基于发动机外特性的cvt速比控制方法研究.doc

基于发动机外特性的CVT速比控制方法研究
目次
《汽车技术》杂志2009年第10期摘要
基于发动机外特性的CVT速比控
制方法研究
(1. 吉林大学;2. 装甲兵技术学院;)
【摘要】针对传统无级变速器速比控制中速比变化频繁,从而导致无级变速器效率低下、磨损严重等问题,研究了一种基于发动机外特性的速比控制方法,即在保证经济性与动力性的条件下限制无级变速器速比变化。理论研究和仿真分析结果表明,所提出的最佳经济区速比控制方法可以有效降低无级变速器速比调节频率,从而提高无级变速器效率与使用寿命。
关键词:CVT 速比控制外特性
Research on CVT Speed Ratio Control Based on External
Characteristic of Engine
Wang Jiaxue1,2, Wang Qingnian1, Zhou Yunshang3, Wang Xiaoyu2
(1. Jilin University; 2. Institute of Armored Vehicle Technology; 3. Hunan University)
【Abstract】 To solve the problem of low efficiency and serious wear of CVT caused by frequent change of speed ratio of conventional CVT speed ratio control, a speed ratio control method based on external characteristic of engine was rese
arched, . to limit variation of CVT speed ratio under the condition of ensuring economy and power performance. The theoretical study and simulation analysis results indicate that the proposed speed ratio control method in the optimal economic area can effectively reduce the frequency of speed ratio regulation of CVT, thus improve CVT efficiency and service life.
Key words: CVT speed ratio control External characteristic
《汽车技术》杂志2009年第10期摘要
基于dSPACE的ASR硬件在环仿真平台开发
及ECU性能试验
张为1 王伟达2 丁能根1 刘辉2 徐向阳1
(;)
【摘要】简述了ASR硬件在环仿真平台的基本组成和工作原理,利用dSPACE实时仿真系统与所建立的车辆模型连接构成了ASR ECU硬件在环仿真系统。在该系统上验证了所开发ASR ECU的控制逻辑并对其参数进行了优化。将利用硬件在环仿真技术开发的ECU安装在某轻型车辆上进行试验,结果表明,该车驱动轮的过度滑转情况得到抑制;该系统可较好地模拟车辆系统和试验环境,并可替代部分实车试验。
主题词:ASR 硬件在环仿真 ECU 试验
Development of ASR Hardware-In-the-Loop
Simulation Platform based on dSPACE and
Performance Tests of the ECU
Zhang Wei1, Wang Weida2, Ding Nenggen1, Liu Hui2, Xu Xiangyang1
(1. Beijing University of Aeronautics and Astronautics; Beijing Institute of Technology)
【Abstract】Basic structure and operating principle of ASR hardware in the in-the-loop simulation platform is briefed in the paper, in which dSPACE real-time simulation system and the established vehicle model are jo