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Serial PI(Proportional-Integral)-PI controller in quick tilting mirror control system

A PI-PI, control system technology, applied in the field of deformable mirror system, can solve problems such as multi-noise, achieve the effect of simple and reliable system, good stability and robustness, and improve low-frequency performance

Inactive Publication Date: 2012-03-21
INST OF OPTICS & ELECTRONICS - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In addition, high bandwidth tends to introduce more noise

Method used

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  • Serial PI(Proportional-Integral)-PI controller in quick tilting mirror control system
  • Serial PI(Proportional-Integral)-PI controller in quick tilting mirror control system
  • Serial PI(Proportional-Integral)-PI controller in quick tilting mirror control system

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Embodiment Construction

[0029] Examples of the present invention are described below. But following embodiment only limits to explain the present invention, and protection scope of the present invention should comprise the whole content of claim, and promptly can realize the whole content of claim of the present invention to those skilled in the art through following embodiment.

[0030] (1) Design method of the embodiment of the present invention

[0031] Location Loop Design

[0032] The literature (large high performance fast steering mirrors with fpga-embedded controls.felix E.morgan.SPIE Vol.7466) has given a fast tilting mirror position control method and implementation. A high bandwidth position loop can be considered as Go(s)≈1. In this way, when designing the tracking loop, the control object can be regarded as a simple delay link e-τs.

[0033] PI-PI controller design

[0034] After the position closed loop, the fast steering mirror (FSM) object can be regarded as a simple delay link. T...

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Abstract

The invention discloses a serial PI(Proportional-Integral)-PI controller in a quick tilting mirror control system, and the controller is composed of two serial PI controllers, wherein each controller is composed of two real-number zeros and two integrators. The parameter setting standard of the controller is characterized in that a controller gain is maximized under the condition of satisfying settable phase allowance and amplitude allowance; according to the standard, a parameter setting result can be obtained. Compared with the traditional PI controller, the controlled has the following advantage: experiments verify that the controller can be used for improving the system control performance on the premise that the tracking bandwidth is increased.

Description

technical field [0001] The present invention relates to the field of tracking control, in particular to a serial PI-PI controller in a fast tilting mirror control system, which is used to realize high-precision control of the beam position. This controller is also applicable to other linear drive control systems, such as Deformable mirror system. Background technique [0002] Fast tilt mirrors are widely used in free-space optical communication, adaptive optics, and boresight stabilization, and are a precise beam correction technology. The fast-tilt mirror control system generally uses the line-of-sight error provided by the tracking sensor (CCD, PSD, four-quadrant, etc.) to perform closed-loop. In recent years, a double-loop control structure combining position closed-loop and tracking loop has been realized at home and abroad. The method of the double-loop control structure mainly utilizes the high-bandwidth position closed-loop loop to eliminate the nonlinear influence,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05B11/42
Inventor 唐涛任戈黄永梅傅承毓蒋晶包启亮
Owner INST OF OPTICS & ELECTRONICS - CHINESE ACAD OF SCI