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	极限工况下汽车轮胎侧偏角测试方法研究
	张小龙 ; 陈彬 ; 宋健 ; 王啟永 ; Zhang Xiaolong ; Chen Bin ; Song Jian ; Wang Qiyong
	2016-03-30 ; 2016-03-30
关键词	汽车 极限工况 轮胎侧偏角 测试方法 vehicles steering system defects experimental identification EPS U467.4
其他题名	Test Method Research on Vehicle's Tire Side Slip Angle in Extreme Driving Conditions
中文摘要	轮胎侧偏特性识别是汽车动力学稳定性控制的基础,而极限工况下因侧倾转向和变形转向的影响,基于动力学模型的轮胎侧偏角估计方法精度变差。提出一种基于直接视觉测量转向轮转角和车身姿态的轮胎侧偏角测试方法,为极限工况下转向轮转角和轮胎侧偏角观测模型研究提供技术手段。首先分析了侧偏角测试原理,基于高精度定位定向差分GPS和图像实时处理器CVS 1456等构建了实车试验系统。在对试验车转向系统传动比进行标定的基础上,原地转向和小侧向加速度行驶试验表明:基于图像获取转向轮转角与基于转向盘转角方法一致性好。圆周加减速行驶试验表明,在侧向加速度约0.8 g时,汽车达到极限工况,基于图像方式获取的转向轮转角曲线体现了侧倾转向和变形转向的影响,试验车具有不足转向特性。实车试验表明所提出方法是有效、可行的。; Identification of tire cornering properties is the base of vehicle dynamics stability control,however,tire side slip angle estimation accuracy based on dynamic model goes worse because of the effects of roll steering and compliance steer under the extreme driving conditions. In order to provide technical means for research on steering wheel angle and wheel side slip angle observation model under the extreme conditions,this paper presents a test method for tire side slip angle based on the direct vision measurement of steering wheel angle and the vehicle body attitude. The test principle of the side slip angle was firstly analyzed,then the roadway test system was established based on the high-precision,double antenna differential GPS and the real-time image processing device CVS 1456. On the basis of the calibration of the test vehicle steering system gear ratio,both the pivot steering test and the small lateral acceleration test showed the good consistency of the results of the steering wheel angle based on image acquisition with the hand-wheel angle. In addition,the circular acceleration-deceleration tests showed that the test vehicle reached the extreme conditions while the lateral acceleration was more than 0. 8 g,and at this time the steering wheel angle curve with image acquisition method fluctuates and reflects the effects of roll steering and compliance steer, so comprehensively the test vehicle has understeer characteristics. The roadway tests indicate that the method proposed is effective and practicable.
语种	中文 ; 中文
内容类型	期刊论文
源URL	[http://ir.lib.tsinghua.edu.cn/ir/item.do?handle=123456789/144807]
专题	清华大学
推荐引用方式 GB/T 7714	张小龙,陈彬,宋健,等. 极限工况下汽车轮胎侧偏角测试方法研究[J],2016, 2016.
APA	张小龙.,陈彬.,宋健.,王啟永.,Zhang Xiaolong.,...&Wang Qiyong.(2016).极限工况下汽车轮胎侧偏角测试方法研究..
MLA	张小龙,et al."极限工况下汽车轮胎侧偏角测试方法研究".(2016).

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