Dynamics of Active Magnetic Thrust Bearings

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概要

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• A linear model considering the effect of eddy currents is shown to be useful for the analysis of the dynamics of active magnetic thrust bearings in which electromagnet cores are composed of solid steel. The dynamics of the magnetic control force are modeled by the first-order time-lag system with unknown parameters : gain and time constant. The parameters are estimated from experimental results that indicate the static relation between the coil current and the magnetic control force, and the frequency response of magnetic flux for an input signal to a power amplifier. The effect of eddy currents on the dynamics is confirmed by the frequency characteristlcs of magnetic flux for the coil current. Model simulations with estimated parameters are compared with experimental results, and good agreement is obtained in frequency response in a linear range and in impulse responses with rotor displacements smaller than half the air gap.

• 一般社団法人日本機械学会の論文
• 1991-09-15

著者

• Fukata Satoru

  Department Of Industrial Design Kyushu Institute Of Design

• Kuga Makoto

  Nagasaki Research & Development Center Mitsubishi Heavy Industries Ltd.

• Fukata Satoru

  Department Of Mechanical Engineering Kyushu University

• Shimomachi Takashi

  Nagasaki University

• KOUYA Yoshinori

  Faculty of Education, Saga University

• MIZUMACHI Yutaka

  Matsuura Power Station, Kyushu Power Electric Inc.

• Mizumachi Yutaka

  Matsuura Power Station Kyushu Power Electric Inc.

関連論文

• Influence of glucocorticoid on bone in 3-, 6-, and 12-month-old rats as determined by bone mass and histomorphometry
• ANALYSIS OF A TWO-DIMENSIONAL PERMANENT-MAGNETIC PASSIVE DAMPER
• Dynamics of Active Magnetic Thrust Bearings
• Characteristics of Magnetic Bearings Biased with Permanent Magnets in the Stator
• A Frequency-Domain Model of Electromagnetic Actuators Composed of Solid Iron Cores

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