【摘要】 文章针对浮筏隔振系统低频线谱噪声,设计了基于x-LMS算法的自适应前馈控制律的主动吸振控制方案,采用导纳综合方法仿真分析了浮筏隔振系统在多通道主动动力吸振装置作用下的振动控制效果。仿真结果表明,带主动动力吸振器的浮筏隔振系统对低频线谱振动有着较好的控制效果。更多还原

【Abstract】 To improve the isolation performance of the conventional floating raft system, active dynamic vibration absorbers(AVAs) were applied, and an evaluation function about reducing the sum of mean square error of vibration response of four observation points which were located on the flexible foundation of floating raft system with AVAs was formatted. With this objective function and based on filtered x-LMS algorithm, the multi-channel self-adaptive feed forward law for the floating raft system with AVAs was designed and simulated. The simulation result shows that it is effective to use the floating raft system with AVAs for reducing the vibration of mechanical device at low frequency.更多还原