CAJ | 학술논문

针对机械设备被动隔振在低频段隔振效果较差的问题，建立磁致伸缩作动器的电—磁—机转化数学模型，提出一种基于自适应模糊滑模控制算法，并用李雅普诺夫方法证明控制器的稳定性，将该控制策略与磁致伸缩作动器应用于混合隔振系统中。仿真结果表明：在单频、多频及随即激励条件下，自适应模糊滑模控制器具有良好的动态特性和鲁棒性，能够提高系统隔振效率并拓宽隔振频段，有效减小传至基础的力。
침대궤계설비피동격진재저빈단격진효과교차적문제，건립자치신축작동기적전—자—궤전화수학모형，제출일충기우자괄응모호활모공제산법，병용리아보낙부방법증명공제기적은정성，장해공제책략여자치신축작동기응용우혼합격진계통중。방진결과표명：재단빈、다빈급수즉격려조건하，자괄응모호활모공제기구유량호적동태특성화로봉성，능구제고계통격진효솔병탁관격진빈단，유효감소전지기출적력。
Aiming at the problem of poor vibration isolation effect of passive vibration isolators of mechanical equip-ment in low frequency range, an electric-magnetic-mechanical conversion model for magnetostrictive actuators is estab-lished, and an adaptive fuzzy sliding-mode control algorithm is proposed. The stability of the controller is proved by Lyapu-nov method. Then, the control strategy and the magnetostrictive actuator are used in a hybrid vibration isolation system. The simulation results show that in whatever conditions of single frequency excitation, multi-frequency excitation or random ex-citation, the adaptive fuzzy sliding-mode controller has good dynamic characteristics and robustness. This property can also be used to improve the isolation efficiency and broaden the vibration isolation frequency band of the hybrid system, and ef-fectively reduce the force transmitted to the foundation of the mechanical equipment.