Finding Nonconvex Hulls of QFT Templates

[+] Author and Article Information
Edward Boje

Electrical and Electronic Engineering, University of Natal, Durban, 4041, South Africa e-mail: boje@eng.und.ac.za

J. Dyn. Sys., Meas., Control 122(1), 230-231 (Dec 28, 1998) (2 pages) doi:10.1115/1.482469 History: Received December 28, 1998
Copyright © 2000 by ASME
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Horowitz,  I., 1991, “Survey of Quantitative Feedback Theory (QFT),” Int. J. Control, 53, No. 2, pp. 255–291.
Borghesani, C., Chait, Y., and Yaniv, O., 1995, Matlab™ Quantitative Feedback Theory Toolbox, Mathworks Inc.
Rodrigues,  J. M., Chait,  Y., and Hollot,  C. V., 1997, “An Efficient Algorithm for Computing QFT Bounds,” ASME J. Dyn. Syst., Meas., Control, 119, pp. 548–552.
Horowitz,  I., and Sidi,  M., 1972, “Synthesis of feedback systems with large plant ignorance for prescribed time domain tolerances,” Int. J. Control, 16, pp. 287–309.
Schwartz, A., 1967, Calculus and Analytic Geometry, Second Edition, Holt, Rinehart, and Winston.
Matlab 5.2 Reference, The Math Works Inc., 24 Prime Park Way, Natwick, MA.


Grahic Jump Location
Inverse Nichols chart showing curvature of M=0 dB and M=−6 dB
Grahic Jump Location
Relationship between specification in dB and minimum radius (in nepers or radians) on the log-polar plane
Grahic Jump Location
Template illustrated before removal of interior points—1000 points
Grahic Jump Location
Template after removal of interior points—220 points




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