Simulated space windsurf board torsional vibration control device and method based on angular rate gyroscope

Abstract

The invention discloses a simulating space sailboard torsional vibration control device and a method based on an angular rate gyro. In the device, the angular rate gyro is arranged in the middle position along the longitudinal direction of the free end of a flexible cantilever plate and is used as a sensor for detecting the vibration of a torsional mode; a plurality of piezoelectric ceramics sheets are anti-symmetrically stuck on the double surfaces in the middle position along the longitudinal direction of the free end; the polarities of the double surfaces of the piezoelectric ceramics sheets are the same and are connected in parallel to form a torsional mode driver. A plurality of piezoelectric ceramics sheets are anti-symmetrically stuck on the double surfaces near the fixing end of the cantilevers plate and are used as a sensor and a driver for a bending mode. The method realizes the bending of the flexible cantilever plate and the decoupling of the torsional vibration mode on detecting and drive control as well as realizes the goal of drive restraining to the vibration of the flexible plate by utilizing the mounting mode of the angular rate gyro and the optimal allocation of the piezoelectric ceramics sheets. The method mainly realizes the drive restraining to the vibration of the torsional mode of the flexible plate based on an angular rate gyro sensor and a piezoelectric torsional mode driver.

Description

technical field [0001] The present invention relates to vibration control of large-scale flexible structures, in particular to an active control device and method for torsional vibration of a space sailboard structure, and specifically provides a cantilever flexible board structure for simulating flexible space sailboards. The optimized configuration of the rate gyro sensor and the piezoelectric driver realizes the active control device and method of torsional mode vibration. Background technique [0002] Large-scale, low rigidity and flexibility are an important development trend of spacecraft structure. With the rapid development of aerospace technology, new requirements are put forward for the performance of space structure systems, and the size of space sailboards is getting larger and larger. For example, the RAE satellite is equipped with four large antennas with a length of 228.8m. In the space energy plan of outer solar energy, it is required to install a huge and t...

AI Technical Summary

Problems solved by technology

The torsional mode driver composed of multiple piezoelectric sheets must have high precision for pasting, and the parameters of each piezoelectric ceramic sheet are required to be consistent. This requires precision and consistency for piezoelectric sheets and pasting, which is inconvenient for installation and application.

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