Judder Suppression of Friction Transmission Device with <i>H</i><sub>∞</sub> Control

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  • <i>H</i><sub>∞</sub>制御を用いた摩擦伝達装置のジャダー抑制
  • H[∞]制御を用いた摩擦伝達装置のジャダー抑制
  • H[∞]セイギョ オ モチイタ マサツ デンタツ ソウチ ノ ジャダー ヨクセイ

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<p>Judder is well known as a vibration that occurs in a dry clutch. In order to maintain the ride quality and quietness of dry clutches, research on judder analysis and mechanical design to suppress judder is actively pursued. This paper describes the design and implementation of robust control techniques as an approach to suppressing judder during gear shifting in traction-controlled transmissions. This paper is concerned with transmissions that exhibit strongly nonlinear frictional characteristics that can only be approximated by higher order polynomials. Specifically, the coefficient of friction varies significantly nonlinearly with the rotational speed during gear shifting. In this paper, the controller is designed by expressing this nonlinear property as the uncertainty of the frequency. Simulation and bench test results are presented to validate the validity of such an approach. The results show that judder-free shifting is possible with the proposed approach. Furthermore, the requirements of three controllers are presented by analyzing the robust controllers.</p>

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