TY - CPAPER U1 - Konferenzveröffentlichung A1 - Braun, Tristan A1 - Straußberger, Florian A1 - Reuter, Johannes T1 - State estimation for fast-switching solenoid valves BT - A study on practical nonlinear observers and new experimental results T2 - 20th International Conference on Methods and Models in Automation and Robotics (MMAR) : 24 - 27 Aug. 2015, Miedzyzdroje, Poland N2 - Knowing the position of the spool in a solenoid valve, without using costly position sensors, is of considerable interest in a lot of industrial applications. In this paper, the problem of position estimation based on state observers for fast-switching solenoids, with sole use of simple voltage and current measurements, is investigated. Due to the short spool traveling time in fast-switching valves, convergence of the observer errors has to be achieved very fast. Moreover, the observer has to be robust against modeling uncertainties and parameter variations. Therefore, different state observer approaches are investigated, and compared to each other regarding possible uncertainties. The investigation covers a High-Gain-Observer approach, a combined High-Gain Sliding-Mode-Observer approach, both based on extended linearization, and a nonlinear Sliding-Mode-Observer based on equivalent output injection. The results are discussed by means of numerical simulations for all approaches, and finally physical experiments on a valve-mock-up are thoroughly discussed for the nonlinear Sliding-Mode-Observer. KW - Valves KW - Linearisation techniques KW - Observers KW - Solenoids Y1 - 2015 SN - 978-1-4799-8701-6 SB - 978-1-4799-8701-6 U6 - https://doi.org/10.1109/MMAR.2015.7283990 DO - https://doi.org/10.1109/MMAR.2015.7283990 N1 - Volltextzugriff für Hochschulangehörige via Datenbank IEEE Xplore SP - 862 EP - 867 PB - IEEE ER -