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本文对3m×4m单水平向,最大出力为20t的电液伺服地震模拟振动台的模拟控制系统进行了详细的理论分析.在不同载荷条件下,采用不同调节器参数对系统特性进行了计算,并且给出了最优结果.计算分析了压差反馈对系统频宽及稳定性的影响.关于本文分析的PID控制方法在地震模拟振动台上使用的理论分析计算目前还未见发表,本文的分析计算结果对地震模拟振动台的抗震实验提供了重要的理论依据.
In this paper, a detailed theoretical analysis of the 3m×4m single-horizontal, maximum-output 20t electro-hydraulic servo-simulating shaking table simulation control system is performed. Under different load conditions, different regulator parameters are used to calculate the system characteristics. The optimal results are given. The influence of differential pressure feedback on the system bandwidth and stability is calculated and analyzed. The theoretical analysis and calculation of the PID control method used in the seismic simulation shake table is not published yet. The analysis and calculation results provide an important theoretical basis for the earthquake-resistance experiment of earthquake simulation shaking table.