电磁直驱变速系统的集成优化设计与跟随补偿控制研究

In order to meet the requirements of the rapid development of pure electric vehicle and the independent intellectual property of high efficiency transmission, an electromagnetic direct-drive transmission system with the characteristics of high efficiency and energy saving is presented in the project. The system uses electromagnetic linear actuator driving the servo synchronizer directly. It has the advantages of compact structure, fast response and high efficiency. Aiming to the urgent problems of the innovation transmission system, such as integration optimizing design, temperature rise suppression characteristics of electromagnetic linear actuator and the influence mechanism of shift control accuracy, the research methods of theoretical analysis, numerical simulation and experiment are adopted. The optimization design theory of electromagnetic direct-drive transmission system, the temperature rise mechanism of electromagnetic linear actuator and the influence rules of lattice resistance and specific surface energy of synchronous dual friction surfaces are deeply researched. In order to obtain the optimal mapping theory between structure parameters and design requirements of the innovation transmission system and the shift control methods with the temperature rise and friction coefficient following compensation, the models of kinetics, three-dimensional coupling and finite element analysis are built. And then, the combination researches of simulation and experiment will be completed. The results will improve the shifting quality and reliability of the direct-drive automatic transmission. In the last, the design theory and method of an innovation high efficiency transmission can be formed and the accuracy of the shift control strategy can be improved. This fundamental research will enrich and develop automotive transmission theory. It has an important signification for the technological advances of pure electric vehicle.

为满足纯电动汽车快速发展和高效变速器自主知识产权的需求，本项目提出一类高效节能的电磁直驱变速系统，使用高功率密度的电磁直线执行器直接驱动增力式同步器，具有结构紧凑、响应速度快和传动效率高等优点。针对此类新型变速系统在应用基础研究中急需解决的集成优化设计、电磁直线执行器温升特性和换挡控制精度的影响机理等关键问题，采用理论分析、数值模拟和试验相结合的方法，深入研究电磁直驱变速系统的优化设计理论、电磁直线执行器的温升机理，以及温度对同步器摩擦对偶面晶格阻力和比表面能的影响规律，建立相应的动力学、三维耦合和有限元分析模型并结合试验研究结果，寻求最优或较优的系统结构参数与设计要求间的映射理论，制定电磁直线执行器温升和同步器摩擦系数跟随补偿的换挡控制方法，提高直驱式自动变速系统的换挡品质和可靠性。最终形成一类新型高效变速器的设计理论与方法，对丰富汽车传动理论、推动纯电动汽车的技术进步有重要的科学意义。

针对纯电动汽车快速发展和高效变速器自主知识产权的需求，本项目提出并研究了一类高效节能的电磁直驱变速系统，具有结构紧凑、响应速度快和传动效率高等优点。针对此类新型变速系统在应用基础研究中急需解决的集成优化设计、电磁直线执行器温升特性和换挡控制精度的影响机理等关键问题，采用理论分析、数值模拟和试验相结合的方法，深入研究了电磁直驱变速系统的优化设计理论、电磁直线执行器的温升机理，以及温度对同步器摩擦对偶面晶格阻力和比表面能的影响规律，建立了相应的动力学、三维耦合和有限元分析模型并结合试验研究结果，优化设计了系统的结构参数，制定了电磁直线执行器温升和同步器摩擦系数跟随补偿的换挡控制方法，提高了直驱式自动变速系统的换挡品质和可靠性。最终形成了一类新型高效变速器的设计理论与方法，对丰富汽车传动理论、推动纯电动汽车的技术进步有重要的科学意义。. 该项目发表论文21篇（均标注基金号），其中SCI检索论文6篇。申请发明专利23件，其中已授权发明专利8件。依托该项目，项目负责人入选山东省青年科技人才托举工程、山东理工大学“双百人才”工程，首位获得山东省机械工业科技进步一等奖1项、山东省高等学校科学技术三等奖1项。该项目培养博士生和硕士生13人，其中博士生2人，1人获得山东理工大学优秀硕士学位论文。