Add-on integration module-based proportional-integration-derivative control for higher precision electro-optical tracking system. (April 2021)

• Record Type: Journal Article
• Authors: Duan, Qianwen; Mao, Yao; Zhang, Hanwen; Xue, Wenchao
• Is Part Of: Transactions of the Institute of Measurement and Control. Volume 43:Number 6(2021)
• Page Start: 1347
• Page End: 1362
• Publication Date: 2021-04
• Subjects: Proportional-integration-derivative control -- electro-optical tracking system -- motion control -- disturbance rejection -- non-dominated sorting genetic algorithm; Automatic control -- Periodicals; Measuring instruments -- Periodicals; Commande automatique -- Périodiques; Mesure -- Instruments -- Périodiques; 681.2
• DOI: 10.1177/0142331220975892
• Languages: English
• ISSNs: 0142-3312

Abstract

This paper concerns the improvement on proportional-integration-derivative (PID) control for the electro-optical tracking system for high-mobility targets. To achieve higher tracking precision and stronger disturbance rejection while fully utilizing the existing PID loop, the add-on integration module is proposed and seamlessly integrated into the conventional PID loop. It is proven that for any given conventional PID controller parameters, the add-on integration module based PID control can improve the ability of error attenuation at low frequency and keep the stability of resulting closed-loop system. More importantly, the feasible set of all parameters in the added module is explicitly given. Based on the feasible set, the non-dominated sorting genetic algorithm II (NSGA-II) is adopted to obtain the globally optimal controller's parameter under certain performance indices. The experiments are carried out for a typical electro-optical tracking test bed with several reference signals. It is shown that the proposed method has much smaller tracking errors than the existing PID method.