关键词: 多自由度共振性负载, 液压动力机构建模, 振动台, 主动控制, 主动质量阻尼

Abstract: The experimental system for active mass damper (AMD) is built. The modeling and analysis of hydraulic power mechanism, with multi-degree-of-freedom resonant load, are achieved. Focusing on the problem that the frequency band of shaking table hydraulic system cannot meet the requirement of experiment, the controller is designed by using three-state feedback and three-state feedforward control methods, which extends the acceleration frequency band of shaking table and improves the stability of system. The effectiveness of controllers is experimentally validated. It is concluded that the system can reach the expected response frequency band and stability margins.

Key words: Active control, Active mass damper, Hydraulic power mechanism modeling, Multi-degree-of-freedom resonant load, Shaking table