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On improving the performance with bounded continuous feedback laws

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2 Author(s)
Tingshu Hu ; Dept. of Electr. & Comput. Eng., Virginia Univ., Charlottesville, VA, USA ; Zongli Lin

We present controller design methods to smooth the discontinuity resulting from a piecewise linear control law which was proposed to improve the convergence performance for systems with input constraints. The continuous control laws designed in this paper are explicit functions of the state and are easily implementable. We also show that the convergence performance can be further improved by using a saturated high-gain feedback law. The efficiency of the proposed methods is illustrated with the PUMA 560 robot model.

Published in:

Automatic Control, IEEE Transactions on  (Volume:47 ,  Issue: 9 )