Understanding MTF Additive Effects on Synchroniser Friction

Brown, Gerald M.; Walker, G.; Friend, C. R. L.; Barton, Wayne; Rose, Arnold M.; O’Connor, Brian; Huston, Michael E.; McFadden, Christopher F.; Higuchi, Y.

doi:10.4271/2011-01-2121

Cited by 5 publications

(1 citation statement)

References 3 publications

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“…The results show that the friction coefficient between the friction cones of synchronizer is related to temperature, load, and speed difference between the synchronizer ring and target gear ring after the material and lubrication conditions of the synchronizer's friction cones are determined [15,[24][25][26][27]. The premise of formulating the friction coefficient compensation control strategy was to obtain the quantitative relationship between friction coefficient and its influencing factors in the synchronization process.…”

Section: Quantitative Relationship Between the Friction Coefficient Amentioning

confidence: 99%

Friction Coefficient Compensation Control in Synchronizer Synchronization Process for Transmission

Yuan

et al. 2019

Applied Sciences

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In the synchronization process of a synchronizer, the friction coefficient of the friction cone is changed because of friction heat. In this paper, the influence of a changing friction coefficient on shift quality was analyzed. The quantitative relationship between friction coefficient and its influencing factors was studied through a synchronizer synchronization process test bench. Based on the quantitative analysis and an optimal shift force control method, a compensation control strategy for friction coefficient was established. Moreover, the effectiveness of the compensation control was verified through simulation and experiment. The results showed that the friction coefficient was maintained near the expected value of 0.08 after the compensation control, the shifting speed difference the synchronous time was shortened by nearly 0.12 s, and the sliding friction was reduced by 4.64 J under the experimental conditions. The analysis and compensation of the friction coefficient provide a theoretical reference for improving shift quality.

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Section: Quantitative Relationship Between the Friction Coefficient Amentioning

confidence: 99%

Friction Coefficient Compensation Control in Synchronizer Synchronization Process for Transmission

Yuan

et al. 2019

Applied Sciences

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Modeling and analysis of the synchronization process of synchronizer

Chen,

Ding,

Zhao

2024

Forsch Ingenieurwes

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The role of dynamic friction in the appearance of periodic oscillations in mechanical systems

González-Carbajal,

García-Vallejo,

Domínguez

et al. 2024

Nonlinear Dyn

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This article investigates the appearance of periodic mechanical oscillations associated with the transition between static and dynamic friction regimes. The study employs a mechanical system with one degree of freedom and a friction model recently proposed by Brown and McPhee, whose continuity and differentiability properties make it particularly appropriate for an analytical treatment of the equations. A bifurcation study of the system, including stability analysis, transformation to normal form and numerical continuation techniques, reveals that stable periodic orbits can be created either by a supercritical Hopf bifurcation or by a saddle-node bifurcation of limit cycles. The influence of all system parameters on the appearance of periodic oscillations is investigated in detail. In particular, the effect of the friction model parameters (static-to-dynamic friction ratio and transition speed between the static and dynamic regimes) on the bifurcation behavior of the system is addressed.

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Understanding MTF Additive Effects on Synchroniser Friction

Cited by 5 publications

References 3 publications

Friction Coefficient Compensation Control in Synchronizer Synchronization Process for Transmission

Friction Coefficient Compensation Control in Synchronizer Synchronization Process for Transmission

Modeling and analysis of the synchronization process of synchronizer

The role of dynamic friction in the appearance of periodic oscillations in mechanical systems

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