Adaptive inverse control of time waveform replication for electrohydraulic shaking table

作者：Shen, Gang^*; Zheng, Shu-Tao; Ye, Zheng-Mao; Huang, Qi-Tao; Cong, Da-Cheng; Han, Jun-Wei

来源：Journal of Vibration and Control, 2011, 17(11): 1611-1633.

DOI：10.1177/1077546310380431

• Adaptive inverse control
• electrohydraulic shaking table
• filtered-x least-mean-squares algorithm
• time waveform replication
• system identification

A combined control strategy with an adaptive inverse control (AIC) and an inverse frequency response IFRF) equalization technique is proposed for the electrohydraulic shaking table (EST) system. The control purpose is to improve the accuracy of time waveform replication. In contrast to the iterative compensation through repetitive excitations control approach of industrial EST controllers, the proposed control strategy utilizes an IFRF of the EST system for extending the EST system frequency bandwidth and obtaining asymptotic reference tracking, and employs a variable tap-length filtered-x least-mean-squares algorithm to adaptively tune the time-domain drive signal and further improve the position and acceleration tracking performance of the EST system. Thus, the proposed combined control strategy is designed to combine the merits of IFRF and AIC. The procedures of the proposed control strategy are programmed in MATLAB/Simulink, and then compiled to a real-time PC with Microsoft Visual Studio. NET for implementation. The simulated and experimental results show that this control strategy achieves satisfactory position and acceleration waveform replication accuracy.

• 出版日期2011-10
• 单位机器人技术与系统国家重点实验室; 哈尔滨工业大学