摘要
航空相机位角控制系统在大给定行程条件下易出现积分Windup现象,从而影响系统的动态性能。为了提高位角控制系统在大给定输入条件下的动态响应性能,提出采用基于Anti-Windup的变结构自适应抗饱和PID控制法来设计位角控制系统。采用主副串级双回路的位置控制策略,在速度内环采用了基于Anti-Windup的变结构自适应PID控制的补偿环节,并采用基于实数编码遗传算法的PID整定方法对速度内环PID初始参数进行整定,参数选取最优指标时对超调采取惩罚功能,使位角控制系统在大给定行程输入下仍能达到比较满意的性能。实验表明:采用基于AntiWindup的变结构自适应PID控制的控制策略,避免了位角反射镜在检焦结束后的回位阶段进入饱和状态,使回位调整时间缩小了35.7%,提高了检焦结束后大行程回位的速度。
The integral Windup phenomenon from a position angle control system in the aviation camera is more likely to happen when a big travel is given, which will affect the dynamic performance of the camera. To improve the dynamic response performance of the position-angle control system on this ters of speed inner loop, and the optimal index of parameter selection used punishment function to e- liminate the overshoot. As mentioned above, the position- angle control system is able to achieve sat- isfactory performance in a large position given. Experiments show that the control strategy based on the Anti-Windup variable structure adaptive PID control avoids the position angle mirror coming into a saturation in the back stage after auto-focusing, increases the adjust time of back stage by 35.7% and improves the return performance of the position angle mirror.
出处
《光学精密工程》
EI
CAS
CSCD
北大核心
2014年第3期626-632,共7页
Optics and Precision Engineering
基金
国家863高技术研究发展计划资助项目(No.2007AA701203)
关键词
航空相机
变结构
抗饱和
检焦
位角控制系统
自适应控制
aerial camera
variable structure
anti-saturation
auto-focusing
position angle control
a- daptive control
