磁気浮上搬送のためのホール素子を用いた2自由度位置推定(機械力学,計測,自動制御)

概要

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This study discusses the position estimation method of two dimensional position of a magnetically levitated body. Two Hall elements are installed in order to estimate both the horizontal and the vertical positions. Both the Hall voltages and the electric current signal are measured and the relationships among the levitation gaps, Hall voltages and the electric current are investigated. As the result, it is observed graphically that these relationships indicate the curved surfaces which are single-valued functions to the levitation gaps, and these curved surface are represented by explicit nonlinear functions of Hall voltages and the electric current. The estimation of both the horizontal and the vertical positions are performed by using these obtained explicit nonlinear functions, and its accuracy are validated experimentally.
2009-12-25