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| 1 | Simulation investigation of tractive energy conservation for a cornering rear-wheel-independent-drive electric vehicle through torque vectoring显示文摘Although electric vehicle fully exhibits its comparative merits of energy conservation and environmental friendliness, further improvement of its traction energy efficiency lacks comprehensive investigations in the past. In this paper, the effect of the torque vectoring on traction energy conservation during cornering for a rear-wheel-independent-drive electric vehicle is investigated.Firstly, turning resistance coefficient and energy conservation mechanism of torque vectoring are derived from the single track dynamic model. Next, an optimal torque vectoring control strategy based on genetic algorithm is proposed, with the consideration of the influence of the operation-point change of the in-wheel motors, to find out the best torque vectoring ratio offline. Finally,various simulation tests are conducted to validate the energy conservation effect after Simulink modelling. The results verify that though the optimization of the operating region of the motors is the main part for tractive energy conservation, the contribution of torque vectoring itself can reach up to 1.7% in some typical cases. | SUN Wen WANG JunNian WANG QingNian ASSADIAN Francis FU Bo | 2018 | Science China(Technological Sciences)2018，61，2： | 5 |
| 2 | Development and experimental validation of an automatic parking brake system with less driveline sensor显示文摘Electrical Parking Brake(EPB) has been popularly used in passenger cars over the past ten years. With the help of the several kinds of sensors mounted in driveline for the total traction force estimation, EPB can obtain well performance on drive-off assistance and automatic parking brake. Furthermore, its AUTOHOLD function can realize automatic parking brake and ease the driver. However, given that the higher cost and complexity of this traction force estimation method based on the driveline sensors and its slower response resulted by applying maximum parking force for safety parking while driving off, a novel automatic parking brake system without these transmission system sensors, such as clutch position sensor for the cars with manual transmission, is proposed in this paper, including its control scheme and application test. Firstly, the indirect judgement method of the appropriate moment to release the parking brake, which is based on the car pitch moment when it drives off, is introduced according to the force analysis when the car is ready to go. Then a pragmatic mass estimation method for proper brake force calculation is proposed for improving the drive-off performance. In addition, for the convenience and drivability of skillful driver, as well as the system reliability, a mechanical redundant design to reserve the conventional handbrake lever is also described. Finally, various simulations based on CarSim software and road tests are performed to validate its effectiveness. | WANG JunNian SUN NaNa YAN JiaWei SONG DaFeng WANG QingNian | 2018 | Science China(Technological Sciences)2018，61，11： | 4 |
| 3 | Embedding Countably Generated Algebras into Simple 2-Generated Algebras显示文摘 | Qiuhui Mo Xiangui Zhao Qingnian Pan | 2017 | Algebra Colloquium2017，24，3： | 3 |
| 4 | Evaluation of Influence of Motorized Wheels on Contact Force and Comfort for Electric Vehicle 显示文摘 | Jin Liqing Song Chuanxue Wang Qingnian | 2011 | Journal of Computers2011，6，3： | 1 |
| 5 | Evaluation of Influence of Motorized Wheels on Contact Force and Comfort for Electric Vehicle显示文摘 | Liqiang Jin Chuanxue Song Qingnian Wang | 2011 | Journal of Computers2011，，3： | 1 |
| 6 | Responses of ground-dwelling spiders to four hedgerow species on sloped agricultural fields in Southwest China显示文摘Spiders are important predators in agroecosystems and contribute to the control of agricultural pest populations. Habitat manage- ment such as the creation of new semi-natural habitats around or within fields enhances spider abundance and species diversity. Using pitfall traps, we investigated the effects of four hedgerow plant species, which serve as undisturbed and permanent semi-natural habitats, on ground-dwelling spider activity density (a parameter of population density and relative activity) and species richness. Samples were collected over two winter wheat and two summer maize