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| 商用车动力总成-空调压缩机耦合系统建模与优化 |
| Modeling and Optimization of the Powertrain and Air Conditioning Compressor Coupling System for Commercial Vehicles |
| 投稿时间：2024-09-12 修订日期：2024-10-24 |
| DOI： |
| 中文关键词: 动力总成 空调压缩机 悬置系统 振动 耦合 优化 |
| 英文关键词:powertrain air conditioning compressor mounting system vibration coupling optimization |
| 基金项目:福建省中青年教师教育科研项目资助（JAT201061）；福建省交通运输科技项目（XY202305） |
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| 中文摘要: |
| 摘要：针对商用车动力总成和空调压缩机构成的耦合系统振动问题，建立了十二自由度（12-DOF）的多刚体振动耦合模型，推导了振动数学方程。建立了以最大化解耦率和各阶固有频率的合理配置为目标的优化模型，通过Active-set算法，对某设计案例的系统参数进行了优化。结果表明，与传统六自由度模型相比，十二自由度模型更好地体现了系统各刚体间的振动耦合效应，优化后各主振型方向的解耦率大幅提高，多刚体之间的耦合作用得到有效控制，显著改善了系统的振动特性。通过传递率的频域响应计算分析，进一步表明优化后系统在主要工作频段内的振动得到了有效控制。本文的研究为商用车多刚体振动耦合系统建模和设计提供参考。 |
| 英文摘要: |
| Abstract：To address the vibration issues in the coupled system of commercial vehicle powertrains and air conditioning compressors, a twelve-degree-of-freedom (12-DOF) multi-rigid-body vibration coupling model was established, and the corresponding mathematical vibration equations were derived. An optimization model was formulated with the goal of maximizing the decoupling rate and rationally configuring the natural frequencies of each mode. Using the Active-set algorithm, the system parameters for a specific design case were optimized. The results show that compared to the traditional 6-DOF model, the 12-DOF model better captures the vibration coupling effects among the rigid bodies in the system. After optimization, the decoupling rate in the principal vibration modes increased significantly, effectively controlling the coupling effects between the rigid bodies and substantially improving the system’s vibration characteristics. Furthermore, the frequency domain response analysis of the transmissibility demonstrates that the optimized system effectively controls vibrations within the main operating frequency range. This study provides a reference for modeling and designing multi-rigid-body vibration coupling systems in commercial vehicles. |
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