電動アクティブサスペンションにおけるプレビュー制御の検討(<小特集>TRANSLOG2009/J-RAIL2009)

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  • Study of Preview Control for Electric Active Suspension(<Special Issue>TRANSLOG2009/J-RAIL2009)
  • 電動アクティブサスペンションにおけるプレビュー制御の検討
  • デンドウ アクティブサスペンション ニ オケル プレビュー セイギョ ノ ケントウ

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A control method of active suspension system, called Preview Control, applying road-surface profile measured in advance, is advocated. However, it is difficult to detect accurate road-surface profile for practical application, because no sensor can detect road-surface profile directly in general. This problem is unavoidable for a non-contact laser displacement sensor installed on the automobile active suspension system. This paper proposes a new method to estimate road-surface profile by the full-order observer, which uses body vertical acceleration, suspension stroke, lateral acceleration, longitudinal acceleration, actuator angle, and relative distance between road-surface and laser displacement sensor. Moreover, this method is applied to an electric active suspension system, and then improvement of comfortability in riding and decrease of energy consumption are verified.

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