Title :
An O(T2) boundary layer in sliding mode for sampled-data systems
Author :
Su, Wu-Chung ; Drakunov, Sergey V. ; Ozguner, Umit
Author_Institution :
Dept. of Electr. Eng., Nat. Chung-Hsing Univ., Taichung, Taiwan
fDate :
3/1/2000 12:00:00 AM
Abstract :
The use of a discontinuous control law (typically, sign functions) in a sampled-data system will bring about chattering phenomenon in the vicinity of the sliding manifold, leading to a boundary layer with thickness O(T), where T is the sampling period. However, by proper consideration of the sampling phenomenon in the discrete-time sliding mode control design, the thickness of the boundary layer can be reduced to O(T2). In contrast to discontinuous control for continuous-time VSS, the discrete-time sliding mode control need not be of switching type
Keywords :
closed loop systems; discrete time systems; sampled data systems; variable structure systems; boundary layer; chattering; closed loop systems; discrete-time systems; sampled-data system; sliding mode control; variable structure systems; Automatic control; Bayesian methods; Filtering theory; IEEE Press; Jacobian matrices; Kalman filters; Nonlinear equations; State estimation; Stochastic processes; Target tracking;
Journal_Title :
Automatic Control, IEEE Transactions on
