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Optimization Method for Powertrain Mounting Systems Considering the Errors in Inertia Properties Testing
HOU Wei-chun;WU Jie
2012, 32 (3):
121-124.
DOI: 10.3969/j.issn.1006-1355.2012.03.028
Generally, the inertia properties of a powertrain mounting system (PMS) are determined by measuring, and the measurement error is less than 3 %. The PMS frequency and decoupling ratio are closely related to the inertia properties, mount stiffness, and mount position, thus the actual PMS frequency and decoupling ratio will not be consistent with their designed values. In this paper, the inertia properties were described with uniformly distributed random variables, the mount stiffness parameters were selected as design variables, and a robust optimization method was presented in order to desensitize the PMS frequency and decoupling ratio to the inertia properties. The optimization results of a transversely mounted PMS show that the robustness of the frequency, decoupling ratio, and frequency separation can be effectively improved compared with that of the traditional deterministic optimization method.
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