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An Active Vibration Control Method for Wrinkled Thin Films Based on In-Plane Regulation

An active vibration control and wrinkle technology, applied in the direction of adaptive control, general control system, control/regulation system, etc., can solve the problems of affecting the dynamic performance of the structure, changing the stress distribution of the film, wiring and installation difficulties, etc., to improve anti-disturbance capability, out-of-plane vibration suppression, and easy-to-achieve effects

Active Publication Date: 2021-04-30
BAOJI UNIV OF ARTS & SCI +1
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Problems solved by technology

Not only is wiring and installation difficult, but the actuator is directly pasted on the surface of the film, which will also change the stress distribution of the film and affect the dynamic performance of the structure

Method used

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  • An Active Vibration Control Method for Wrinkled Thin Films Based on In-Plane Regulation
  • An Active Vibration Control Method for Wrinkled Thin Films Based on In-Plane Regulation
  • An Active Vibration Control Method for Wrinkled Thin Films Based on In-Plane Regulation

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Embodiment Construction

[0112] The technical solutions of the present invention will be described in detail with reference to the drawings and embodiments, but the present invention is not limited to the following implementation situations.

[0113] The active vibration control method of wrinkled film based on in-plane regulation of the present invention can add two groups of voice coil motor drive modules on the basis of the static experimental device, which are used to adjust the displacement in the X direction and the Y direction respectively, through the voice coil motor The slider is stretched to adjust the displacement of the cable, and the tension on the cable is changed. The tension sensor fixed on the slider of the voice coil motor is used to monitor the tension in real time, and the grating ruler outputs and feeds back the displacement in real time. A knocking device is installed on the back of the film, and the out-of-plane disturbance is simulated by the impact method, and the out-of-plane...

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Abstract

The invention relates to an active vibration control method for wrinkled membranes based on in-plane regulation. The dynamic model of wrinkled membranes is established mainly by analyzing the influence of wrinkle shape on the dynamic characteristics of the membrane structure; Based on the basic space vector, the dynamic model of the wrinkled membrane under different loads is established; according to the contribution of each order mode to the vibration deformation of the system, the dynamic model is condensed to establish a control-oriented dynamic model of the membrane structure; the model is adopted Referring to the adaptive controller, combined with the PID controller, a PID-MRAC control method based on in-plane regulation and multi-model switching is proposed. The method of the present invention does not need to paste actuators on the surface of the film, and can effectively suppress the out-of-plane vibration of the film. , will not affect the characteristics of the film itself, ensure the stability of the film structure, and shorten the vibration time by about 39.7% compared with the traditional PID control method.

Description

technical field [0001] The invention belongs to the technical field of control engineering, and in particular relates to an active vibration control method of a wrinkled membrane based on in-plane regulation, which is used for simpler and more effective suppression of membrane vibration. Background technique [0002] The appearance of wrinkles significantly reduces the surface accuracy of the membrane, and also has a certain impact on the dynamic characteristics of the membrane structure. In the space environment without air damping, once the membrane structure is disturbed by the outside, the vibration of the membrane surface will be difficult to stop. The flexibility characteristics bring certain difficulties to ensure the stability and controllability on the orbit, so the regulation of the wrinkled film is facing severe challenges. Scholars at home and abroad have carried out research. At present, there are mainly two types of dynamic regulation methods. [0003] One is ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G05B13/04
CPCG05B13/042
Inventor 刘明君黄进张卫亮
Owner BAOJI UNIV OF ARTS & SCI
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