DESCRIBING-FUNCTION METHOD FOR THE STUDY OF SINGLE LOOP CONTROL SYSTEMS CONTAINING SEVERAL NONLINEARITIES
用諧波平衡法研究具有几个非綫性元件的单廻路調节系統

The single-loop control systems containing several nonlinearities are studied by describing-function method. A method is proposed by which the entire system can be divided into simple sections each of which contains but one nonlinearity. Then the selfsustained oscillation and its stability are studied for the case when the nonlinearities are single-valued and symmetric. Finally, systems with forced oscillations are also analysed.