A result that allows us to specify the sliding manifold in observer-based discrete-time sliding mode control is presented. Selection of coefficients is done by analyzing the tracking error dynamics inside the boundary layer, where the closed-loop system has a linear state feedback configuration, rather than assuming that ideal sliding occurs. The result facilitates assignment of eigenvalues for the system matrix which defines such linear dynamics.

Issue Section:
Technical Briefs
Keywords:
eigenvalues and eigenfunctions, discrete systems, variable structure systems, observers, closed loop systems, state feedback, position control, disc drives, hard discs, matrix algebra
Topics:
Boundary layers, Eigenvalues, Sliding mode control, State feedback, Closed loop systems, Dynamics (Mechanics), Errors
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Copyright © 2006
 by American Society of Mechanical Engineers
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