光电跟踪系统的双模控制

引入了模糊控制法和滞后超前校正法相结合的双模控制技术来提高光电跟踪系统的响应速度、抗干扰性能并降低超调。分别介绍了模糊控制法和滞后超前校正法的工作原理,基于两种方法的优势,设计了双模控制系统。利用MATLAB对双模控制系统进行了仿真实验和相应的实验验证。仿真实验显示:相比滞后超前校正法,双模控制法能够有效降低系统超调,提高系统响应速度,同时具有更强的抗干扰性。利用实际光电跟踪转台对双模控制法进行了实验验证,分别对转台进行了方位系统180°阶跃实验和俯仰系统60°阶跃实验,并与滞后超前校正法进行了对比。结果显示,双模控制法使方位系统和俯仰系统的超调都达到了0%,调节时间和稳态精度也都有所提高。得到的结果表明提出的双模控制法能够有效降低光电跟踪系统的超调,提高响应速度,增强系统的抗干扰性。

Dual mode control for electro-optical tracking systems

A dual mode control technology in combination of fuzzy control method with lag-lead compensation method was introduced to improve the response speed, anti-jamming performance and to reduce the overshoot of an electro-optical tracking system. The operation principles of fuzzy control method and lag-lead compensation method were introduced respectively. Based on the advantages of two methods mentioned above, the dual mode control system was designed. Then the MATLAB was used to perform the simulation experiments for the dual mode control system and corresponding actual experimental verification. The simulation results show that dual mode control technology reduces the overshoot of the system, improves the response speed of the system effectively and has a much better capability in anti-jamming as compared with the lag-lead compensation method. Furthermore, the actual experiment of the dual mode control technology was performed on an electro-optical tracking platform, the experiments by 180°step for azimuth subsystem and 60°step for elevation subsystem were carried out.The results show that the overshoots of both azimuth and elevation subsystems reach 0%, meanwhile their adjusting time and precision of steady state are improved. It concludes that the dual mode control method is characterized by faster responding speeds, small overshoot and higher capability in anti-jamming.