红外目标模拟器中分离镜的滑模变结构控制  

Sliding Mode Variable Structure Control for the Separating-mirror of Infrared Target Simulator

作　　者：吴振远[1] 梅晓榕[1] 冯汝鹏[1] 

机构地区：[1]哈尔滨工业大学控制科学与工程系,哈尔滨150001

出　　处：《光电工程》2008年第1期1-4,104,共5页Opto-Electronic Engineering

摘　　要：针对红外目标模拟器中分离镜伺服系统的抗干扰控制问题,本文利用变结构控制响应快速,对系统参数变化和外部扰动不灵敏的特点设计了一个滑模变结构控制器。采用指数趋近律与饱和函数相结合的方法对滑模控制器的抖振进行了有效抑制。采用机理分析方法建立了分离镜系统的数学模型。在仿真过程中,利用S函数描述摩擦模型,简化了仿真建模,提高了仿真速度。通过数字仿真并与传统PID控制方法相比较,证明滑模控制器对于分离镜伺服系统的参数摄动和外部干扰具有良好的鲁棒性,可以保证和提高整个红外制导仿真实验系统的仿真精度和实验结果的置信度。Based on quick response performance and insensitivity to variation of plant parameters and external disturbance of the variable structure control, a variable structure controller with sliding mode （SMC） is designed for the separating-mirror servo system of infrared target simulator. The chattering of variable structure controller with sliding mode is reduced by using exponential reaching law with saturation function, Mathematical model of the separating-mirror is constructed by the mechanism analysis method. The application of S-function simplifies the simulation modeling of the complex system and improves the simulation speed, By the simulation research and.comparison with simulation results of the PID controller, simulation result shows that, variable structure controller with sliding mode has a strong robustness for external disturbance and parameter changes of the separating-mirror, and it can guarantee simulation precision and fidelity of experiment results of infrared guidance simulation system.

关 键 词：红外制导仿真系统 分离镜 滑模变结构控制 鲁棒性 红外目标模拟器 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置]