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**Contents**

ôÏÍ 6 N 1 2000

F. H. Clarke, Yu. S. Ledyaev, R. J. Stern

For problems of stabilizability and state constrained optimal control, the proximal aiming technique of nonsmooth analysis is employed in order to construct discontinuous feedback laws with respect to a generalized solution concept for the underlying dynamics. These feedbacks are universal for prescribed sets of initial data and possess robustness properties with respect to state measurement errors and external disturbances.

- 1 INTRODUCTION

- 2 Stabilizability
- 3 Fixed duration state constrained optimal control

- 4 ACKNOWLEDGMENTS
- Bibliography

2003-08-05