A Simple and Robust Sliding Mode Velocity Observer for Moving Coil Actuators in Digital Hydraulic Valves

Bidragets oversatte titel: En simpel og robust Sliding Mode hastigheds observatør for bevægelig spole aktuatorer i digitale hydrauliske ventiler

Christian Nørgård, Lasse Schmidt, Michael Møller Bech

Publikation: Bidrag til bog/antologi/rapport/konference proceedingKonferenceartikel i proceedingForskningpeer review

1 Citationer (Scopus)

Abstract

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.
Bidragets oversatte titelEn simpel og robust Sliding Mode hastigheds observatør for bevægelig spole aktuatorer i digitale hydrauliske ventiler
OriginalsprogEngelsk
TitelProceedings of BATH/ASME 2016 Symposium on Fluid Power and Motion Control
Antal sider9
UdgivelsesstedASME Digital Collection
ForlagAmerican Society of Mechanical Engineers
Publikationsdatosep. 2016
ArtikelnummerFPMC2016-1789
ISBN (Elektronisk)978-0-7918-5006-0
DOI
StatusUdgivet - sep. 2016
Begivenhed BATH/ASME 2016 Symposium on Fluid Power and Motion Control - Bath, Storbritannien
Varighed: 7 sep. 20169 sep. 2016
http://www.bath.ac.uk/mech-eng/research/ptmc/symposium

Konference

Konference BATH/ASME 2016 Symposium on Fluid Power and Motion Control
Land/OmrådeStorbritannien
ByBath
Periode07/09/201609/09/2016
Internetadresse

Fingeraftryk

Dyk ned i forskningsemnerne om 'En simpel og robust Sliding Mode hastigheds observatør for bevægelig spole aktuatorer i digitale hydrauliske ventiler'. Sammen danner de et unikt fingeraftryk.

Citationsformater