Sensitivity analysis of systems with a cascade compensator embedded in a Smith predictor to dead-time variation
- Authors: Vunder N.A.1, Ushakov A.V.1
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Affiliations:
- St. Petersburg National Research University of Information Technologies, Mechanics, and Optics
- Issue: Vol 52, No 3 (2016)
- Pages: 274-279
- Section: Automation Systems in Scientific Research and Industry
- URL: https://journals.rcsi.science/8756-6990/article/view/211961
- DOI: https://doi.org/10.3103/S8756699016030092
- ID: 211961
Cite item
Abstract
This paper considers the use of a cascade compensator embedded in a Smith predictor in the forward path of a system being designed, which is an effective way to solve two problems: providing the desired process performance in the system and placing the dead-time element outside the closed loop so that it only increases the transient time by the value of the time delay and does not affect the overshoot value. It is shown that the Smith predictor should be used with caution because, being based on an additive signal compensation scheme, it may be not robust and may require accurate knowledge of the time-delay value for robust implementation. The problem of sensitivity analysis of the system to dead-time variation is stated and solved.
About the authors
N. A. Vunder
St. Petersburg National Research University of Information Technologies, Mechanics, and Optics
Author for correspondence.
Email: polinova_nina@mail.ru
Russian Federation, pr. Kronverkskii 49, St. Petersburg, 197101
A. V. Ushakov
St. Petersburg National Research University of Information Technologies, Mechanics, and Optics
Email: polinova_nina@mail.ru
Russian Federation, pr. Kronverkskii 49, St. Petersburg, 197101
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