In automation control system , the actuator receives signals from controller or the manual operation , transfers them to the servomechanism ' s output . in that way , actuator adjusts the manipulated variable 在自动控制系统中，执行器接收来自控制器的自动调节信号或手动操作信号，将其转换成调节机构动作的输出，从而改变控制量的大小。
From an algebraic approach , the decentralized pole placement problem and robust servomechanism problem were explored ; from a geometric approach , the problem of elimination of decentralized fixed modes via time - varying decentralized control was explored 从代数角度出发，研究了一般真有理系统的分散极点配置问题和鲁棒跟随问题；从几何角度出发，研究了利用时变分散反馈消除分散固定模的问题。
According to the features of precision , efficiency , inspection dimension and accuracy varying great range , designed closed - loop control system composition of servomechanism and grating to assure system ’ s precision , smooth , efficiency , and to realize the great dimension range measurement ; designed image capture system composition of ccd , automatic variable power lens and self - adaptive lighting , to realize integration of large inspection precision range ; designed electric control and software system to make the inspection convenience and fast . finally , developed the prototype instrument 针对微电子产品视觉检测的精密、高效、检测精度和测量范围变换大的特点,设计了伺服驱动、精密光栅采集组成闭环控制系统以保证运动精密、平稳、高效,和大的尺寸测量范围;设计了由ccd摄像机、大范围自动变倍镜头和自适应光源组成的图像采集系统,集不同精度等级的检测于一体;设计了电气控制和软件系统使检测方便快捷。
In this thesis , an h - bridge power drive integrated circuit has been analyzed , designed and taped - out . it is a typical spic , which could be widely used in stepper motor drive , position and velocity servomechanism , industrial automaton , various numerical controlled equipments , printers and plotters control and other applications 本文分析、设计了一种广泛应用于直流电机和步进马达驱动、位置与速度伺服系统、工业机器人、各种数控设备和打印机和绘图仪等中的spic电路? ?单片h桥功率驱动集成电路,并对此电路进行了流片。
Piston ring is the important accessory of the engine and turning its contour is the key procedure to ensure the performance of piston ring it has great value in economy and society that we develop the nc machining system for outer circle of piston ring to manufacture the high quality piston ring and to replace the import machine according to piston ring contour data provlded by the cad system ， it can turn the piston ring contour by controlling the displacement of servomechanism which is controlled by the angle of servo motor it uses the theories of velocity closed loop 、 dlsplacement closed loop and feed forward control to improve the control precision of system on the basis of theories of elastic mechanics and mathematics ， the cad system can provide the accurate data required by the nc machine system according to the calculation model and the parameters of piston ring this system integrates the cad cam technology 系统根据活塞环cad系统生成的接口数据，通过伺服电机的转角位置控制自主研制的高性能微位移进给机构产生给定的位移，以完成活塞环轮廓的仿型加工。系统采用速度、位置闭环控制及前馈控制理论，以提高系统的控制精度。活塞环cad系统以弹性力学和数学方法为基础，根据常用的计算模型与活塞环参数自动生成数控加工系统所需的精确的接口数据，实现cad / cam一体化。
