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In-plane-control-based active vibration control method for wrinkled film

A technology of active vibration control and pleats, applied in the direction of adaptive control, general control system, control/regulation system, etc., can solve problems such as wiring and installation difficulties, affecting structural dynamic performance, changing film stress distribution, etc.

Active Publication Date: 2018-11-27
BAOJI UNIV OF ARTS & SCI +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

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

Method used

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  • In-plane-control-based active vibration control method for wrinkled film
  • In-plane-control-based active vibration control method for wrinkled film
  • In-plane-control-based active vibration control method for wrinkled film

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Embodiment Construction

[0112] The technical solution of the present invention is described in detail in conjunction with the accompanying 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...

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Abstract

The invention relates to an in-plane-control-based active vibration control method for a wrinkled film. On the basis of the analysis on the influence on dynamic characteristics of a film structure bya wrinkle form, a dynamic model of a wrinkled film is established; according to a modal superposition method, a space vector based on a natural mode of vibration is obtained and dynamic models of thewrinkled film under different loads are established; condensation polymerization is carried out on the dynamic models according to contributions to system vibration deformation by all orders of modes,so that a control-oriented film structural dynamic model is established; and with a model reference adaptive controller, a PID-MRAC control method based on in-plane-control multi-model switching is proposed. According to the method provided by the invention, no actuator needs to be pasted on the surface of the film; the out-of-plane vibration of the film is suppressed effectively; the characteristics of the film are not affected; the high stability of the film structure is ensured; and compared with the conventional PID control method, the in-plane-control-based active vibration control method enables the vibration time to be shortened by about 39.7%.

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 Applications(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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