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Jiang L.B.,Guangdong Provincial Key Laboratory of Automotive Engineering | Chen Z.M.,South China University of Technology | Wu Y.Q.,South China University of Technology
Applied Mechanics and Materials | Year: 2014

Panoramic parking assistant system demands for the high performance of hardware when capturing, storing, processing image and demands for capturing from four video sources. This paper analyzes the microprocessor TM320DM642 and TM320DM6467(DM642 and DM6467 for short), both of which are based on the DaVinci technology, and presents two solutions for four video capturing and processing, as "DM642+TVP5150" and "DM6467+TVP5158". Hardware platform based on DM642 has been established and tested. High resolution panoramic video of bird's-eye view is rendered smoothly on the platform. The result shows that microprocessor of DaVinci technology has excellent performance for the panoramic parking assistant system, and DM642 microprocessor meets the hardware demands of the panoramic parking assistant system. © (2014) Trans Tech Publications, Switzerland.

Zang M.,South China University of Technology | Zang M.,Guangdong Provincial Key Laboratory of Automotive Engineering | Qin T.,South China University of Technology | Qin T.,Guangdong Provincial Key Laboratory of Automotive Engineering
Jixie Gongcheng Xuebao/Journal of Mechanical Engineering | Year: 2010

It is very necessary to replace experimental test by a numerical model of wheel impact test in order to reduce experimental times and improve design efficiency. A finite element model of A-alloy wheel impact test is established based on fully consideration of static and dynamic behaviors of impact test stand. The whole model includes impact block, wheel & tire assembly and test stand. The rubber supports are simulated by using spring-damper elements, and the prestressing of the wheel & tire assembly is applied as the initial condition, the impact process is solved by the transient dynamic explicit finite element software LS-DYNA. The simulation model is verified by comparing the simulation results with experimental results of the strain on some measuring points. It is obvious that finite element models have a guiding significance and practical value for initial design and development of the A-alloy wheel. ©2010 Journal of Mechanical Engineering.

Chen J.,South China University of Technology | Chen J.,Guangdong Provincial Key Laboratory of Automotive Engineering | Li L.,South China University of Technology | Lan F.,South China University of Technology | And 2 more authors.
Qiche Gongcheng/Automotive Engineering | Year: 2015

For reducing the thermal load of vehicle dashboard, a numerical simulation on the heat transfer process of vehicle is carried out under the summer weather condition in Hainan based on heat balance equation, with an interior temperature field obtained well agreeing with experimental results. Based on this, the effects of different heat transfer modes and other factors on the temperature field of dashboard are analyzed. The results indicate that the radiation and conduction are the main factors affecting the temperature field of dashboard. Reducing the transmittance of front windshield, putting on sun visor, reasonably increasing the thermal conductivity coefficient of dashboard and selecting appropriate parking place can significantly reduce the thermal load of dashboard. © 2015, SAE-China. All right reserved.

Tan D.,South China University of Technology | Tan D.,Guangdong Provincial Key Laboratory of Automotive Engineering | Luo Y.-T.,South China University of Technology | Luo Y.-T.,Guangdong Provincial Key Laboratory of Automotive Engineering
Huanan Ligong Daxue Xuebao/Journal of South China University of Technology (Natural Science) | Year: 2012

Proposed in this paper is a novel power shift transmission that inherits the advantages of power shift of dual-clutch transmission and achieves more speed ratios with limited gear pairs. Then, based on further analyses of the structure and the mechanism of the transmission, a dynamic simulation model containing the shift dynamics models and the shift control models is established for the vehicle drive system, and the factors affecting the shift quality are analyzed and optimized. Moreover, in order to verify the shift performance, the proposed simulation model is applied to the successive upshift of the transmission. The results show that the novel power shift transmi-ssion not only achieves 2(n+m) speed ratios with n+m fixed-axis gear pairs but also ensures high power shift quality.

Chen J.,South China University of Technology | Chen J.,Guangdong Provincial Key Laboratory of Automotive Engineering | Huang C.,South China University of Technology | Huang C.,Guangdong Provincial Key Laboratory of Automotive Engineering | And 5 more authors.
Qiche Gongcheng/Automotive Engineering | Year: 2013

Based on the requirements of regulation ECE R66, a finite element (FE) model for bus body section is built with its simulation accuracy verified by test, and the rollover process and structural deformation of bus are analyzed. On this basis a FE model for body section with occupants is then constructed to investigate the motion path, injury status and their evaluation of occupants at different positions with and without safety belt worn.

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