzzification processing and tuning to obtain accurate output control quantities KP, KI, KD, and input these control parameters to ...

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Abstract

The invention provides an active disturbance rejection control system for fast mirrors based on fuzzy PID, which includes an input module, a traditional PID module, a fuzzy controller, a feedforward correction module, a fast mirror system, a grating micrometer and an output module. The control system performs fuzzy processing on the system deviation and deviation change rate through the set fuzzy control rules, and then sets three control parameters of the PID controller, and applies the three control parameters to the forward channel of the fast mirror control system respectively. In the network and the feedforward correction link, they are used to control the movement of the fast mirror and compensate the interference of the disturbance signal to the control system. Because this control method does not rely on the precise mathematical model of the fast mirror and does not require the type of the disturbance signal to be known, it has a wider range of application.

Description

technical field [0001] The invention belongs to the field of precision mechanical control, and in particular relates to a fuzzy PID-based self-disturbance rejection control system for fast mirrors. Background technique [0002] The fast mirror is an important part in the optical system, and it has outstanding characteristics such as fast response speed, high bandwidth, and compact structure. Because of its small deflection angle, it usually forms a compound axis tracking system together with a tracking frame with a large rotation angle to capture and track moving targets. [0003] Due to the complexity of the working environment, the fast mirror system is inevitably affected by various interference factors. These interference signals will cause the system to fail to produce accurate output, or even cause distortion of the output signal. Therefore, when designing the fast mirror control system, the influence of the disturbance signal on the system performance should be fully...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05B11/42G05B13/02G05D3/12
CPCG05B11/42G05B13/0275G05D3/12
Inventor 艾志伟谭毅朱能兵
Owner INST OF OPTICS & ELECTRONICS - CHINESE ACAD OF SCI
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