Multi-degree of freedom micro-vibrating environment simulating method

Abstract

The invention provides a multi-degree of freedom micro-vibrating environment simulating method. The method includes the following steps: forecasting micro-vibrating environment conditions; identifyinga multiple-input-multiple-output system transfer function matrix; and conducting multi-degree of freedom micro-vibrating signal simulation control. The method herein conducts closed-loop control on the multiple-input-multiple-output system based on a multi-degree of freedom reference signal, the transfer function of the system and a multi-degree of freedom response signal that are configured, drives a micro-vibrating excitation system to move, and simulates the multi-degree of freedom micro-vibrating environment. According to the invention, the method herein has excellent universality and high efficiency, and better addresses the technical problems of micro-vibrating tests.

Description

technical field

[0001] The invention belongs to the field of spacecraft mechanics environment test, and in particular relates to a multi-degree-of-freedom micro-vibration environment simulation method. Background technique

[0002] At present, the simulation of micro-vibration environment mainly adopts the method of installing disturbing source equipment, installing vibration exciter equipment and using excitation system. The method of installing the disturbing source equipment is to generate a real micro-vibration environment by making the disturbing source equipment work normally; the method of installing the vibrator is to simulate the micro-vibration environment by using the exciter to generate an excitation signal similar to the real disturbance source; In a systematic approach, a micro-vibration excitation system is used to generate a micro-vibration signal to simulate a micro-vibration environment. For example, the micro-vibration environment simulation system based ...

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