Vertical Vibration Isolation Control for Power Plant via Magneto-rheological Mounts and Relevant Experiment
LI Rui1,2, CHEN Wei-min2, ZHENG Tai-xiong1, LIAO Chang-rong2
1. Key Laboratory of Network control & Intelligent Instrument of Ministry of Education, Chongqing University of Posts and Telecommunications, Chongqing 400065,China;2. Key Laboratory of Optoelectronic Technology & Systems of the Education Ministry of China, Chongqing University, Chongqing 400044, China
A power plant mount system with controllable damping characteristics in a broader frequency range is very important for active isolation. The operation principle and damping characteristics of a magneto-rheological (MR) semi-active mount in squeeze mode are analyzed. A vertical vibration isolation model of a power plant is proposed. A fuzzy adaptive control (FAC) system utilizing a scale factor self-turning algorithm is designed to decrease the vertical excitation force of the power plant in different operation states. A revised skyhook control strategy is also adopted to dissipating the energy by restraining the vibration of the power plant. An experimental isolation system of one real power plant is presented. The isolation test in different conditions is carried out. Experimental results show that the MR mount system can decrease the absolute force transmissibility ratio to 25%, which is better than that of rubber mounts at lower rotating speed. Test confirms that FAC,which considers vibration transmissibility and excitation frequency, can provide better performance in reducing the total vertical transmitted force than skyhook controller, which is used on vibration isolation by restraining the vibration energy of the power plant .
李锐;陈伟民;郑太雄;廖昌荣 . 基于磁流变悬置的动力装置垂向隔振控制与试验研究[J]. , 2012, 31(10): 171-176.
LI Rui;CHEN Wei-min;ZHENG Tai-xiong;LIAO Chang-rong.
Vertical Vibration Isolation Control for Power Plant via Magneto-rheological Mounts and Relevant Experiment. , 2012, 31(10): 171-176.