摘要
光电设备大角度失调时需要快速定位来重新捕获跟踪目标。传统的方法为Bang-Bang控制,单Bang-Bang控制在精确定位时,极易出现抖振现象,针对这一不足,基于直流力矩电机提出了一种双模控制,即大角度调转时采用非线性Bang-Bang控制,在精定位,且目标满足图像提取阈值时,切换为线性控制,线性控制分为两个阶段,在红外捕获过程中,位置回路采用一阶调节器,在红外跟踪环节,位置回路切换为二阶调节器,并结合脱靶量信息完成红外捕获、跟踪的闭环控制。通过试验,在给定的某直流力矩电机的基础上,加以双模控制和文章给定的切换准则,光电设备180°快速定位在1.9 s左右,比传统方法缩短了近0.5 s,快速性大大提高,同时利用激光测距机可以给出舷角相差180°的单目标三维信息数据率为0.53 Hz,稳定性达到设计要求,提高了快速定位时光电对抗能力。
Large angle misalignment of optoelectronic devices need to quickly locate to recapture tracking target, tradi- tional method is using Bang-Bang control, when the Bang-Bang control is precise positioning, the system is not easy to be stable . For this deficiency, this paper presents a kinds of double model control, namely the coarse tracking uses Bang- Bang control, when the extraction threshold of the image satisfied for thecontrast of the target, it switches linear control into the small deviation range, and during the linear control, it puts forward the strategy of infrared an order capturing and infra- red second-order tracking depending on the characteristics of different regulators, and combines the IR information to ac- complish the closed-loop control of IR tracking. Using this method and the switching criteria what the paper has given, it achieved good results in the experiment, which makes the photoelectric device spend around 1.9 s in 180° position, it is shorter nearly 0.5 s than traditional method, at the same time, the laser rangefinder gives the rate of three-dimensional in- formation about 0.53 Hz, meet the design requirements of stability and improve the optoelectric count measure ability.
出处
《微特电机》
北大核心
2016年第11期54-56,61,共4页
Small & Special Electrical Machines
