半主动直接输出反馈滑模模糊控制电流变阻尼器减振研究

针对多层结构电流变阻尼器减振系统运动状态难以完全实时测量、外界扰动和系统参数摄动界限难以准确估计以及阻尼器连续可调的特点，提出了半主动直接输出反馈滑模模糊控制策略．它是利用滑模运动方程稳定的Hurwitz判据选择滑模梯度参数，根据滑模到达条件和电流变阻尼器最大可控阻尼力设计输出反馈滑模模糊控制器，而可控屈服阻尼力对主结构做负功控制规则以保证主结构最佳减振．仿真分析表明，半主动滑模模糊控制电流变阻尼器减振效果明显．

Vibration Attenuation System Featuring Electro-Rheological Damper with Semi-active Static Output Feedback Fuzzy Sliding Mode Control

A semi-active static output feedback fuzzy sliding mode control strategy for the vibration attenuation was developed based on the fact that for multiple stage electro-rheological(ER) damper vibration suppression system, all state variables are hard to measure real time, the upper bounds for uncertainty external disturbance and the parameters perturbation are hard to estimate a priori, and the damping force of ER damper is controlled continuously. Sliding surface gradient parameters are chosen according to the reduced order sliding mode motion Hurwitz stability criterion. Fuzzy controller is designed in terms of the sliding mode reachable condition and the maximal damping force of ER damper. The optimal vibration attenuation of main mass is guaranteed due to the control rule that damping force only dissipates the vibrating energy of main object. The simulations results indicate that the performance of the semi-active static output feedback fuzzy sliding mode control strategy is remarkable.