growing seasons during 2005-2007 in trial field 1 (slope gradient of 20%) and field 2 (slope gradient of 12%) at the Ziyang Experimental Site in Sichuan Province, China. The hedgerow species evaluated were Amorpha fruticosa (field 1), Vetiveria zizanioides (field 1), Eulaliopsis binata (field 2), and Medicago sativa (field 2). Compared to control plots, hedgerow plots had significantly higher activity density and species richness of ground-dwelling spiders within strips in both fields 1 and 2 during the wheat growing season. The presence of hedgerow strips did not augment the activity density and species richness of ground-dwelling spiders within the crop fields during the wheat or maize growing seasons. The ground-dwelling spider activity density within hedgerow strips was significantly higher in the Vetiveria than in the Amorpha plots and in the Medicago than in the Eulaliopsis plots, and the species richness was significantly higher in the Vetiveria than in the Amorpha plots during the wheat season. Our results suggest that hedgerows may serve as important overwintering sites for ground-dwelling spiders during the wheat growing season. In addition, the diversification of agroecosystems by using hedgerow strips may be a viable strategy for maintaining ground-dwelling spider populations in agricultural areas. However, ground-dwelling spiders did not move into adjacent crop fields; therefore, future work should address the mechanisms of attracting spiders into crop fields, thereby contributing to the bio-control of pests. | Yuhong Wu Qingnian Cai Chaowen Lin Yibing Chen Yuying Li Xu Cheng | 2009 | Progress in Natural Science:Materials International2009，19，3： | 1 |
| 7 | Xenobiotic metabolism of plant secondary compounds in the English grain aphid, Sitobion avenae (F.) (Hemiptera: Aphididae)显示文摘 | Maoxin Zhang Tingting Fang Guilin Pu Xiaoqin Sun Xuguo Zhou Qingnian Cai | 2013 | Pesticide Biochemistry and Physiology2013，，： | 1 |
| 8 | Evaluation of Influence of Motorized Wheels on Contact Force and Comfort for Electric Vehicle 显示文摘 | JIN LIQIANG SONG CHUANXUE WANG QINGNIAN | 2011 | Journal of Computers2011，6，3： | 1 |
| 9 | Parametric Design of Hybrid Power-train with ISG for Transit BUS显示文摘 | Liang Chu Qingnian Wang Minghui Liu | 2004 | SAE:2004-01-30652004，，： | 1 |
| 10 | Evaluation of influence of motorized wheels on contact force and comfort for electric vehicle显示文摘 | JIN Liqiang SONG Chuanxue WANG Qingnian | 2011 | Journal of Computers2011，6，3： | 1 |
| 11 | The Analysis of Energy-Saving Mechanism of Hybrid Excavator显示文摘 | WANG Pengyu WANG Qingnian ZHANG Qiming | 2010 | Applied Mechanics and Materials2010，，： | 1 |
| 12 | 加强管理 提高质量 依法做好医疗事故处理工作显示文摘本文介绍了山东省卫生厅依照《医疗事故处理条例》规定,采取了三项具体措施,妥善处理医疗事故争议,及时化解矛盾纠纷,保障了医患双方的合法权益和群众就医安全。 | Shandong Province Health Department// Shandong Province Health Department,No.1 Qingnian donglu, Jinan City, Shandong Province. 250011, PRC | 2005 | 中国医院2005，9，6： | 1 |
| 13 | An improved PID algorithm for the ratio control of metal belt CVT显示文摘 | Zou Naiwei Wang Qingnian Liu Jingang Zhang Youkun Yu Jing Jia Yuanhua | 2008 | Journal of Hunan University Natural Sciences2008，35，： | 1 |
| 14 | Evaluation of influence of motorized wheels on contact force and comfort for electric vehicle显示文摘 | J1N Liqiang SONG Chuanxue WANG Qingnian | 2011 | Journal of Computers2011，6，3： | 1 |
| 15 | Contamination and Remediation of Heavy Metals in Soils near E-waste Recycling Area显示文摘In order to assess heavy metals pollution in agricultural soil after renovation in typical e-waste recycling areas,212 soil samples were collected and the mass fractions of 7 kinds of heavy metals(Cd,Cr,Cu,Hg,Ni,Pb and Zn)were analyzed.The results indicated that heavy metals pollution in agricultural soil was commonly existed in the study areas,and the soil was slightly contaminated by Pb but was moderately or critically polluted by Cd and Cu.However,the carcinogenic risk and non-carcinogenic risk status by heavy metals pollution were beyond acceptable levels,and soil remediation was quite necessary.After some investigations of bioremediation,we found that saponin as washing agent could highly strengthen the behavior of heavy metals desorption from soil,which had a good prospect of engineering practice. | Chen Haitang He Huayan Zhou Dandan Lou Linjie Hu Qingnian | 2015 | Meteorological and Environmental Research2015，6，4： | 0 |
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