A Vibration Suppression Method of Tilted Mirror Based on Improved Repeated Controller

A repetitive controller, vibration suppression technology, applied in the direction of electric controllers, etc., can solve problems affecting system performance and other issues

Active Publication Date: 2021-05-14
INST OF OPTICS & ELECTRONICS - CHINESE ACAD OF SCI
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Problems solved by technology

[0003] Aiming at the problem that the vibration of the mechanical structure of the large telescope affects the performance of the system, and this vibration cannot be compensated by the classical adaptive optics control system, this paper proposes an improved repetitive controller to further improve the disturbance suppression ability of the system

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  • A Vibration Suppression Method of Tilted Mirror Based on Improved Repeated Controller
  • A Vibration Suppression Method of Tilted Mirror Based on Improved Repeated Controller
  • A Vibration Suppression Method of Tilted Mirror Based on Improved Repeated Controller

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Embodiment Construction

[0031] The specific implementation manners of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0032] as attached figure 1 as shown, figure 1 It is a schematic diagram of a classic feedback control experiment platform, including a laser 1, a tilting mirror 2, a voice coil motor 3, a driver 4, a controller 5, and a position sensor PSD 6.

[0033] as attached image 3 Shown is a control block diagram of a tilting mirror vibration suppression method based on an improved repetitive controller, which includes a CCD position loop and a repetitive controller. The specific implementation steps of using the device to improve system performance are as follows:

[0034] Step (1): Build an experimental platform under the classic feedback control loop, use PSD (position sensor) to detect the deviation of the target and feed it back to the control loop;

[0035] Step (2): Using PSD to design the position controller C(z -1 ), to com...

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Abstract

The invention discloses a vibration suppression method of a tilted mirror based on an improved repetitive controller, which is inserted into a tilted mirror system to suppress the vibration. As a learning strategy, repetitive control can enhance error attenuation and achieve optimal correction to system disturbances when the frequency of system disturbances is known. Aiming at the problem that the traditional repetitive control method will amplify the disturbance at non-periodic frequency, the present invention proposes an improved repetitive controller to optimize the control algorithm, which will not cause other disturbances on the basis of improving the system disturbance suppression ability. Amplification of frequency disturbances. In addition, the method only needs one image sensor, and the cost is low. At the same time, its structure is simple, independent of the model, easy to operate and implement, and does not cause a compromise between vibration suppression and noise transmission.

Description

technical field [0001] The invention belongs to the field of photoelectric tracking and control, and in particular relates to a method for suppressing vibration of a tilting mirror based on an improved repetitive controller, which is mainly used to improve the disturbance suppression capability of a photoelectric tracking system such as an astronomical telescope system, and improve the closed-loop performance of the system. Background technique [0002] One of the important technical difficulties that need to be overcome in the current astronomical telescope system is to suppress the vibration so as to obtain high-definition imaging. As a learning strategy, repetitive control can achieve optimal correction when the system disturbance frequency is known without increasing the number of sensors and without depending on the model, and effectively improve the disturbance suppression ability of the system. Nonetheless, conventional repetitive control amplifies disturbances at non...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G05B11/32
CPCG05B11/32
Inventor 牛帅旭唐涛亓波包启亮曹雷蒋晶赵志强杨涛
Owner INST OF OPTICS & ELECTRONICS - CHINESE ACAD OF SCI
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