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Sliding mode control based terminal impact angle constrained guidance laws using dual sliding surfaces

Rao, Sachit and Ghose, Debasish (2012) Sliding mode control based terminal impact angle constrained guidance laws using dual sliding surfaces. In: 12th IEEE Workshop on Variable Structure Systems, 12-14 Jan. 2012, Mumbai, Maharashtra.

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Official URL: http://dx.doi.org/10.1109/VSS.2012.6163523


In this paper, sliding mode control theory based guidance laws to intercept non-maneuvering targets at a desired impact angle are presented. The desired impact angle, defined in terms of a desired line-of-sight (LOS) angle, is achieved by selecting the missile's lateral acceleration (latax) to enforce sliding mode on a sliding surface based on this LOS angle. As will be shown, this guidance law does not ensure interception for all states of the missile and the target during the engagement. Hence, to satisfy the requirement of interception at the desired impact angle, a second sliding surface is designed and a switching logic, based on the conditions necessary for interception, is presented that allows the latax to switch between enforcing sliding mode on one of these surfaces so that the target can be intercepted at the desired impact angle. The guidance laws are designed using non-linear engagement dynamics.

Item Type: Conference Paper
Additional Information: Copyright of this article belongs to IEEE.
Department/Centre: Division of Mechanical Sciences > Aerospace Engineering(Formerly Aeronautical Engineering)
Depositing User: Francis Jayakanth
Date Deposited: 04 Mar 2014 11:30
Last Modified: 04 Mar 2014 11:30
URI: http://eprints.iisc.ac.in/id/eprint/48524

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