Time-varying sliding mode guidance scheme for maneuvering target interception with impact angle constraint |
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Institution: | 1. School of Automation, Beijing Institute of Technology, Beijing 100081, PR China;2. State Key Laboratory of Intelligent Control and Decision of Complex Systems, Ministry of Education of the People’s Republic of China, Beijing 100081, PR China;3. China Academy of Launch Vehicle Technology, Beijing 100076, PR China;1. School of Aerospace Engineering, Beijing Institute of Technology, Beijing 100081, China;2. Department of Mechanical and Aerospace Engineering, University of Missouri, Columbia, MO 65211, USA |
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Abstract: | In this paper, a guidance scheme for impact angle control against maneuvering targets with unknown target acceleration is proposed. In this scheme, the unknown target acceleration is estimated via a linear extended state observer; a novel time-varying global slide mode control technique is presented to eliminate the reaching phase and enforce a desired impact angle exactly at the time of interception with finite-time convergence, good robustness, high precision and smooth guidance command. Moreover, feasible guidance logics are developed to achieve all-aspect interception with the tolerance of large initial heading errors. Numerical simulations in various scenarios are performed to verify the performance of the proposed guidance scheme. |
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