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LIU Renhong YU Jiebing WANG Guangyuan KANG Ling CHEN Jiaxin ZHANG Junsong LIU Lei HUANG Liangsheng 《原子能科学技术》1959,54(10):1940-1946
A parallel 6-DOF vibration isolation platform was built with piezoelectric ceramic actuators. And the NI Compact-RIO real-time control system and Fx-LMS adaptive filtering control algorithm were used for active vibration control. The secondary channel identification method and active control algorithm were simulated, and the active vibration control system was built for experimental verification. The simulation and experimental results show that the designed active vibration control system has a good control effect on the low-frequency micro-vibration at the range of 7 Hz to 50 Hz. 相似文献
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滤波x最小均方差(filtered-x least mean square,简称Fx-LMS)算法作为振动控制领域常用的自适应控制算法,其固定步长因子不能同时满足收敛速度和稳态误差的双重要求。为了改善Fx-LMS算法实施效果,提出一种基于反余切函数的滤波x变步长最小均方差(filtered x variable step size least mean square,简称Fx-VSSLMS)算法。首先,归纳了7种常规VSSLMS算法的步长更新公式,并按照其迭代特点予以性能分析与分类对比;其次,以压电柔性悬臂梁振动主动控制为算法验证目标,采用多体动力学软件Adams和Simulink进行联合仿真,表明所提的Fx-VSSLMS算法在振动控制中的有效性;最后,通过分析对比多种Fx-VSSLMS算法在不同噪声环境下的抑振效果,验证了所提出控制算法对噪声干扰的良好鲁棒性。 相似文献
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