ass日本风韵熟妇pics男人扒开女人屁屁桶到爽|扒开胸露出奶头亲吻视频|邻居少妇的诱惑|人人妻在线播放|日日摸夜夜摸狠狠摸婷婷|制服 丝袜 人妻|激情熟妇中文字幕|看黄色欧美特一级|日本av人妻系列|高潮对白av,丰满岳妇乱熟妇之荡,日本丰满熟妇乱又伦,日韩欧美一区二区三区在线

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 0.8g, 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.