Device for measuring and controlling coupled vibrations of multi-flexibility cantilever beam based on single-axis air flotation table and method thereof

Abstract

The invention discloses a device for measuring and controlling coupled vibrations of multi-flexibility cantilever beam based on single-axis air flotation table, and a method thereof. The device comprises a cantilever beam body, a supporting driving component and controlling components; the cantilever body comprises four cantilever beams, which are all flexibility beams and are all provided with a piezoelectric ceramic sensor, a piezoelectric ceramic driver, and an acceleration sensor. The supporting driving component comprises the single-axis air flotation table, an air supply loop, a servo motor, and a servo motor support. The four cantilever beams are arranged on a supporting rotary table of the single-axis air flotation table through a support, the air supply loop is connected to the single-axis air flotation table, the servo motor support is fixedly connected to the supporting rotary table of the single-axis air flotation table, and the servo motor is fixedly connected to the servo motor support. The controlling components are connected to the piezoelectric ceramic sensor, the piezoelectric ceramic driver, the acceleration sensor, the air supply loop, and the servo motor respectively. The device for measuring and controlling coupled vibrations of multi-flexibility cantilever beam based on single-axis air flotation table is capable of detecting in real time the flexible vibration mode of the flexibility cantilever beam and inflicting control on the flexible vibration mode.

Description

technical field [0001] The invention relates to a vibration detection device and method, in particular to a multi-flexible cantilever beam coupled vibration measurement and control device and method based on a single-axis air bearing table, belonging to the field of coupled vibration detection and control. Background technique [0002] In recent years, the spacecraft structure is developing rapidly towards a trend of large-scale, low stiffness and flexibility. The light weight of the flexible structure can increase the weight of the payload and improve the carrying efficiency; the large structure can increase the space structure function, making the design and manufacture of the spacecraft more flexible. However, at the same time, the energy demand of the spacecraft is also increasing, and the more solar panels are needed, the area of ​​the solar panels is also increasing. And solar panel structures are often made of lightweight materials to reduce structural weight and thu...

AI Technical Summary

Problems solved by technology

If no proper control method is adopted to suppress the vibration of solar panels, it will bring many problems to the spacecraft’s in-orbit operation, such as affecting the attitude stability and pointing accuracy of the spacecraft, shortening the life of the spacecraft, and even causing solar Destruction of the sail structure, disabling the spacecraft, etc.

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