Position Observation for Proportional Solenoid Valves by Signal Injection

Abstract: The method of signal injection is investigated for position estimation of proportional solenoid valves. A simple observer is proposed to estimate a position-dependent parameter, i.e. the eddy current resistance, from which the position is calculated analytically. Therefore, the relationship of position and impedance in the case of sinusoidal excitation is accurately described by consideration of classical electrodynamics. The observer approach is compared with a standard identification method, and evaluated by practical experiments on an off-the-shelf proportional solenoid valve.

[1]  Eric H. Maslen,et al.  Self–Sensing Magnetic Bearings , 2009 .

[2]  Tamás Kovácsházy,et al.  Parameter Estimation in Linear Electromagnetic Devices , 2015, IEEE Transactions on Industrial Electronics.

[3]  Andreas Kugi,et al.  A novel robust position estimator for self-sensing magnetic levitation systems based on least squares identification , 2011 .

[4]  H.-R. Trankler,et al.  Sensorless position control of electromagnetic linear actuator , 2004, Proceedings of the 21st IEEE Instrumentation and Measurement Technology Conference (IEEE Cat. No.04CH37510).

[5]  Norbert C. Cheung,et al.  Position estimation in solenoid actuators , 1995, IAS '95. Conference Record of the 1995 IEEE Industry Applications Conference Thirtieth IAS Annual Meeting.

[6]  Philippe Martin,et al.  Signal injection and averaging for position estimation of Permanent-Magnet Synchronous Motors , 2012, 2012 IEEE 51st IEEE Conference on Decision and Control (CDC).

[7]  G. van Schoor,et al.  Self-sensing for electromagnetic actuators. Part I: A coupled reluctance network model approach , 2011 .

[8]  Yves Perriard,et al.  Sensorless position detection of a linear actuator using the resonance frequency , 2009, 2009 International Conference on Electrical Machines and Systems.

[9]  G. van Schoor,et al.  Evaluation of demodulation algorithms for robust self-sensing active magnetic bearings , 2013 .

[10]  Shang-Teh Wu,et al.  Self-sensing of a solenoid valve via phase detection , 2009, 2009 IEEE/ASME International Conference on Advanced Intelligent Mechatronics.