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Observer Design for Self-Sensing of Solenoid Actuators With Application to Soft Landing

  • A constructive nonlinear observer design for self-sensing of digital (ON/OFF) single coil electromagnetic actuators is studied. Self-sensing in this context means that solely the available energizing signals, i.e., coil current and driving voltage are used to estimate the position and velocity trajectories of the moving plunger. A nonlinear sliding mode observer is considered, where the stability of the reduced error dynamics is analyzed by the equivalent control method. No simplifications are made regarding magnetic saturation and eddy currents in the underlying dynamical model. The observer gains are constructed by taking into account some generic properties of the systems nonlinearities. Two possible choices of the observer gains are discussed. Furthermore, an observer-based tracking control scheme to achieve sensorless soft landing is considered and its closed-loop stability is studied. Experimental results for observer-based soft landing of a fast-switching solenoid valve under dry conditions are presented to demonstrate the usefulness of the approach.

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Metadaten
Author:Tristan BraunORCiD, Johannes ReuterORCiD, Joachim RudolphORCiD
DOI:https://doi.org/10.1109/TCST.2018.2821656
ISSN:1558-0865
ISSN:1063-6536
Parent Title (English):IEEE Transactions on Control Systems Technology
Document Type:Article
Language:English
Year of Publication:2018
Release Date:2019/01/15
Tag:Observers; Eddy currents; Actuators; Valves; Solenoids; Stability analysis; Integrated circuit modeling
Issue:Published online: 10 Apr 2018
Page Number:8
Note:
Volltextzugriff für Angehörige der Hochschule Konstanz via IEEE Xplore möglich.
Institutes:Institut für Systemdynamik - ISD
Relevance:Peer reviewed Publikation in Master Journal List
Open Access?:Nein
Licence (German):License LogoUrheberrechtlich geschützt