精确细分式汽车底盘测功机惯性系统  

Precise and fractionized inertial system of automobile chassis dynamometer

作　　者：徐观[1,2] 苏建[1] 李晓韬[2] 苏丽俐[1] 朱俊兰[1] 

机构地区：[1]吉林大学交通学院,长春130022 [2]吉林大学机械科学与工程学院,长春130022

出　　处：《吉林大学学报（工学版）》2010年第3期636-639,共4页Journal of Jilin University:Engineering and Technology Edition

基　　金：吉林省科技厅重点项目(20065007)

摘　　要：为提高汽车底盘测功机的检测精度,分析了惯性系统中飞轮组的选配原理。提出了基于质量倍增法的飞轮组分级原则,设计了9级飞轮组惯性系统,将模拟的质量区间500～10000kg分为512等级,精度达到±10kg,实现了飞轮模拟质量与汽车质量的精确匹配。对飞轮进行了优化设计。研究了飞轮的制动方法,消除了检测过程中非工作飞轮的附加转动惯量,保证了检测结果的准确性。研发了惯性系统的试验样机,并通过对比试验验证了精确细分式惯性模拟系统的可行性和准确性。The selection principle of flywheels in the inertial system of the automobile chassis dynamometer was analyzed to enhance its test accuracy.The gradation principle of flywheels was proposed based on the double multiplication method,and an inertial system with 9 steps of flywheel groups was designed,the simulative mass ranging 500~10 000 kg was divided into 512 levels with accuracy of ±10 kg.The accurate matching between the simulative flywheel mass and the tested automobile mass was realized.The optimal design of the flywheel was performed.The braking method of the flywheel was studied to remove the additional inertia moment from the inoperative flywheel in the test process,ensuring the accuracy of test results.An experimental prototype of the inertial system was developed.The feasibility and accuracy of the developed precise and fractionized inertial system were validated by comparative tests.

关 键 词：车辆工程 汽车检测 底盘测功机 惯性系统 精确细分法 

分 类 号：U472.9[机械工程—车辆工程]