In this paper, a method is developed to estimate the parameters and motion of a moving coil actuator in the digital valves of Digital Displacement machines. The parameter estimation is carried out using three simple distinctive schemes from which certain electrical and magnetic parameters may be estimated. The parameter estimation method uses simple adaptation laws to update the moving coil actuator parameters used to estimate the valve plunger motion in an observer. The observer estimates the velocity using the back electro-motive force (back-emf) induced when moving the coil based on current and voltage measurements, but without any mechanical sensors. The valve movement of digital valves is confined by mechanical end-stops enabling estimating the valve position through integration of the estimated velocity relatively accurate. The observer depends on precise knowledge of the electrical dynamics to accurately estimate the valve motion. When the parameters are converged through adaptation the observer proves to be capable of tracking the valve motion relatively accurate, however some deviation occur at the mechanical end-stops of the valve. The parameter estimation method and the observer is implemented and tested off-line when using experimental data obtained from a newly developed digi-valve prototype which uses a moving coil actuator as the force producing element.
Skip Nav Destination
9th FPNI Ph.D. Symposium on Fluid Power
October 26–28, 2016
Florianópolis, SC, Brazil
Conference Sponsors:
- Fluid Power Net International (FPNI)
- Federal University of Santa Catarina (UFSC), Brazil
ISBN:
978-0-7918-5047-3
PROCEEDINGS PAPER
A Motion Observer With On-Line Parameter Estimation for Moving-Coil Based Digital Valves in Digital Displacement Machines
Christian Noergaard,
Christian Noergaard
Aalborg University, Aalborg East, Denmark
Search for other works by this author on:
Michael M. Bech,
Michael M. Bech
Aalborg University, Aalborg East, Denmark
Search for other works by this author on:
Daniel B. Roemer
Daniel B. Roemer
Aalborg University, Aalborg East, Denmark
Search for other works by this author on:
Christian Noergaard
Aalborg University, Aalborg East, Denmark
Michael M. Bech
Aalborg University, Aalborg East, Denmark
Daniel B. Roemer
Aalborg University, Aalborg East, Denmark
Paper No:
FPNI2016-1543, V001T01A029; 10 pages
Published Online:
November 30, 2016
Citation
Noergaard, C, Bech, MM, & Roemer, DB. "A Motion Observer With On-Line Parameter Estimation for Moving-Coil Based Digital Valves in Digital Displacement Machines." Proceedings of the 9th FPNI Ph.D. Symposium on Fluid Power. 9th FPNI Ph.D. Symposium on Fluid Power. Florianópolis, SC, Brazil. October 26–28, 2016. V001T01A029. ASME. https://doi.org/10.1115/FPNI2016-1543
Download citation file:
14
Views
Related Proceedings Papers
Related Articles
Adaptive Continuously Variable Compression Braking Control for Heavy-Duty Vehicles
J. Dyn. Sys., Meas., Control (September,2002)
A High Performance Pneumatic Force Actuator System: Part I—Nonlinear Mathematical Model
J. Dyn. Sys., Meas., Control (September,2000)
Control-Oriented Model for Camless Intake Process—Part I
J. Dyn. Sys., Meas., Control (March,2000)
Related Chapters
K-Models Clustering, a Generalization of K-Means Clustering
Intelligent Engineering Systems through Artificial Neural Networks, Volume 20
Smartphone and Cloud Computing-Based Autonomous and Pervasive Acquisition of Context-Rich Knowledge
International Conference on Mechanical and Electrical Technology, 3rd, (ICMET-China 2011), Volumes 1–3
Research on the Giant Magnetostrictive Flow Control Valve
International Conference on Instrumentation, Measurement, Circuits and Systems (ICIMCS 2011)