车辆动力总成试验台动态模拟控制方法

中国机械工程 ›› 2015, Vol. 26 ›› Issue (2): 278-283.

车辆动力总成试验台动态模拟控制方法

李文礼1,3;石晓辉1;施全1;邹喜红1;郭栋3;余勇2

1.重庆理工大学汽车零部件制造及检测技术教育部重点实验室,重庆,400054
2.重庆市科学技术研究院,重庆,400054
3.西南交通大学,成都,610031

出版日期:2015-01-25 发布日期:2015-01-23
基金资助:
重庆市科技攻关计划资助项目(cstc2012gg-yyjsB30002)

Research on Dynamic Load Emulation for Powertrain Testbench

Li Wenli1,3;Shi Xiaohui1;Shi Quan1;Zou Xihong1;Guo Dong3;Yu Yong2

1.Key Lab of Automobile Components and Parts Manufacturing and Test Technology of Ministry of Education Chongqing University of Technology,Chongqing,400054
2.Chongqing Academy of Science and Technology,Chongqing,400054
3.Southwest Jiaotong University,Chengdu,610031

Online:2015-01-25 Published:2015-01-23
Supported by:
Key Technology R&D Program of Chongqing ( No. cstc2012gg-yyjsB30002)

摘要/Abstract

摘要：

利用交流测功机模拟车轮受到的路面负载与惯性负载，以实现在室内台架上实现对车辆动力总成系统的动态模拟。进行了车辆纵向动力学模型和台架系统动力学模型的构建，计算出整车等效到主动车轮的转动惯量，利用转速跟踪方法动态模拟了实车工况；采用基于迭代反馈整定理论的二自由度PID控制算法来控制油门踏板,使节气门快速准确地达到目标位置。３次迭代后，油门踏板控制系统超调量降低至14.7%,稳定时间缩短为0.5s,提高了动态模拟的控制精度和响应速度。

关键词: 动力总成试验台, 动态模拟, 迭代反馈整定, 二自由度PID

Abstract:

To test and emulate the vehicle powertrain performance,a test bed with dynamic emulation unit was constructed.The loads of the vehicle wheel subjected the actual road and inertia were emulated by two AC dynamometers.The vehicle longitudinal dynamics model and the mathematical model of the test bed were established.The whole vehicle was equaled to wheel inertia based on actual pavement condition and test platform structure.Transfer function of the test bench was identified and a strategy of speed track was proposed.Two-degree-of-freedom(2-DOF) proportional-integral-derivative(PID) controller for an engine throttle system was designed and the PID control gains were optimized using IFT.After the third iteration, the percent overshoot of the accelerator pedal control system is reduced to 14.7%,and settling time is reduced to 0.5s.The results show that the control accuracy and response speed are improved.

Key words: powertrain test-bed;dynamic emulation;iterative , feedback tuning(IFT);2-DOF PID

中图分类号:

U467.3

李文礼, 石晓辉, 施全, 邹喜红, 郭栋, 余勇. 车辆动力总成试验台动态模拟控制方法[J]. 中国机械工程, 2015, 26(2): 278-283.

Li Wenli, Shi Xiaohui, Shi Quan, Zou Xihong, Guo Dong, Yu Yong. Research on Dynamic Load Emulation for Powertrain Testbench[J]. China Mechanical Engineering, 2015, 26(2): 278-283.

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