Popov Absolute Stability Criterion
نویسندگان
چکیده
This paper extends in a simple way the classical absolute stability Popov criterion to multivariable rational systems with time-varying memoryless nonlinearities subject to sector conditions. The proposed suucient conditions are expressed in terms of easy-to-check Linear Matrix Inequalities , or under a frequency-domain form well-suited for robustness issues, and lead to simple graphical interpretations. Apart from the usual conditions, the results assume basically a sector condition on the derivative of the nonlinearities with respect to time. Results for local and global stability are given.
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