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A boundary gradient search technique and its applications in design centering

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3 Author(s)
H. L. Abdel-Malek ; Dept. of Eng. Math. & Phys., Cairo Univ., Giza, Egypt ; A. -K. S. O. Hassan ; M. H. Heaba

A boundary gradient search technique is introduced. The technique generates a sequence of points on the boundary of the feasible region converging to a fixed point. The gradient of the boundary at this fixed point has a prespecified directional ratio. The boundary search technique is exploited in a modification of the ellipsoidal technique for design centering. This modification allows the use of double-sided ellipsoidal sections instead of single-sided ellipsoidal sections. It improves the speed of convergence of the ellipsoidal technique. Also, a computationally inexpensive technique of determining the gradient of the gain constraints is introduced. Practical examples are given to demonstrate the new technique

Published in:

IEEE Transactions on Computer-Aided Design of Integrated Circuits and Systems  (Volume:18 ,  Issue: 11 )