UKFによるセルフセンシング磁気浮上系の磁気飽和に対する補償

カテゴリ: 論文誌(論文単位)

グループ名: 【D】産業応用部門

発行日: 2015/05/01

タイトル(英語): Unscented Kalman Filtering for Self-Sensing Magnetic Levitation against Magnetic Saturation

著者名: 松田　光平（九州工業大学大学院工学府），坂本　哲三（九州工業大学大学院工学研究院）

著者名(英語): Kohei Matsuda (Graduate School of Engineering, Graduate School, Kyushu Institute of Technology), Tetsuzo Sakamoto (Facaulty of Engineering, Graduate School, Kyushu Institute of Technology)

キーワード: セルフセンシング，センサレス，吸引形磁気浮上系，磁気飽和，位置推定　　self-sensing，sensor less，magnetic levitation，magnetic saturation，position estimation，unscented Kalman filter

要約(英語): This paper investigates the magnetic saturation problem of self-sensing electromagnetic levitation system and presents a novel self-sensing scheme. The proposed approach employs a demodulation technique. By superimposing a high frequency voltage, the resulting electromagnet coil currents have ripples that can be used for gap sensing. This paper shows that the gap length is not uniquely estimated when using only the relation between the ripple, the control currents and the gap. The constraint conditions are to be determined to solve the problem. The proposed approach utilizes the dynamical motion model of the electromagnetic levitation system to uniquely identify the gap. Introducing the system behavior dynamics, the gap can be exactly estimated. To incorporate the system model with the gap sensing algorithm, a nonlinear filtering methodology is employed. The proposed estimator is demonstrated by the experiments. The results show that it is possible to address magnetic saturation with the proposed gap sensing scheme. The estimator has a good accuracy in a wider gap range compared to the conventional methods.

本誌: 電気学会論文誌D（産業応用部門誌） Vol.135 No.5 （2015）

本誌掲載ページ: 556-562 p

原稿種別: 論文／日本語

電子版へのリンク: https://www.jstage.jst.go.jp/article/ieejias/135/5/135_556/_article/-char/ja/