## Output feedback $$H_ \infty$$ control of systems with parameter uncertainty.(English)Zbl 0841.93014

Summary: This paper deals with $$H_\infty$$ control problem for systems with parametric uncertainty in all matrices of the system and output equations. The parametric uncertainty under consideration is of a linear fractional form. Both the continuous and the discrete-time cases are considered. Necessary and sufficient conditions for quadratic stability with $$H_\infty$$ disturbance attenuation are obtained.

### MSC:

 93B36 $$H^\infty$$-control 93C99 Model systems in control theory
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### References:

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