Application of frequency-domain stability criteria to certain nonlinear position control systems

Application of frequency-domain stability criteria to certain nonlinear position control systems

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Results are obtained by the construction of a quadratic form of Lyapunov function, following the method of McGee and MacLellan. A comparison with Fallside and Ezeilo shows that, for certain systems containing a nonlinearity which is a function of several variables, previously established sufficient conditions for stability are substantially weakened.


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Comment: Criterion for the stability of a fourth-order position control system
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