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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 a fast reflecting mirror auto-disturbances rejection control system based on fuzzy proportion integration differentiation (PID).The fast reflecting mirror auto-disturbances rejection control system comprises an input module, a conventional PID module, a fuzzy controller, a feed-forward correction module, a fast reflecting mirror system, a grating amesdial and an output module.The control module performs fuzzy processing on system deviation and deviation change rate through set fuzzy control rules and sets three control parameters of a PID controller, and the three control parameters act on a forward path and feed-forward correction links of the fast reflecting mirror control system respectively and are respectively used for controlling interference to the control system caused by motion and compensation disturbing signals of a fast reflecting mirror.Due to the fact that a control method does not rely on a precise mathematic mode of the fast reflecting mirror and does not require types of known disturbing signals, the control method has a wide applied range.

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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