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二阶系统不仅是自动控制原理中的重要内容,而且实际工程中的自动控系统,在一定条件下,忽略一些次要因素,往往可以由高阶系统降阶作二阶系统处理。二阶系统通常又可用特征参数ζ及ωn来描述其动态特性。但是,对于二阶系统特征参数ζ及调整时间t_s曲线,借助电子计算机获得的解,出现若干间断点。为什么会产生这一现象?本文从理论上对此问题进行了分析。
The second-order system is not only an important part of the automatic control principle, but also the automatic control system in the actual project, under certain conditions, neglects some secondary factors and can often be processed by the second-order system from the higher order system. Second-order systems usually use the characteristic parameters ζ and ωn to describe their dynamic characteristics. However, with respect to the second-order system characteristic parameter ζ and the adjustment time t_s curve, a number of discontinuities occur with the solution obtained by the electronic computer. Why does it happen? This paper analyzes the problem theoretically.