Study of Practical Observer for Semi-active Suspensions

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  • セミアクティブサスペンションにおける実用的な状態推定の検討
  • セミアクティブサスペンション ニ オケル ジツヨウテキ ナ ジョウタイ スイテイ ノ ケントウ

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The study described in this paper aim to further enhance the estimation accuracy of the suspension stroke velocity using the vertical acceleration sensor on the sprung mass. The effectiveness has been already confirmed that the observer model is included the nonlinear characteristic of the semi-active damper and the observer feedback gain is scheduled by previous studies. However, the observer can not estimate high frequency over the body resonance point. To solve this problem, in this paper the observer is also included the hysteresis of the damping force. The effectiveness is verified by carrying out simulations and experiments.

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