CAJ | 학술논문

在利用CCD闭环的快速倾斜镜(FSM)控制系统中,延迟是控制性能最大的限制,严重制约了闭环性能和控制带宽.本文在PID控制器的基础上串联一个积分器,利用PI-PI控制器提高CCD闭环的FSM控制系统的性能.建立了一套详细的控制模型,给出了控制器参数整定的公式.理论和实验表明,采用 PI-PI 控制器的误差抑制带宽要窄一点,高频段抑制能力同积分控制器相当,但是对低频的误差抑制能力要强的多.
재이용CCD폐배적쾌속경사경(FSM)공제계통중,연지시공제성능최대적한제,엄중제약료폐배성능화공제대관.본문재PID공제기적기출상천련일개적분기,이용PI-PI공제기제고CCD폐배적FSM공제계통적성능.건립료일투상세적공제모형,급출료공제기삼수정정적공식.이론화실험표명,채용 PI-PI 공제기적오차억제대관요착일점,고빈단억제능력동적분공제기상당,단시대저빈적오차억제능력요강적다.
@@@@One of the main limitations to CCD-Based system is the time delay in the control loop of Fast Steering Mirror (FSM). The stability of closed loop and its bandwidth is entirely dependent on this term. Time delay is usually difficult to compensate. Therefore, a tentative approach to the implementation of a CCD-based tracking control system with a simple PI-PI controller is proposed. The controller is to add an integrator into PID controller, resulting in two integrators in the control loop of fast steering mirror. First, a detailed model of CCD-based tracking loop is designed to analyze the characteristic of the close loop system, and then the results of parameters for the PI-PI and I controller are given. At last, the performance of the closed loop system with the two different controllers is compared. Although the bandwidth of error attenuation with PI-PI controller is little smaller than that of I controller, the error attenuation at low frequency is enhanced greatly. The experiment results are in great accordance with the theoretical analysis.