Simulation and experimental verification of active increasing time delays compensation

摘要

The research and application of structural control in civil engineering have made a great progress during the development of last several decades. Time delay phenomenon that arises unavoidable regarding active control, are still the focus of study of structure control. Time delay may not only degrade the performance of the control system, in severe case will cause system instability, control divergence. In the view of this practical problem, the following were studied: when actual time delay of the actuator is over maximum allowed time delay, conventional time delay compensation method is out of effect, a new active increase time delay compensation method based on velocity feedback is proposed. Combined with huge amount of simulation results, qualitative combined with quantitative, parameters influence rule of active control algorithm is analyzed in detail. Take monolayer shear-type frame structure as control target, the experimental study of based on displacement feedback active increasing time delays compensation is conducted. The numerical simulation and experimental results demonstrated that the presented time delay compensation control algorithm is effective.