机载定向红外对抗激光指示系统控制设计  

Controlling design of airborne DIRCM laser pointing system

作　　者：郭劲[1] 苗用新[1,2] 林洪沂[1,2] 陈兆兵[1,2] 

机构地区：[1]中国科学院长春光学精密机械与物理研究所,吉林长春130033 [2]中国科学院研究生院,北京100039

出　　处：《光学精密工程》2009年第2期341-349,共9页Optics and Precision Engineering

基　　金：国家“十一五”项目

摘　　要：为提高机载激光指示设备三轴工作系统的控制精度,对其进行了建模仿真分析。根据拉格朗日定理推导出指示设备三轴耦合框架非线性动力学模型,对各框架回转轴之间速度耦合及动力学耦合进行分析,并理论推导出其解析关系。根据执行元件力矩电机的电学和力学方程,建立了被控制对象开环传递函数矩阵,并进一步设计串联解耦控制器来实现系统解耦控制。分析表明,解耦后,在系统中串联添加校正环节,可以使系统在稳定工作的同时达到快速响应的要求。阶跃响应速度最快时间为:方位框达0.45 s,俯仰框达0.50 s,横滚框为0.85 s。最后,通过计算机仿真验证理论模型的正确性,为今后研究和设计高精度机载激光指示设备的控制器以及选取和优化控制参数提供了理论参考和模型基础。In order to improve the control precision of the three-axis operating system used in airborne laser pointer, a simulating model is established for system analysis. A three-axis, coupling and non-linear dynamic model is built based on Lagrange theorem, and by analyzing the velocity coupling and the dynamics coupling relationships among the axis of frames, their analytical relationships in theory are deduced. Then, according to electrics and mechanic equations of the actuator-torque motor, the open-loop transfer function matrix of the control variable is established, and a cascade compensator is designed to decouple the control system. Analysis results show that the system can satisfy the quickresponse requirement at working in stablization after decoupling and adding correction function in series. The step response time are 0.45 s for the orientation frame, 0.50 s for the pitching frame, and 0.85 s for the across frame. Finally, the electro-mechanical model is verified through computer simulation, which sets a foundation and provides theoretical references for further research and design of the control system of high-precision airborne laser pointer.

关 键 词：激光指示设备 三轴系统 建模 耦合 

分 类 号：TP391.9[自动化与计算机技术—计算机应用技术] V448.133[自动化与计算机技术—计算机科学与技术]