APPLICATION OF EXTENDED KALMAN FILTER IN A METERING POPPET VALVE SYSTEM
Keywords:
Extended Kalman Filter, metering poppet valve, robustnessAbstract
This work focuses on an accurate Extended Kalman Filter (EKF) estimator, which is applied to a forced-feedback metering poppet valve system (FFMPVS). The EKF estimator is used to estimate the position and velocity of the main poppet valve, position and velocity of the pilot poppet valve and pressures within the pilot stage of the valve. The EKF estimator takes advantage of its recursive optimal state estimation to estimate the states of this metering poppet valve by using one pressure signal measurement. The results from the EKF are compared with the simulation results from the model and also compared with the states which can be measured from the physical system set up in the lab. It is shown that the EKF estimator tracks the states accurately for both the steady-state and transient performance. The EKF estimator has robustness to parameter variations. It is shown specifically that the EKF estimator has robustness to an example of model uncertainty, variations in the spring stiffness parameter.
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References
Acarnley, P. P. and AI-Tayie, J. K. 1997. Estimation
of speed and armature temperature in a brushed DC
drive using the extended Kalman filter. Electric
Power Application, IEE Proceedings, Vol. 144, Issue
, pp. 13-20.
An, L. and Sepehri, N. 2005. Hydraulic Actuator
Leakage Fault Detection Using Extended Kalman
Filter. International Journal of Fluid Power, Vol. 6,
pp. 41-51.
Chinniah, Y., Burton, R. and Habibi, S. 2003. Viscous
Damping Coefficient and Effective Bulk
Modulus Estimation in a High Performance Hydrostatic
Actuation System using Extended Kalman
Filter. International Journal of Fluid Power, Vol. 4,
No. 3, pp. 27-34.
Fales, R. and Li, C. 2008. Experimental Evaluation of
a Metering Poppet Valve. Bath/ASME Symposium
on Fluid Power & Motion Control, Bath, UK.
Manring, N. D. 2005. Hydraulic Control Systems.
John Wiley and Sons, New Jersey, pp. 224-228.
Muller, M. and Fales, R. 2008. Design and Analysis of
a Two-Stage Poppet Valve for Flow Control. International
Journal of Fluid Power, Vol. 9, No. 1, pp.
-26.
Walchko, K. J., Novick, D. and Nechyba, M. C. 2003.
Development of a Sliding Mode Control System
with Extended Kalman Filter Estimation for Subjugator.
Florida Conference on Recent Advances in
Robotics, FAU, Dania Beach, FL.
Zhuang Xu. and Rahman, M. F. 2003. An Extended
Kalman Filter Observer for the Direct Torques Controlled
Interior Permanent Magnet Synchronous
Motor Drive. Power Electronics and Drive Systems,
The Fifth International Conference. Vol. 1, pp. 686-
