Theory and experiments on tracking of repetitive signals via the LQG/LTR formalism
作者:
H. KAZEROONI,
期刊:
International Journal of Control
(Taylor Available online 1990)
卷期:
Volume 51,
issue 3
页码: 741-752
ISSN:0020-7179
年代: 1990
DOI:10.1080/00207179008934095
出版商: Taylor & Francis Group
数据来源: Taylor
摘要:
A simple feedback controller methodology is presented that allows for exact tracking of the sinusoidal input signals and rejection of the sinusoidal disturbances in a closed loop control system. The control method is motivated by a mathematical inequality that expresses the tracking and disturbance rejection requirements for a closed loop system. The exact tracking of the input command at a particular frequency requires an infinite loop gain for the system at the frequency of the in put command. A second order undamped transfer function is cascaded to each input channel to increase the loop transfer function gain at the frequency of the input command. A feedback controller is then designed via the LQG/LTR method to stabilize the system while the loop gain remains large at the frequency of the input. The method is experimentally verified on a single axis servo system and extended to multivariable systems.
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