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Sliding-Mode Guidance and Control for All-Aspect Interceptors with Terminal Angle Constraints

Kumar, Shashi Ranjan and Rao, Sachit and Ghose, Debasish (2012) Sliding-Mode Guidance and Control for All-Aspect Interceptors with Terminal Angle Constraints. In: JOURNAL OF GUIDANCE CONTROL AND DYNAMICS, 35 (4). pp. 1230-1246.

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Official URL: http://dx.doi.org/10.2514/1.55242

Abstract

In this paper, sliding-mode-control-based guidance laws to intercept stationary, constant-velocity, and maneuvering targets at a desired impact angle are proposed. The desired impact angle, which is defined in terms of a desired line-of-sight angle, is achieved in finite time by selecting the missile's lateral acceleration to enforce terminal sliding mode on a switching surface designed using nonlinear engagement dynamics. The conditions for capturability are also presented. In addition, by considering a three-degree-of-freedom linear-interceptor dynamic model and by following the procedure used to design a dynamic sliding-mode controller, the interceptor autopilot is designed as a simple static controller to track the lateral acceleration generated by the guidance law. Numerical simulation results are presented to validate the proposed guidance laws and the autopilot design for different initial engagement geometries and impact angles.

Item Type: Journal Article
Additional Information: Copyright for this article belongs to the American Inst of Aeromautics and Astronautics
Department/Centre: Division of Mechanical Sciences > Aerospace Engineering (Formerly, Aeronautical Engineering)
Date Deposited: 17 Aug 2012 06:52
Last Modified: 17 Aug 2012 06:52
URI: http://eprints.iisc.ernet.in/id/eprint/44947

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