改进萤火虫算法的PID控制器在光电伺服系统中的应用

Application of PID controller to photoelectric servo system with improved firefly algorithm

对光束高精度、稳定地跟踪是自由空间激光通信链路建立的前提。引入一种改进的萤火虫算法,对比例-积分-微分(PID)控制器的参数进行优化整定,同时建立了直流力矩电机系统模型,将优化参数后的PID控制器应用到此系统中,在六维仿真台上进行了实验,结果表明:对于同一个系统,与采用齐格勒和尼克尔斯(Z-N)法相比,改进的萤火虫算法对参数整定后的PID控制器的响应速度提高了40%,带宽提高了33.3%,跟踪精度提高了25%。

High precision and stable beam tracking is the premise of establishing free space laser communication link.An improved firefly algorithm is introduced to optimize the parameters of the proportional integral differential(PID)controller.At the same time,the model of the DC torque motor system is established.The optimized PID controller is applied to the system,and the experiment is carried out on the six dimensional simulation platform.The results show that for the same system,compared with the Ziegler and Nichols(Z-N)method,the optimal PID controller has better performance,the response speed,bandwidth and tracking accuracy of the improved firefly algorithm are improved by 40%,33.3%and 25%respectively.