1 H Infinity ()
The H Infinity control paradigm () was developed in the early 1980's by Zames, Doyle and Glover and Kwakernak among others.
The method involves two processes:
- Definition of specifications based on the -norm of the weighted sensitivity function or functions.
- Controller design and optimisation whereby specifications are met as closely as possible by shaping the weighted sensitivity transfer function.
2 Constraints and Specifications: Nominal Stability
Nominal stability is a fundamental requirement of the closed loop system, and simply ensures that under nominal conditions, the system will not be unstable.
3 Nominal Performance
For nominal performance, it is required that the norm should conform to the inequality
Where is the weighting for the primary sensitivity function
4 See Also
- Skogestad, S., Postlethwaite, I. 2005 Multivariable Feedback Control: Analysis and Design. 2nd. Wiley. ISBN 0470011688
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