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Analysis and design of nonlinear feedback systems

Analysis and design of nonlinear feedback systems

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© The Institution of Electrical Engineers
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The paper discusses methods, primarily those using frequency-domain techniques, for the analysis and design of nonlinear feedback control systems. The behavioural properties peculiar to nonlinear feedback systems are first discussed. This is followed by a review and discussion of the applicability of absolute stability criteria and describing-function methods for single-variable and multivariable systems. The calculation of limit cycles in relay systems, time-domain methods of analysis and simulation techniques are then considered. Finally, a few applications are considered which highlight both the applicability and limitations of the available analytical techniques for nonlinear systems.

Inspec keywords: limit cycles; relay control; control system synthesis; nonlinear control systems; describing functions; control system analysis; stability criteria

Other keywords: control system analysis; time-domain methods; control system design; frequency-domain techniques; describing-function methods; simulation; absolute stability criteria; nonlinear feedback control systems; relay systems; single variable systems; limit cycles; multivariable systems

Subjects: Control system analysis and synthesis methods; Stability in control theory; Nonlinear control systems

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