闭环光纤陀螺数字控制器的设计与仿真  

Design and simulation of a digital controller for closed-loop fiber optic gyroscopes

作　　者：王妍[1] 张春熹[1] 刘镇平[1] 

机构地区：[1]北京航空航天大学宇航学院,北京100083

出　　处：《光电工程》2004年第B12期108-110,113,共4页Opto-Electronic Engineering

摘　　要：数字闭环光纤陀螺可以看作一个数字控制系统,根据陀螺工作原理推导出系统离散传递函数。为消除稳态误差及改善零偏稳定性,数字控制器中加入积分环节和滑动平均滤波器,并引入PID 控制算法改善系统动态特性。根轨迹分析表明,控制器增益过大将引起系统不稳定。仿真结果显示,加入综合所得数字控制器,可以满足陀螺实际应用需要。A digital closed-loop Fiber Optic Gyroscope (FOG) can be considered as a digital control system and the discrete transfer function of the system can be derived according to the operating principle of FOG. In order to eliminate stably state error and improve zero bias stability, integral and moving average algorithm can be applied to the digital controller, and PID control algorithm is also introduced for improving dynamic performance of the system. The method of root locus, the relation between stability and gain of controller are discussed. The system would be instable if the gain is too big. The simulation results show that system with such digital controller can meet the requirements of practical applications.

关 键 词：光纤陀螺 数字控制器 闭环控制 静态性能 动态性能 

分 类 号：V241.5[航空宇航科学与技术—飞行器设计]