On direct adaptive control of nonminimum-phase plants
โ Scribed by C.Richard Johnson Jr.
- Publisher
- Elsevier Science
- Year
- 1980
- Tongue
- English
- Weight
- 727 KB
- Volume
- 20
- Category
- Article
- ISSN
- 0020-0255
No coin nor oath required. For personal study only.
๐ SIMILAR VOLUMES
This correspondence is in response to the recent excellent survey of Clarke (1984, Autoraatica, 20, 501-517), which points out that minimum variance self-tuning controllers fail in the control of nonminimum-phase plants. It is also in response to recent algorithms of Ydstie (1984, Preprints 9th IFAC
Abatraet-Nonminimum-phase (NMP) zeros may cause severe transients, like undershoots and oscillations, in a step response. The discrete-time case is studied in which a design of a set-point feedforward by placement of additional zeros is proposed. Optimal placements of zeros are given that minimize t
The main contribution of this paper is to put stability requirements for convergence of direct adaptive periodic controllers on an equal footing with requirements for indirect adaptive periodic control as set forth by Lozano. The resulting stability condition is simply that the plant order is known
In this paper the model reference adaptwe control (MRAC) problem of a class of hnear time-varying (LTV) plants is considered The plant parameters are assumed to be smooth, bounded functions of t~me which satisfy the usual assumptions of MRAC for tlme-mvanant plants, at each frozen time instant It is