基于AMESim的静液传动车辆驱动系统控制及仿真

  本文关键词：基于AMESim的静液传动车辆驱动系统控制及仿真，，由笔耕文化传播整理发布。

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国内图书分类号:U463.22 学校代码:10213 国际图书分类号:629 密级:公开硕士学位论文基于AMESim的静液传动车辆驱动系统控制及仿真硕士研究生:陈娟娟导 师:刘涛副教授申请学位:工学硕士学科:车辆工程所在单位:汽车工程学院答辩日期:2010年6月授予学位单位:哈尔滨工业大学Classified Index: U463.22 University Code: 10213 U.D.C: 629 Security: Open Dissertation for the Master’s Degree in Engineering CONTROL AND SIMULATION ABOUT DRIVING SYSTEM OF HYDROSTATIC TRANSMISSION VEHICLE BASED ON AMESim Candidate:Chen Juanjuan Supervisor:Associate Prof. Liu Tao Academic Degree Applied for:Master of Engineering Speciality:Vehicle Engineering Affiliation:School of Automobile Engineering Date of Defence:June, 2010 Degree-Conferring-Institution:Harbin Institute of Technology 哈尔滨工业大学工学硕士学位论文-I- 摘要静液传动系统可以在较宽的转速范围内实现车辆可控的无级变速,能够以较小的体积和重量传递较大的功率,运行成本低,在车辆行驶驱动系统中得到了广泛应用。但该系统是一类典型的非线性、时变性的高阶系统,车辆使用工况复杂、负载变化大,使系统的动态性能随负载变化而变化,而且变化的动态性能也使整个动力传动系统效率降低,耗油大,因此迫切需要采用先进的控制技术来提高系统性能。本文概述了静液传动车辆驱动系统近年的发展现状,并就静液传动系统结构及原理、变量泵-定量马达调速系统、泵排量控制机构、发动机的性能评价指标以及发动机-变量泵功率匹配等相关问题进行了详细的研究分析。重点研究了泵控马达闭式回路调速系统,基于液压仿真软件AMESim建立相应的动态仿真模型,且对影响系统动态性能的因素进行了仿真分析。分析表明需要设计合适的控制策略,从而提高调速系统的动态性能。首先采用常规PID方法进行速度控制仿真,结果表明PID只能利用一组固定参数进行控制,具有一定局限性,单独使用这种控制无法从根本上解决动态品质和稳态精度的矛盾。为此,引入模糊控制的方法,利用车轮马达转速误差和误差的变化率作为模糊控制器的输入,变量泵排量控制电流的补偿量作为输出,在MATLAB/Simulink中设计了模糊控制器。结合AMESim中的系统模型,进行联合仿真。结果表明模糊控制比PID控制具有更强的鲁棒性,也说明了本文所设计的模糊控制器控制效果较好,具有一定的理论意义和实际应用价值。本文的研究内容为采用新型仿真软件AMESim在静液传动系统中的应用提供了依据,为设计泵控马达调速系统的控制策略提供了参考。关键词:静液传动;AMESim;PID控制;模糊控制哈尔滨工业大学工学硕士学位论文-II-Abstract Hydrostatic transmission system can be in a wide range of vehicle speed to realize stepless speed control, and with a small volume and weight to transfer large power, low operating cost, therefore it has been widely used in the vehicle driving systems. But this hydrostatic transmission system is a typical nonlinear, time varying high order system. plex working conditions, and big load changes, made the dynamic performance of system change with load changes, and the changes of the dynamic performance also made the power transmission system efficiency reducing, had a gas-guzzling. So it desperately needs to adopt the advanced control technology to improve system performance. This thesis summarized the development of research on the driving system of hydrostatic transmission vehicles in recent years. Detailed analysis had been done for the hydrostatic driving system structure and principle, the speed control system of the variable pump and quantitative motor, pump discharge control agencies, engine performance evaluation indexes, and power match between engine and the variable pump and other related problems. Focuses on closed loop speed adjust system of the pump controlling motor, the hydraulic dynamic simulation model was set up based on the AMESim simulation software. And then simulation analysis had been done for the influence factors of the system dynamic performance. An

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  本文关键词：基于AMESim的静液传动车辆驱动系统控制及仿真，由笔耕文化传播整理发布。