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摘要: 建立了半挂汽车列车转弯制动的动力学模型, 通过实车道路试验验证了模型的可信度。通过模型仿真, 分析了转弯制动过程中同轴左、右车轮垂直载荷的变化情况, 研究了载荷变化对车轮抱死顺序和制动稳定性的影响与提高制动气室压力对转弯制动稳定性的影响。仿真结果表明: 当制动气压最大值为0.62MPa时, 转弯制动过程中牵引车转向轴右侧车轮的垂直载荷由12.00kN增加到23.00kN, 左侧车轮由12.00kN减小为0.66kN, 载荷转移明显; 制动气压最大值提高后, 载荷转移具有相同的规律, 影响了同轴左、右车轮的抱死趋势和ABS起作用的时间; 当制动气压最大值从0.62MPa增加到1.50MPa时, 牵引车与半挂车的折叠角由0.73rad减小为0.67rad, 制动稳定性提高。Abstract: A cornering braking dynamics model of tractor-semitrailer was established.Its accuracy was verified by comparing its outputs with the test data of tractor-semitrailer.By the model simulation of cornering braking process, the changes of vertical loads on coaxial left and right wheels were analyzed, and their effects on wheel locking order and braking stability were carried out.The effect of brake chamber's pressure increase on cornering braking stability was studied. Simulation result indicates that when the maximum braking pressure is 0.62 MPa, the right wheel vertical load of tractor steering shaft increases from 12.00 kN to 23.00 kN, but the left wheel vertical load decreases from 12.00 kN to 0.66 kN, so load transfer is significant.When the maximum braking pressure increases, the load transfer obeys the same regulation, which affects the locking trends of coaxial left and right wheels and the work time of ABS.When the maximum braking pressure increases from 0.62 MPa to 1.50 MPa, the folding angle of tractor-semitrailer decreases from 0.73 rad to 0.67 rad, so the cornering braking stability improves.
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Key words:
- automotive engineering /
- tractor-semitrailer /
- load transfer /
- cornering braking /
- stability /
- braking pressure
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图 9 气压提高后牵引车前轴车轮载荷曲线
Figure 9. Load curves of front axle's wheels of tractor after braking pressure increasing
图 10 气压提高后牵引车前轴轮速曲线
Figure 10. Curves of front axle's wheel speeds of tractor after braking pressure increasing
图 11 气压提高后牵引车前轴制动气室压力曲线
Figure 11. Curves of front axle's braking pressures of tractor after braking pressure increasing
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[1] 夏长高. 汽车高速行驶操纵性柔性多体动力学预测方法[J]. 交通运输工程学报, 2004, 4 (4): 30-33. doi: 10.3321/j.issn:1671-1637.2004.04.008XIA Chang-gao. Flexible multibody system dynamics predicting method of high-speed vehicle handing[J]. Journal of Traffic and Transportation Engineering, 2004, 4 (4): 30-33. (in Chinese). doi: 10.3321/j.issn:1671-1637.2004.04.008 [2] 宋秀年, 苏建, 王东杰, 等. 半挂汽车列车弯道行驶制动稳定性[J]. 交通运输工程学报, 2010, 10 (1): 50-55. doi: 10.3969/j.issn.1671-1637.2010.01.009SONG Nian-xiu, SU Jian, WANG Dong-jie, et al. Braking stability of tractor-semitrailer running on curve[J]. Journal of Traffic and Transportation Engineering, 2010, 10 (1): 50-55. (in Chinese). doi: 10.3969/j.issn.1671-1637.2010.01.009 [3] CHEN C, TOMIZUKA M. Lateral control of commercial heavy vehicles[J]. Vehicle System Dynamics, 2000, 33 (6): 391-420. doi: 10.1076/0042-3114(200006)33:6;1-M;FT391 [4] KAGEYAMA I, NAGAI R. Stabilization of passenger carcaravan combination using four