Position Observation for Proportional Solenoid Valves by Signal Injection

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• 作者：Tristan Braun^* ; ^{tbraun@htwg-konstanz.de" class="auth_mail" title="E-mail the corresponding author} ; Johannes Reuter^* ; ^{jreuter@htwg-konstanz.de" class="auth_mail" title="E-mail the corresponding author} ; Joachim Rudolph^** ; ^{j.rudolph@lsr.uni-saarland.de" class="auth_mail" title="E-mail the corresponding author}
• 关键词：Hydraulic Actuators ; Electromagnetic devices ; Magnetic Fields ; Observers ; Parameter Estimation
• 刊名：IFAC-PapersOnLine
• 出版年：2016
• 出版时间：2016
• 年：2016
• 卷：49
• 期：21
• 页码：74-79
• 全文大小：787 K

文摘

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.