应用于精密光束指向系统的复合PID控制器研究  

Research on composite PID controller used in fine pointer of beam

作　　者：刘洋[1] 夏润秋 吕勇[1] LIU Yang;XIA Runqiu;Lü Yong(School of Instrumentation Science and Opto-electronics Engineering,Beijing Information Science&Technology University,Beijing 100192,China)

机构地区：[1]北京信息科技大学仪器科学与光电工程学院,北京100192

出　　处：《激光技术》2018年第6期868-872,共5页Laser Technology

摘　　要：为了解决传统比例-微分-积分(PID)控制器在精密光束指向系统(FPB)应用中存在的控制精度与超调量之间的矛盾,并使其可在现有控制系统硬件平台中应用,设计了一种数字复合PID控制器。该控制器采用了传统PID、前馈补偿以及抗积分饱和算法三部分综合而成,在控制器复杂性和处理时间不显著增加的前提下,缩短了调节时间及过冲,改善FPB系统的指向精度及动态特性;对该控制器的结构进行了分析,并与采用传统PID控制器的FPB进行了对比试验。结果表明,在相同的实验条件下,采用复合PID控制器的FPB系统与采用传统PID控制器的FPB系统相比,调整时间缩短了约11. 4%,最大超调量从12. 7%降至1. 8%。在现有计算能力受限的控制系统平台上,可实现FPB系统性能的有效提升。In order to solve the contradiction between control precision and overshoot in the application of traditional proportional-integration-differential(PID)controller in fine pointer of beam(FPB),and make it applicable to the hardware platform of the existing control system,one composite PID controller was designed.The controller was composed of traditional PID,feed forward compensation and anti-integral saturation algorithm.Without increasing the complexity and the processing time of the controller significantly,the composite controller shortened adjustment time and overshoot,and improved pointing accuracy and dynamic characteristics of FPB system.The structure of the composite controller was analyzed and was compared with traditional PID controller of FPB.The results show that,under the same experimental conditions,the adjusting time of FPB system with composite PID controller is shortened by 11.4%and the maximum overshoot is reduced from 12.7%to 1.8%compared with FPB system with traditional PID controller.In the existing control system platform with limited computing power,the performance of FPB system can be effectively improved by using composite PID controller.

关 键 词：测量与计量 精密光束指向 前馈补偿 抗饱和积分 

分 类 号：TN247[电子电信—物理电子学]