振动主动控制系统降级工作模式研究

Subjects: Mechanics >> Applied Mechanics submitted time 2023-03-20 Cooperative journals: 《应用力学学报》

梁昆 李明强 王国胜 苑博

Abstract： The active vibration control system is an electromechanical integrated system which can reducethe vibration level of the platform by obtaining the vibration sensor signal and driving the actuator outputforce.The stability of the active vibration control system directly affects the experience of using the plat-form which obtains harsh vibrations.'The system is highly sensitive to component reliability when the sys-tem contains lots of hardware. In order to improve the functional reliability of the system without changingthe hardware , this paper proposes two system degradation modes of system control strategies and analyzestheir reliability.Based on the system degradation modes and switch methods , different levels of degradationmodes are designed accordig to the different number of hardware faults.According to the system controlparameters under different degradation modes, the optimal combination design of the actuator is proposed.And the optimal high-dimensional matrix of system model under different degradation modes is obtained.Finally , in the laboratory , the degradation mode of the actuator is experimentally verified in the active vi-bration control system test platform. By disconnecting the power supply of the actuator , the system workscorrectly for the vibration reduce function.

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