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针对振动主动控制中的共振及溢出现象,提出了采用交结构控制的构想;再根据变结构控制的基本理论,提出了共振及溢出控制的变结构控制原理、算法;并以悬臂梁为模型通过仿真验证了所提出的变结构控制策略对共振及溢出控制的有效性。仿真结果表明:对于主动振动控制中的共振及溢出现象,加速度反馈比阻尼反馈更为有效;在对共振及溢出采用变结构控制时,控制切换函数或区间的选取对控制效果的优、劣非常重要,有待于进一步探讨。
Aiming at the resonance and spillover in active vibration control, a concept of cross structure control is proposed. Based on the basic theory of variable structure control, a variable structure control principle and algorithm of resonance and spill control are proposed. By using cantilever beam as a model The simulation verifies the effectiveness of the proposed variable structure control strategy for resonance and overflow control. The simulation results show that the acceleration feedback is more effective than the damping feedback for the resonance and spillover in the active vibration control. When the variable structure control is used for the resonance and spillover, the selection of the control switching function or interval is superior to the control effect Important, to be further explored.