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http://dx.doi.org/10.7839/ksfc.2019.16.2.059

Hydraulic Control System Using a Feedback Linearization Controller and Disturbance Observer - Sensitivity of System Parameters -  

Kim, Tae-hyung (Korea Aerospace Industries, Ltd.)
Lee, Ill-yeong (Department of Mechanical Design Engineering, Pukyong National University)
Jang, Ji-seong (Department of Mechanical System Engineering, Pukyong National University)
Publication Information
Journal of Drive and Control / v.16, no.2, 2019 , pp. 59-65 More about this Journal
Abstract
Hydraulic systems have severe nonlinearity inherently compared to other systems like electric control systems. Hence, precise modeling and analysis of the hydraulic control systems are not easy. In this study, the control performance of a hydraulic control system with a feedback linearization compensator and a disturbance observer was analyzed through experiments and numerical simulations. This study mainly focuses on the quantitative investigation of sensitivity on system uncertainties in the hydraulic control system. First, the sensitivity on the system uncertainty of the hydraulic control system with a Feedback Linearization - State Feedback Controller (FL-SFC) was quantitatively analyzed. In addition, the efficacy of a disturbance observer coupled with the FL-SFC for the hydraulic control system was verified in terms of overcoming the control performances deterioration owing to system uncertainty.
Keywords
Hydraulic Servo System; Feedback Linearization; Disturbance Observer; Parameters Sensitivity;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
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