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Experimental Measurement of the Stopping Performance of a Tractor-Semitrailer from Multiple Speeds

机译：从多种速度看拖拉机半挂车停车性能的实验测量

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This report will focus on the braking performance of the vast majority of truck tractors, i.e., two and three axle truck tractors with a GVWR of 70,000 pounds or less, and truck tractors with four or more axles and a GVWR of 85,000 pounds or less. These will be referred to in the remainder of this report as 'normal duty' truck tractors (as compared to 'severe duty' truck tractors, i.e., those three-axle truck tractors with a GVWR greater than 70,000 pounds, and truck tractors with four or more axles and a GVWR greater than 85,000 pounds). FMVSS No. 121 also contains maximum allowable stopping distances for vehicles that cannot attain a speed of 60 mph in two miles of driving on a flat, level roadway. If a vehicle cannot attain a speed of 60 mph, it is tested to ensure that it can meet the maximum permitted stopping distance requirement from an initial speed that is four to eight mph less than the maximum speed that is attainable.

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作者
Garrott, W. R.; Heitz, M.;
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年度 2011
页码 1-47
总页数 47
原文格式 PDF
正文语种 eng
中图分类工业技术;
关键词
Stopping distances ; Brake performance ; Loading ; Vehicle instrumentation ; Brake timing ; Data analysis ; Motor vehicles ; Figures ; Tables (Data) ; Measurements;

机译：停止距离;制动性能;装载;车辆仪表;制动时间;数据分析;机动车辆;数字;表格（数据）;测量;

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1. Railway track design optimisation for enhanced performance at very high speeds: experimental measurements and computational estimations [J] . Ferreira Patricia, Maciel Rui, Estaire Jose, Structure and Infrastructure Engineering . 2019,第1a3期

机译：铁路轨道设计优化以极高的速度提高性能：实验测量和计算估计
2. Discussion on ????????Universal high-speed digital computers: a magnetic store????????, ????????Universal high-speed digital computers: serial computing circuits????????, ????????Universal high-speed digital computers: a small-scale experimental machine???????? and ????????The position synchronization of a rotating drum???????? before the Measurements Section, 20th November, 1951 [J] . Proceedings of the IEE - Part II: Power Engineering . 1952,第68期

机译：关于通用高速数字计算机：磁性存储器的讨论，通用高速数字计算机：串行计算电路的讨论通用高速数字计算机：小型实验机和????????旋转鼓的位置同步???????? 1951年11月20日，测量科前
3. Research into the advanced experimental methods for precision ion stopping range measurements in matter [J] . Bakhmetjev IE., Fertman AD., Golubev AA., Laser and Particle Beams . 2003,第1期

机译：物质中精确离子停止范围测量的先进实验方法研究
4. The Influence of Disablement of Various Brakes on the Dry Stopping Performance and Stability of a Tractor-Semitrailer [C] . Ashley (Al) Dunn, C. Brian Tanner, Douglas R. Morr, SAE World Congress . 2009

机译：各种刹车对拖拉机 - 半拖车的干涸性能和稳定性的影响
5. A six degree-of-freedom vehicular performance measurement system (VPMS) with integral engine speed measurement. [D] . Fuglewicz, Daniel Patrick. 2005

机译：具有整体发动机转速测量功能的六自由度车辆性能测量系统（VPMS）。
6. Stopping Speed in the Stop-Change Task: Experimental Design Matters! [O] . Vera Michaela Gordi, Barbara Drueke, Siegfried Gauggel, 2013

机译：停止更改任务中的停止速度：实验设计很重要！
7. Aim: To investigate the value of ElastPQ measurement for differential diagnosis of benign and malignant focal liver lesions (FLLs) by using histologic results as a reference standard. Material and methods: A total of 154 patients were included. ElastPQ measurement was performed for each lesion in which the shear wave speed (SWS) was measured. The difference in SWS and SWS ratio of FLL to surrounding liver were evaluated, and the cut off value was investigated. Receiver operating characteristic (ROC) curve was plotted to evaluate the diagnostic performance. Histology as a gold standard was obtained by surgery in all patients. Results: A total of 154 lesions including 129 (83.7 ) malignant FLLs and 25 (16.3 ) benign ones were analysed. The SWS of malignant and benign FLLs was significantly different, 2.77±0.68 m/s and 1.57±0.55 m/s (p<0.05). The SWS ratio of each FLL to surrounding liver parenchyma was 2.23±0.49 for malignant and 1.14±0.36 for benign FLLs (p<0.05). The cut off value for differential diagnosis was 2.06 m/s for SWS and 1.67 for SWS ratio. Conclusions: ElastPQ measurement provides reliable quantitative stiffness information of FLLs and may be helpful in the differential diagnosis between malignant and benign FLLs. [O] . Yi Dong, Wen-Ping Wang, Yadan Xu, 2017

机译：目的：通过使用组织学结果作为参考标准，研究ELASTPQ测量对良性和恶性局灶性肝病变（FLLS）的鉴别诊断的价值。材料和方法：共有154名患者。对测量剪切波速度（SWS）的每个病变进行ELASTPQ测量。评估了FL1与周围肝脏的SWS和SWS比的差异，研究了切断值。接收器操作特征（ROC）曲线被绘制以评估诊断性能。组织学作为金标准通过患者的手术获得。结果：共有154例病变，包括129名（83.7％）恶性FLLS和25（16.3％）良性物质。 SWS的恶性和良性FLLS显着差异，2.77±0.68 m / s和1.57±0.55 m / s（p <0.05）。对于良性FLL的恶性为2.23±0.36，每个FL1与周围肝实质的SWS比为2.23±0.36（P <0.05）。差分诊断的切断值为SWS和SWS比率为2.06米/秒。结论：ELASTPQ测量提供了FLLS的可靠定量刚度信息，可能有助于恶性和良性FLL之间的差异诊断。
8. Multiple over-all performance and rotating-stall characteristics of a 15-stage experimental axial-flow compressor at an intermediate speed [R] . Lucas, James G, Filippi, Richard E 1954

机译：15级实验轴流式压缩机在中速时的多重总体性能和旋转失速特性

Experimental Measurement of the Stopping Performance of a Tractor-Semitrailer from Multiple Speeds

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