wheel steering control[J]. Vehicle System Dynamics, 1995, 24 (4/5): 313-327. [5] SHAHMIRZADI D, LANGARI R, RICALDE L D, et al. Intelligent vs sliding mode control in rollover prevention of tractor-semitrailers[J]. International Journal of Vehicle Autonomous Systems, 2006, 4 (1): 68-87. doi: 10.1504/IJVAS.2006.009308 [6] KAR S, RAKHEJA S, AHMED A K W. A normalised measure of relative roll instability for open-loop rollover warning[J]. International Journal of Heavy Vehicle Autonomous Systems, 2006, 13 (1/2): 74-97. doi: 10.1504/IJHVS.2006.009118 [7] 王德杉, 夏长高. 半挂汽车列车弯道制动效能分析[J]. 汽车技术, 1991 (12): 1-8. https://www.cnki.com.cn/Article/CJFDTOTAL-QCJS199112000.htmWANG De-shan, XIA Chang-gao. Braking efficiency analysis of semitrailer train in a turn[J]. Automobile Technology, 1991 (12): 1-8. (in Chinese). https://www.cnki.com.cn/Article/CJFDTOTAL-QCJS199112000.htm [8] 夏长高. 半挂汽车列车转弯制动性能的模拟计算[J]. 江苏理工大学学报, 1997, 18 (1): 50-55. https://www.cnki.com.cn/Article/CJFDTOTAL-JSLG199701009.htmXIA Chang-gao. Simulated computation of tractor-semitrailer performance on combined steering and braking maneuvers[J]. Journal of Jiangsu University of Science and Technology, 1997, 18 (1): 50-55. (in Chinese). https://www.cnki.com.cn/Article/CJFDTOTAL-JSLG199701009.htm [9] 徐达, 吴伟蔚. 半挂汽车列车轴间制动力分配的优化设计[J]. 武汉汽车工业大学学报, 1996, 18 (1): 1-5. https://www.cnki.com.cn/Article/CJFDTOTAL-WHQC601.000.htmXU Da, WU Wei-wei. Optimal design of braking forces distribution on tractor-semitrailer axles[J]. Wuhan Automotive Polytechnic University, 1996, 18 (1): 1-5. (in Chinese). https://www.cnki.com.cn/Article/CJFDTOTAL-WHQC601.000.htm [10] 李开军, 邓堃, 夏群生, 等. 半挂汽车列车制动中载荷转移对制动性能的影响[J]. 农业机械学报, 2007, 38 (11): 17-21. https://www.cnki.com.cn/Article/CJFDTOTAL-NYJX200711006.htmLI Kai-jun, DENG Kun, XIA Qun-sheng, et al. Load transfer of the tractor-semitrailer combination when braking and its effect on braking performance[J]. Transactions of the Chinese Society for Agricultural Machinery, 2007, 38 (11): 17-21. (in Chinese). https://www.cnki.com.cn/Article/CJFDTOTAL-NYJX200711006.htm [11] SAE J670e, vehicle dynamics terminology[S]. [12] 李松焱, 闵永军, 王良模, 等. 轮胎动力学模型的建立与仿真分析[J]. 南京工程学院学报: 自然科学版, 2009, 7 (3): 34-38. https://www.cnki.com.cn/Article/CJFDTOTAL-NJGC200903005.htmLI Song-yan, MIN Yong-jun, WANG Liang-mo, et al. Establishment and simulation analysis of tire dynamic model[J]. Journal of Nanjing Institute of Technology: Natural Science Edition, 2009, 7 (3): 34-38. (in Chinese). https://www.cnki.com.cn/Article/CJFDTOTAL-NJGC200903005.htm [13] 张代胜, 顾勤林, 陈朝阳, 等. 车辆转弯制动防抱死系统仿真[J]. 农业机械学报, 2005, 36 (9): 16-20. https://www.cnki.com.cn/Article/CJFDTOTAL-NYJX200509005.htmZHANG Dai-sheng, GU Qin-lin, CHEN Chao-yang, et al. Simulation of vehicle antilock braking system based on curved braking[J]. Transactions of the Chinese Society for Agricultural Machinery, 2005, 36 (9): 16-20. (in Chinese). https://www.cnki.com.cn/Article/CJFDTOTAL-NYJX200509005.htm [14] ISO 14794, heavy commercial vehicles and buses-braking in a turn-open-loop test methods[S]. -
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