## Zntroduction In this paper we compare the behavior of a multivariable feedback system with that of a "comparison" open-loop system. We view the "plant" P, the "precompensator" G and the "feedback" F as operators taking vectorvalued inputs into vector-valued outputs ; P, will denote the normal va
Directional sensitivity tradeoffs in multivariable feedback systems
โ Scribed by V.R. Sule; V.V. Athani
- Publisher
- Elsevier Science
- Year
- 1991
- Tongue
- English
- Weight
- 396 KB
- Volume
- 27
- Category
- Article
- ISSN
- 0005-1098
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โฆ Synopsis
In this paper tradeoffs in multivariable sensitivity reduction are developed for a new Directional Sensitivity Function (DSF). The directions considered belong to direction modules of the nonminimum phase zeros (NMP) and unstable poles of the transfer matrices. The well known Bode Integral is extended for the DSF whenever the direction vector coincides with the direction module of an unstable pole. Similarly the tradeoff known as the waterbed effect is extended whenever the direction vector coincides with the direction module of a NMP zero. These results intuitively exhibit the effect of spatial positions of poles and zeros of multivariable systems on sensitivity.
๐ SIMILAR VOLUMES
Integrity against arbitrary feedback-loop failure in linear multivariable control systems is ensured if and only if the return difference matrix or the sensitivity matrix is a U-matrix and the controller is stable.
7he problem of determining what variables are the more important to measure in a linear time-invariant multivariable system with linear time-invariant incomplete state feedback is considered. Summary--The problem of choosing the "best" state variables to measure from a set of measurable state varia