The mrf machine servo system decides the machining accuracy , surface quality of the work - piece and productivity . in this paper , the model of servo system transfer function is established by analyzing the structure of servo system and the system model parameter is obtained by using frequency - domain model 本文以磁流变抛光机床的伺服进给系统为研究对象,通过对伺服进给系统的结构分析,建立了伺服进给系统的传递函数模型,并运用频域建模的方法得到了系统模型参数。
Models of electro - hydraulic servo valve , gear - rack swing hydraulic - pressure oil vat , double shanks hydraulic - pressure oil vat , placement sensor and torque sensor are selected in order to analog the rolling moment and swaying force more accurately . transfer functions of electro - hydraulic moment servo system and placement servo system are presented and the system parameters are gained 为了能更好的模拟海浪作用于船舶的横摇力矩和横荡力，选取了电液伺服阀、齿轮齿条摆动液压油缸、双出杆油缸、位移传感器和扭矩传感器的型号，建立了电液力矩伺服系统和位置伺服系统的传递函数模型，求取了系统参数，并对系统进行了仿真研究。
The paper builds up the mathematics model of the electromotor - drive and the turntable , gives the transfer function of the system and designs the velocity loop ' s arithmetic and position loop ' s arithmetic of turntable system . the velocity loop adopts pi control . the position loop adopts pid control 建立了电机?驱动器及转台对象的数学模型,给出了系统的传递函数,分别对转台控制系统的速度环和位置环进行了设计研究,对速度环采用pi控制,位置环采用pid控制,并详细介绍了pid算法。
The peak current control principle and its realization circuit is researched , the small signal model of the peak current controlled interleaving two - transistor forward converter is constructed and the system transfer functions is presented . then the system stability is analyzed through frequency simulation with matlab 研究了峰值电流控制原理及其实现电路,建立了峰值电流控制方式交错并联双管正激变换器的小信号模型,给出了系统的传递函数,并用matlab进行了频域仿真,在仿真的基础上对系统进行了稳定性分析。
