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Vibration control for pneumatic isolation table with feedforward control input
Author(s) -
Koike Masakazu,
Nakata Takumi,
Zhang Feifei,
Tahara Junichiro
Publication year - 2019
Publication title -
electrical engineering in japan
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.136
H-Index - 28
eISSN - 1520-6416
pISSN - 0424-7760
DOI - 10.1002/eej.23187
Subject(s) - feed forward , control theory (sociology) , vibration , vibration isolation , vibration control , offset (computer science) , table (database) , control system , displacement (psychology) , engineering , computer science , control engineering , control (management) , acoustics , physics , artificial intelligence , psychology , electrical engineering , psychotherapist , data mining , programming language
In this paper, we consider a vibration suppression problem for a pneumatic isolation table with on–off valves using the feedforward control input profile. In this system, it is possible to enhance the vibration suppression performance by adjusting the flow rate of air into and from air springs. However, there is a significant problem that a steady‐state deviation, namely an offset, for displacement of the table occurs. Therefore, we propose an efficient search method of the optimal feedforward control input profile, which provides high vibration suppression performance without a steady‐state deviation. A key idea is to update the control input profile to belong to a space where velocity of the table does not change.