Title :
Dual input discrete describing function
Author :
Rao, Prahlada ; Janakiraman, P.A.
Author_Institution :
Indian institute of Technology, Madras 36, India
fDate :
8/1/1969 12:00:00 AM
Abstract :
The definition and development of a modified discrete describing function, referred to as dual input discrete describing function, is considered. High-frequency signal is injected into the non-linearity to quench the limit cycles in closed-loop autonomous relay-type sampled-data systems. An analytic procedure is described, which aims at deriving the dual input discrete describing function for a relay in the

domain.
Keywords :
Describing functions; Relay control systems; Asymptotic stability; Automatic control; Control systems; Feedback; Frequency; Limit-cycles; Nonlinear control systems; Nonlinear systems; Relays; Sampling methods;
Journal_Title :
Automatic Control, IEEE Transactions on
DOI :
10.1109/TAC.1969.1099208