Event based Kalman filter observer for rotary high speed on/off valve

Meng Wang, Perry Y Li

Research output: Chapter in Book/Report/Conference proceedingConference contribution

3 Scopus citations


A novel hydraulic rotary self-spinning high speed on/off valve is being developed to enable hydraulic systems to be controlled in a more efficient throttle-less manner via pulse-width-modulation (PWM). The valve is designed to operate at a spool frequency of 20Hz to 40Hz. A coarse non-contacting optical encoder is proposed to measure the angular position of the valve spool. Measurement events in the form of encoder count changes are obtained at irregular times and infrequently. An event-based Kalman filter is developed to improve on the resolution and to provide continuous estimation of the spool angular position and velocity. Simulation and experimental results show that the event based Kalman filter can provide accurate continuous estimation for both spool angular position and velocity.

Original languageEnglish (US)
Title of host publication2008 American Control Conference, ACC
Number of pages6
StatePublished - 2008
Event2008 American Control Conference, ACC - Seattle, WA, United States
Duration: Jun 11 2008Jun 13 2008

Publication series

NameProceedings of the American Control Conference
ISSN (Print)0743-1619


Other2008 American Control Conference, ACC
Country/TerritoryUnited States
CitySeattle, WA


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