Abstract：To overcome the poor control precision of iterative learning control (ILC) which is generally used in earthquake simulation test, an adaptive control method is proposed for earthquake simulation. Adaptive control can obtain high simulation precision for seismic wave, by continuously identifying the transfer function of shaking table to overcome the time-variation of hydraulic system. On this basis, the test method is improved by analyzing the disadvantage of pre-test step, so earthquake simulation test complete without conventional pre-test step, and the correlation coefficient of reference signal and control signal in time domain at a high level. The several typical earthquake wave experimental results which are got in Zhejiang University shaking table indicate that the improved test method can obtain the first frame correlation coefficient of reference signal and control signal in time domain above 75% without pre-test step, while the experimental time is shorten; after several frames of earthquake simulation test , the correlation coefficient of reference signal and control signal in time domain can reach 95% through identifying the transfer function continuously.
2012, Vol. 31 
