Optimal Design of Spring Characteristics of Damper for Subharmonic Vibration in Automatic Transmission Powertrain
Optimal Design of Spring Characteristics of Damper for Subharmonic Vibration in Automatic Transmission Powertrain
复制标题
自动变速器动力总成次谐波振动减振器弹簧特性优化设计
DOI：
10.1088/1742-6596/744/1/012208
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发表时间：
2016
期刊：
影响因子：
--
通讯作者：
Kenichiro Matsuzaki et al.
中科院分区：
文献类型：
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作者：
Takashi Nakae;Takahiro Ryu;Kenichiro Matsuzaki et al.
在变矩器中，锁止离合器的阻尼器用于有效地吸收扭转振动。阻尼器的设计使用分段线性弹簧与三个刚度级。然而，由于非线性，在分段线性恢复转矩特性中的切换点附近发生了被称为1/2阶次谐波振动的非线性振动。在本研究中，我们分析了亚谐振动的减振。这里使用的模型包括变矩器、齿轮系和差速齿轮。阻尼器由分段线性弹簧的非线性旋转弹簧来模拟。重点研究了阻尼器弹簧特性的优化设计，以抑制次谐波振动。提出了一种具有五个刚度级的分段线性弹簧，并研究了开关点间距对次谐波振动的影响。分析结果表明，通过设计一个具有五个刚度级的阻尼器，使相邻弹簧之间的弹簧常数比较小，可以抑制亚谐振动。开关点之间的距离必须设计得足够大，使得系统的主频率分量的幅度不会到达相邻的开关点。
In the torque converter, the damper of the lock-up clutch is used to effectively absorb the torsional vibration. The damper is designed using a piecewise-linear spring with three stiffness stages. However, a nonlinear vibration, referred to as a subharmonic vibration of order 1/2, occurred around the switching point in the piecewise-linear restoring torque characteristics because of the nonlinearity. In the present study, we analyze vibration reduction for subharmonic vibration. The model used herein includes the torque converter, the gear train, and the differential gear. The damper is modeled by a nonlinear rotational spring of the piecewise-linear spring. We focus on the optimum design of the spring characteristics of the damper in order to suppress the subharmonic vibration. A piecewise-linear spring with five stiffness stages is proposed, and the effect of the distance between switching points on the subharmonic vibration is investigated. The results of our analysis indicate that the subharmonic vibration can be suppressed by designing a damper with five stiffness stages to have a small spring constant ratio between the neighboring springs. The distances between switching points must be designed to be large enough that the amplitude of the main frequency component of the systems does not reach the neighboring switching point.