size of input meaning in English

输入大小

The innovative ideas in this paper is to replace the linear fixed - gain pid controller for a nonlinear pid controller . based on the step response curves of conventional control system , we analyze the ideal variety of three gains in different times and construct the simulated curves of proportional , intergral and derivative gain . the controllers has considered all sorts of imperceptible factors affecting the servo performances in a lpmsm servo system , which include the parametric uncertainties brought by the changes of the mobile mass , the dynamitic performance of the system and the size of input . to solve the problem of so many unknown parameters , we use transmit arithmetic to find the parameters which are fit for the system . to keep the robust and stable performance
本文的创新之处在于，将传统的固定增益的pid控制器用非线性pid控制器来代替，并在此基础上，就一般控制系统的阶跃响应曲线，分析了在不同响应时间阶段pid的三个增益调节参数的理想变化情况，并根据这些理想变化，分别给出了比例、积分、微分增益参数的一种连续的非线性拟和函数。在分析双位置环时，仔细考虑了能使系统性能变坏的各种因素，如系统的动态性能及控制出入能量的大小等等。