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Effect of information delay on string stability of platoon of automated vehicles under typical information frameworks 总被引:2,自引:1,他引:1
The effect of the information delay, which was caused by the nature of the distance sensors and wireless communication systems,
on the string stability of platoon of automated vehicles was studied. The longitudinal vehicle dynamics model was built by
taking the information delay into consideration, and three typical information frameworks, i.e., leader-predecessor framework
(LPF), multiple-predecessors framework (MPF) and predecessor-successor framework (PSF), were defined and their related spacing
error dynamics models in frequency domain were proposed. The string stability of platoon of automated vehicles was analyzed
for the LPF, MPF and PSF, respectively. Meanwhile, the related sufficient string stable conditions were also obtained. The
results demonstrate that the string stability can be guaranteed for the LPF and PSF with considering the information delay,
but the ranges of the control gains of the control laws are smaller than those without considering the information delay.
For the MPF, the “weak” string stability, which can be guaranteed without considering the information delay, cannot be obtained
with considering the information delay. The comparative simulations further demonstrate that the LPF shows better string stability,
but the PSF shows better string scalable performance. 相似文献
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2011年6月16日-2011年7月15日,8家制造商总共实施召回8次,召回1303辆车。本期的主要特点是多家制造商因为同一缺陷召回同一车型。具体的召回情况如下表所示: 相似文献
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在正常工况下,对某焊接厂房进行了通风效果试验,现场测试了厂房温湿度、臭氧浓度、粉尘浓度等参数,发现采用置换通风的方式,厂房的速度流场均匀,但臭氧浓度、粉尘浓度均没有达到设计要求,稍微偏高,这与送风速度有关,试验结果为高大厂房置换通风气流组织的研究提供了可靠的数据资料。 相似文献
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