Feedback control with Posicast

• Published in: IEEE transactions on industrial electronics (1982) Vol. 50; no. 1; pp. 94 - 99
• Main Author: Hung, J.Y.
• Format: Journal Article
• Language: English
• Published: New York IEEE 01-02-2003; The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
• Subjects: Control systems; Control theory; Damping; Dampness; Design engineering; Feedback control; Feedforward; Flexible structures; Internet; Lighting control; Nonlinear dynamical systems; Oscillations; Power converters; Resonant frequency; Robot sensing systems; Vibration control
• ISSN: 0278-0046; 1557-9948
• DOI: 10.1109/TIE.2002.804979

An alternative way to use Posicast to damp oscillations in lightly damped control systems is proposed in this paper. Specifically, it is suggested that the Posicast technique be used within a feedback system, instead of the classical feedforward configuration. There are many types of Posicast, but discussion and analysis are focused here on the classical "half-cycle" Posicast form. Theoretical analysis and a design example are used to compare classical Posicast and the proposed feedback control method. An experimental result from a power converter application is also presented.