- TITLE: Inversion-Free Design Algorithms for
Multivariable Quantitative Feedback Theory: an Application to Robust
Control of a CD-ROM
- AUTHORS: Park, M.S., Chait, Y., and Steinbuch, M.
- ABSTRACT: This paper describes an application of multivariable Quantitative
Feedback Theory (QFT) to a robust performance design of a compact disc
mechanism. Robust control design is based on new QFT design algorithms
which do not involve loop transmission inversion found in present QFT
design algorithms. Their advantage is that even when the designer prefers
inversion-based QFT loop shaping, the associated bounds can still be
computed more efficiently using our inversion-free design algorithms.
Plant uncertainty consists of parametric variations in the natural frequencies
of dominant mechanical resonances and a variation in the interaction
between the focus and radial loops. Robust performance specifications
were given in terms of the multivariable closed-loop sensitivity function.
The QFT controller was implemented in an experimental setup.
- STATUS: Automatica, Vol. 33, pp. 915-926, 1997.
- DATE OF ENTRY: November 04, 1996
- full paper (postscript, 755KB)
Zip file (92KB)
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