Comparative investigations of nonlinear and linear observers for a highly manoeuvrable target in sliding mode guidance

Bulletin of the Polish Academy of Sciences. Technical Sciences

Y. WangAVIC LEIHUA Electronic Technology Research Institute, Wuxi 214063, ChinaOther articles by this author:De Gruyter OnlineGoogle Scholar¹  M. SunCorresponding authorCollege of Computer and Control Engineering, Nankai University,Tianjin 300350, China ChinaTianjin Key Laboratory of Intelligent Robotics, Nankai University, Tianjin 300350, ChinaEmailOther articles by this author:De Gruyter OnlineGoogle Scholar²  Z. ChenCollege of Computer and Control Engineering, Nankai University,Tianjin 300350, China ChinaTianjin Key Laboratory of Intelligent Robotics, Nankai University, Tianjin 300350, ChinaOther articles by this author:De Gruyter OnlineGoogle Scholar²  S. DuDepartment of Mechanical Engineering, Tshwane University of Technology, Pretoria 0001, South AfricaOther articles by this author:De Gruyter OnlineGoogle Scholar³ 

[1] AVIC LEIHUA Electronic Technology Research Institute, Wuxi 214063, China;College of Computer and Control Engineering, Nankai University,Tianjin 300350, China China;Department of Mechanical Engineering, Tshwane University of Technology, Pretoria 0001, South Africa

关键词: Keywords: guidance law;    second-order sliding mode;    super-twisting algorithm;    linear observer;    target manoeuvre;   

DOI  :  10.1515/bpasts-2017-0027

学科分类：工程和技术（综合）

来源: Polska Akademia Nauk * Centrum Upowszechniania Nauki / Polish Academy of Sciences, Center for the Advancement of Science

【 摘 要 】

Target manoeuvre is one of the key factors affecting guidance accuracy. To intercept highly maneuverable targets, a second-order sliding-mode guidance law, which is based on the super-twisting algorithm, is designed without depending on any information about the target motion. In the designed guidance system, the target estimator plays an essential role. Besides the existing higher-order sliding-mode observer (HOSMO), a first-order linear observer (FOLO) is also proposed to estimate the target manoeuvre, and this is the major contribution of this paper. The closed-loop guidance system can be guaranteed to be uniformly ultimately bounded (UUB) in the presence of the FOLO. The comparative simulations are carried out to investigate the overall performance resulting from these two categories of observers. The results show that the guidance law with the proposed linear observer can achieve better comprehensive criteria for the amplitude of normalised acceleration and elevator deflection requirements. The reasons for the different levels of performance of these two observer-based methods are thoroughly investigated.

【 授权许可】

Unknown