Vibration control device and method for hinged plate based on multi-laser displacement sensor

Abstract

The invention discloses a hinge plate vibration control device based on multiple laser displacement sensors and a method. The device comprises a flexible hinge plate. The flexible hinge plate is formed by connecting two flexible plates through a hinge. One end of the flexible hinge plate is fixed through a mechanical clamping device. Three laser displacement sensors are used for measuring and are arranged on one side of the flexible hinge plate. Pieces of piezoelectric ceramic are used as drives. Optimization allocation is carried out on the pasting position of the laser displacement sensors and the piezoelectric drives. The bending mode and the twisting mode of the flexible hinge plate are decoupled in detection and drive control. According to the method, the vibration information of decoupled bending and twisting modes is acquired according to measurement signals of the laser displacement sensors; a vibration active control algorithm is operated to acquire controlled quantity; and piezoelectric drive voltage amplifiers are used to respectively drive bending and twisting mode drives to control bending and twisting multimodal vibration.

Description

technical field [0001] The invention relates to the field of vibration control of a large flexible hinged plate structure, in particular to a hinged plate vibration control device and method based on a multi-laser displacement sensor. Background technique [0002] With the continuous advancement of the modernization process of human society, aerospace technology is changing with each passing day in the fierce competition among countries all over the world. In the 1950s, the United States, Russia and other major aerospace powers launched deep space exploration missions. Since the beginning of the new century, countries around the world have regarded the development of the aerospace industry as one of the symbols of national comprehensive strength. Aerospace vehicles have flexible structures such as solar panels. As they are endowed with more and more important functions, the composition of such flexible structures is constantly becoming more and more complicated, and the size...

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Problems solved by technology

[0006] (2) Piezoelectric ceramics, accelerometers and gyroscopes are mainly used for contact measurement, which will have a load effect on the flexible board, that is, the sensor must be connected with the flexible board during measurement, which will inevitably affect the overall system under test. The state brings influence, thereby affecting the measurement and control accuracy;

[0007] (3) The vibration of the space sailboard includes bending modal vibration and torsional modal vibration. The existing technology mainly focuses on the active control of bending modal vibration. The decoupling problem has not been effectively solved

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