Sliding mode control using only output information
Sliding mode control using only output information
- Author(s): C. Edwards ; R. Cortes ; S.K. Spurgeon
- DOI: 10.1049/ic:19971294
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- Author(s): C. Edwards ; R. Cortes ; S.K. Spurgeon Source: IEE Colloquium on Robust Control: Theory, Software and Applications, 1997 page ()
- Conference: IEE Colloquium on Robust Control: Theory, Software and Applications
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Variable structure control with a sliding mode is an established method of controlling uncertain dynamical systems. Traditional variable structure control systems employ a discontinuous control action to force the system states to remain on a surface, usually a hyperplane, within the state-space. This results in a reduced order, surface dependent motion, known as a sliding mode. This motion is insensitive to disturbances implicit in the input channel, the so-called matched uncertainty, and makes the methodology an attractive one for synthesising robust controllers for uncertain systems. The design approach comprises two components: the design of a surface in the state-space so that the reduced order sliding motion satisfies the specifications imposed on the designer; and the synthesis of a control law, discontinuous about the sliding surface, such that the trajectories of the closed loop motion are directed towards the surface. (4 pages)
Inspec keywords: state-space methods; variable structure systems; uncertain systems; robust control; control system synthesis
Subjects: Multivariable control systems; Stability in control theory; Control system analysis and synthesis methods
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