NDLI: Multi-rate control systems with multi-rate model-based holds and observers

Content Provider	IEEE Xplore Digital Library
Author	Armesto, L. Tornero, J. Tomizuka, M.
Copyright Year	2004
Description	Author affiliation: Departamento de Ingenieria de Sistemas y Autom., Univ. Politecnica de Valencia, Spain (Armesto, L.; Tornero, J.)
Abstract	This paper deals with the design of multi-rate control systems using multi-rate holds, which act as interfaces between the different sampling frequencies present at the control loop. Multi-rate model holds generate error signal estimation at high-frequency based on a closed-loop reference model. The paper describes first the modeling of multi-rate model-based holds and observers and later its effect in the closed-loop time response. In addition, the benefits of introducing the multi-rate holds can be studied before implementing the multi-rate solution just by analyzing the limit case, where the periodicity ratio between frequencies goes to infinite with the frame-period constant. The proposed multi-rate hold and observer are validated with a velocity control of brush-less DC motor, where improvements are performed with respect to the single-rate case at low frequency.
Sponsorship	IEEE Control Syst. Soc
Starting Page	1757
Ending Page	1762
File Size	390695
Page Count	6
File Format	PDF
ISBN	0780386337
DOI	10.1109/CCA.2004.1387631
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2004-09-02
Publisher Place	Taiwan
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Control system synthesis Sampling methods Frequency Estimation Control systems Signal design Design methodology Error correction Regulators Automatic control
Content Type	Text
Resource Type	Article

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