地震模拟振动台系统频率特性分析方法的研究

Study on methods for analyzing frequency characteristics of shaking table systems

本文进行了地震模拟振动台系统频率特性分析方法的研究。简述了振动台系统频率特性的传统分析方法,并指出了它们的不足。提出了确定振动台系统频率特性的新方法,该方法与传统方法有着本质的不同,其基本思想是,先基于输入和输出信号建立系统的数学模型,然后再根据系统的数学模型确定系统的频率特性。给出了分析实例,并验证了本方法的精确性。

Study on methods for analyzing frequency characteristics of shaking table systems is carried out in the paper. Traditional methods for analyzing frequency characteristics of the shaking table systems are brief stated, and their shortage is pointed out. A new method for determining frequency characteristics of the shaking table systems, which is essentially different from the traditional methods, is put forward. The basic idea of the method is that the mathematical model of the systems is first established on the basis of the signals of input and output, and then frequency characteristics of the systems is determined according to the mathematical model of the systems. A calculation example is given, and the accuracy of the method is shown.