主被动混合隔振中的功率放大器设计及实验

Design and experiment of power amplifier in passive-active vibration isolation

磁悬浮主被动混合隔振能有效控制机械设备的宽频振动和低频线谱振动。功率放大器作为该系统的功率变换装置,其性能直接影响主被动混合隔振效果。通过介绍PWM开关功率放大器的基本原理,分析了设计参数对其性能的影响。针对主被动混合隔振需求,对开关功率放大器进行了参数设计。仿真和实验结果表明:该功率放大器参数设计合理,能满足主被动混合隔振需求。

Passive-active hybrid vibration isolation system using maglev actuator can effectively control the broadband and low frequency line spectrum vibration of machinery.As the power converting device of the system,power amplifier directly influences the performance of hybrid isolation system.The basic principle of amplifier is described and the influences of the main design parameters on the performance of amplifier are analyzed.The parameters of amplifier are designed according to the needs of passive-active hybrid vibration.Simulation and experiment results show that the parameters are designed reasonably,and the power amplifier meets the needs of the passive-active hybrid vibration.