Abstract
| Original language | English |
|---|---|
| Title of host publication | Proceedings of BATH/ASME 2016 Symposium on Fluid Power and Motion Control |
| Number of pages | 9 |
| Place of Publication | ASME Digital Collection |
| Publisher | American Society of Mechanical Engineers |
| Publication date | Sep 2016 |
| Article number | FPMC2016-1789 |
| ISBN (Electronic) | 978-0-7918-5006-0 |
| DOIs | |
| Publication status | Published - Sep 2016 |
| Event | BATH/ASME 2016 Symposium on Fluid Power and Motion Control - Bath, United Kingdom Duration: 7 Sep 2016 → 9 Sep 2016 http://www.bath.ac.uk/mech-eng/research/ptmc/symposium |
Conference
| Conference | BATH/ASME 2016 Symposium on Fluid Power and Motion Control |
|---|---|
| Country | United Kingdom |
| City | Bath |
| Period | 07/09/2016 → 09/09/2016 |
| Internet address |
Fingerprint
Keywords
- Actuators
- Valves
Cite this
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A Simple and Robust Sliding Mode Velocity Observer for Moving Coil Actuators in Digital Hydraulic Valves. / Nørgård, Christian; Schmidt, Lasse; Bech, Michael Møller.
Proceedings of BATH/ASME 2016 Symposium on Fluid Power and Motion Control. ASME Digital Collection : American Society of Mechanical Engineers, 2016. FPMC2016-1789.Research output: Contribution to book/anthology/report/conference proceeding › Article in proceeding › Research › peer-review
TY - GEN
T1 - A Simple and Robust Sliding Mode Velocity Observer for Moving Coil Actuators in Digital Hydraulic Valves
AU - Nørgård, Christian
AU - Schmidt, Lasse
AU - Bech, Michael Møller
PY - 2016/9
Y1 - 2016/9
N2 - This paper focuses on estimating the velocity and position of fast switching digital hydraulic valves actuated by electromagnetic moving coil actuators, based on measurements of the coil current and voltage. The velocity is estimated by a simple first-order sliding mode observer architecture and the position is estimated by integrating the estimated velocity. The binary operation of digi-valves enables limiting and resetting the position estimate since the moving member is switched between the mechanical end-stops of the valve. This enables accurate tracking since drifting effects due to measurement noise and integration of errors in the velocity estimate may be circumvented. The proposed observer architecture is presented along with stability proofs and initial experimental results. To reveal the optimal observer performance, an optimization of the observer parameters is carried out. Subsequently, the found observer parameters are perturbed to assess the robustness of the observer to parameter estimation errors. The proposed observer demonstrates accurate tracking of the valve movement when using experimentally obtained data from a moving coil actuated digi-valve prototype and observer parameters estimates in the vicinity of the optimized parameter values.
AB - This paper focuses on estimating the velocity and position of fast switching digital hydraulic valves actuated by electromagnetic moving coil actuators, based on measurements of the coil current and voltage. The velocity is estimated by a simple first-order sliding mode observer architecture and the position is estimated by integrating the estimated velocity. The binary operation of digi-valves enables limiting and resetting the position estimate since the moving member is switched between the mechanical end-stops of the valve. This enables accurate tracking since drifting effects due to measurement noise and integration of errors in the velocity estimate may be circumvented. The proposed observer architecture is presented along with stability proofs and initial experimental results. To reveal the optimal observer performance, an optimization of the observer parameters is carried out. Subsequently, the found observer parameters are perturbed to assess the robustness of the observer to parameter estimation errors. The proposed observer demonstrates accurate tracking of the valve movement when using experimentally obtained data from a moving coil actuated digi-valve prototype and observer parameters estimates in the vicinity of the optimized parameter values.
KW - Actuators
KW - Valves
U2 - 10.1115/FPMC2016-1789
DO - 10.1115/FPMC2016-1789
M3 - Article in proceeding
BT - Proceedings of BATH/ASME 2016 Symposium on Fluid Power and Motion Control
PB - American Society of Mechanical Engineers
CY - ASME Digital Collection
ER -