一、问题的提出电液伺服振动台由于能够真实地模拟各种试验环境,因此在抗震、航天、交通、能源和科学研究等各个领域得到了越来越广泛的应用。而振动环境的描述,多数用加速度记录振动波形。因此,在环境试验中,加速度波的再现就成了最大的课题。通常的位置控制系统,已广泛地应用于材料试验机上,并取得了良好的控制效果。但它对加速度来说只是一种开环控制,加速度波形中高频波的畸变在位移波形中是很难表现出来的。所以即便是良好的位置控制,加速 First, the issue put forward Electro-hydraulic servo shaker because it can truly simulate a variety of test environments, and therefore in the earthquake, aerospace, transportation, energy and scientific research and other fields have been more and more widely used. The description of the vibration environment, the majority of the acceleration waveform recording vibration. Therefore, in environmental tests, the reproduction of acceleration waves has become the biggest issue. The usual position control system, has been widely used in material testing machine, and achieved good control effect. However, it is just an open-loop control of acceleration. The distortion of the high-frequency wave in the acceleration waveform is hard to show in the displacement waveform. So even with good position control, speed up