Mixed sensitivity H∞ controller design for variable-speed pump-controlled motor system

This paper focuses on constant speed control of variable speed pump controlled motor system. The nonlinear model of pump controlled motor system is derived and its parametric perturbations are taken into consideration. To decouple pump speed variation from H ∞ controller, a closed loop flow rate con...

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Bibliographic Details
Published in2014 IEEE International Conference on Mechatronics and Automation pp. 503 - 508
Main Authors Xiaolin Li, Xiangzhou Wang, Yu Wang
Format Conference Proceeding
LanguageEnglish
Published IEEE 01.08.2014
Subjects
Bang-Bang control
Control systems
Equations
H ∞ control
mixed sensitivity
Observers
pump controlled motor
Robustness
Sensitivity
Torque
Uncertainty
variable-speed
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Summary:This paper focuses on constant speed control of variable speed pump controlled motor system. The nonlinear model of pump controlled motor system is derived and its parametric perturbations are taken into consideration. To decouple pump speed variation from H ∞ controller, a closed loop flow rate controller of hydraulic pump based on Bang-Bang control and low pass filter is proposed. Mixed sensitivity H ∞ controller with load torque observer is achieved to reduce maximum speed error and settling time of hydraulic motor. Simulation results show that the proposed control scheme is superior to PID controller.
ISBN:1479939781
9781479939787
ISSN:2152-7431
2152-744X
DOI:10.1109/ICMA.2014.6885749