A nonlinear vibration control device that realizes the active and passive integration of the whole star self-supply

Abstract

The invention relates to an apparatus for realizing whole-satellite self-energy-supply active and passive integrated nonlinear vibration control. The apparatus comprises a conical shell adapter, a damping material, a cubic nonlinear spring, a mass block, a guide rod, an energy gatherer, a lead wire, an actuator, a controller and a sensor, wherein the damping material, the cubic nonlinear spring and the mass block form a nonlinear energy sink, i.e., an NES; one end of the energy gatherer is fixed at the inner side of the upper end surface of the conical shell adapter, the other end is fixed on the mass block, and thus the NES and the energy gatherer are combined together; the two ends of the guide rod are fixed to the upper end surface and the lower end surface of the conical shell adapter, for constraining the vibration direction of the mass block; and the actuator is in contact with the upper end surface and the lower end surface of the conical shell adapter and is connected with the energy gatherer through the lead wire, and the controller converts feedback signals of a sensor installed at the upper end of the conical shell adapter into control signals for transmitting to the actuator. The problem of energy restrictions of a spacecraft in actual environment is solved to a quite large degree, and the actual application significance is great.

Description

technical field [0001] The invention relates to an active and passive integrated nonlinear vibration control device for realizing self-supply of the whole star. Background technique [0002] In the field of aerospace engineering, satellites will be subjected to different forms of loads during launch, including periodic, random and transient excitations. Based on the entire satellite vibration isolation technology, the predecessors added a vibration isolation device to the satellite-aircraft connection adapter (PAF) to reduce the damage of the load to the structure to a certain extent. [0003] In recent years, the technology of using nonlinear energy sink (NES) to realize mechanism vibration control has been studied by many scholars at home and abroad. NES is mainly composed of cubic nonlinear stiffness, damping material and mass block, which can realize the unidirectional and irreversible transfer of vibration energy from the main system to the nonlinear part, and achieve ...

AI Technical Summary

Problems solved by technology

However, in practical applications, active and passive integrated control will be limited by the energy of the actual engineering environment, especially the environment in which the spacecraft itself is located.

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