【作者】 程飞；

【导师】 过学迅；

【作者基本信息】 武汉理工大学 ， 车辆工程， 2006， 硕士

【摘要】 随着科学技术的发展和人民物质生活水平的提高，汽车变得也越来越普及，逐渐走进普通人的家庭。自动变速器作为汽车中一个非常重要的部件，对汽车的动力性，经济性，排放性有着重要的影响。随着家庭轿车的普及，非专业驾驶员的不断涌现，自动变速器为他们的便利驾驶及安全驾驶提供了保障，因而，对自动变速器的研究也显得越来越重要。 在液力自动变速器的研究丌发过程中，控制系统的丌发是核心问题。离线仿真和实时仿真为开发出实际可行的液力自动变速器控制系统提供了方法、数据、算法支持，有利于控制系统的最终实现。 本文结合国家863电动汽车重大专项及液力自动变速器试验台的研制，以赛欧AF13-4液力自动变速器为研究原型，利用液力变矩器原始特性的台架实验数据，绘制了其原始特性曲线；结合液力变矩器的闭锁和滑摩控制特点，确定了液力变矩器的闭锁和滑摩区域，采用了非线性PID控制策略，利用Matlab／Simulink建立了仿真模型，并给出了仿真结果；利用发动机部分负荷特性，液力变矩器的原始特性，车辆驱动方程及车辆油耗特性等相关曲线，并结合赛欧AF13-4的换档规律特性，制定了本研究中液力自动变速器的换档曲线；利用模糊控制技术，BP神经网络、RBF神经网络及有限状态机理论分别实现了液力自动变速器换档控制；Matlab／Simulink软件的仿真结果表明：所实现的换档控制均能正确的实现车辆的自动换档；借助dSPACE实时仿真平台及其它物理部件，建立了整车快速原形开发实时仿真控制模型；实时仿真结果表明：所建立的实时仿真模型能很好的展现车辆动态运行过程，具有很高的研究价值，为进一步的硬件在环仿真研究打下了坚实的基础。更多还原

【Abstract】 With the development of science and technology and the improvement of people’s material life conditions, the automobile becomes more and more universalized and also is accepted by the ordinary family gradually. However, the automatic transmission is a very important part of the automobile and has an important influence to economic fuel, driving and emission of it. Along with the popularization of family car, non-professional driver’s constantly emerges in large numbers, and the automatic transmission is providing the guarantee for their convenient driving and safety, thus research on the automatic transmission also becomes more and more important.The development of control is the nucleus question in the research and development of automatic transmission. Provide method, datas and algorithms supported from thread simulation and real time simulation are helpful for developing out the real feasible automatic transmission control and are favour of finally realizing the control.On the basis of the National High-Tech Research and Development Program of China and the development of the automatic transmission test-bed, regarding SaiOu AF13-4 automatic transmission as the research model, this paper drew the original response cures using the pallet experimental datas of hydraulic torque converter. And combining the shutting and slippery pattern control characteristic of hydraulic torque converter, the paper also defined the shutting and slippery pattern region of it, and adopted nonlinearity PID’s control tactics, and used Matlab / Simulink to build the simulation model, and gave out the simulation result. Using part of load specific property of the engine, original specific property of hydraulic torque converter, the curves related to vehicle drive equation and vehicle oil consumption specific property etc, and considering the shift law of SaiOu AF13-4, laid down the shift law curves of it. The fuzzy control, BP neural network, RBF neural network and Finite State Machine were discussed to realize respectively the shift control of hydraulic automatic transmission. The result coming from the simulation of the Matlab /Simulink indicated: the designed control can realize vehicle’s shift correctly.更多还原