Guangdong Province Key Laboratory of Vehicle Engineering

Guangzhou, China

Guangdong Province Key Laboratory of Vehicle Engineering

Guangzhou, China

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Sun D.,Guangdong Mechanical & Electrical Polytechnic | Sun D.,South China University of Technology | Lan F.,South China University of Technology | Lan F.,Guangdong Province Key Laboratory of Vehicle Engineering | And 4 more authors.
Qiche Gongcheng/Automotive Engineering | Year: 2016

To realize the acceleration slip regulation (ASR) function of pure motor control for dual-motor four-wheel drive electric vehicles, the control parameters are optimized with PID control method on roads with different adhesive coefficients. On this basis, an online adaptive adjustment is conducted on PID control parameters by using single neuron adaptive control algorithm based on radial basis function system identification, enhancing the response speed and robustness of control algorithm. An off-line simulation and a rapid prototype-in-the-loop test are performed on different roads. The results show that the use of control algorithm proposed can realize the ASR function of electric vehicles on different road conditions, enhance adaptability and control accuracy and speed, meeting the requirements of real time control, compared with PID algorithm. © 2016, SAE-China. All right reserved.


Ma C.C.,South China University of Technology | Lan F.C.,South China University of Technology | Lan F.C.,Guangdong Province Key Laboratory of Vehicle Engineering | Chen J.Q.,South China University of Technology | And 4 more authors.
Materials Research Innovations | Year: 2015

Aluminium foam has been adopted as one of the light filler materials in auto body structural components because of its excellent energy-absorbing ability and lightweight which play a key role in reducing weight and improving safety. This paper combines the porosity of aluminium foam material and the application in car's crashworthy structures to present the energyabsorption behavior and its effect evaluation. First, the paper focuses on the effect of porosity on the energy absorption by experimental study. All the experiments were performed with the specimens subjected to quasi-static axial loadings. As the experimental results, the energyabsorbing properties on porosity are presented, implying that the porosity is a very sensitive factor to energy absorption and the best porosity of aluminium foam in energy-absorption capacity was obtained. A case study on aluminium foam-filled material for automobile front rails was carried out by collision simulations, the improved crashworthiness was verified. © W. S. Maney & Son Ltd 2015.


Lan F.,South China University of Technology | Lan F.,Guangdong Province Key Laboratory of Vehicle Engineering | Zeng F.,South China University of Technology | Zeng F.,Guangdong Province Key Laboratory of Vehicle Engineering | And 4 more authors.
Jixie Gongcheng Xuebao/Journal of Mechanical Engineering | Year: 2014

Low energy consumption, safety and lightweight are the topic issues of the automobile industry. As a sort of lightweight and energy absorbing metallic material, the closed-cell aluminum foam has some advantage features of strong specific stiffness and specific strength with a low density, good impact resistance and energy absorbability, so it is brought to the new forefront of the automotive industry. The test criteria of uniaxial compression is described and the definition of several important parameters are clarified, such as Young modulus, compressive strength, yield strength, plateau stress and densification strain. The constitutive models of closed-cell aluminum foams are reviewed, among which the yield surface models are further emphasized. The modeling approaches of microstructure are summarized, and the macro material models integrated into commercial softwares are compared. Under summarizing the features of energy absorbing materials, the impact resistance and energy absorbability of closed-cell aluminum foams are especially analyzed. The influences of impact speed and strain rate are reviewed, and also some possible reasons are offered. The application of closed-cell aluminum foams in vehicle lightweight and crashworthiness is summarized, and several typical cases are analyzed. The problems and difficulties on understanding closed-cell aluminum foams' mechanical properties and its applications in automobile structures are raised, and several feasible research directions are suggested. ©2014 Journal of Mechanical Engineering


Sun D.,South China University of Technology | Lan F.,South China University of Technology | Lan F.,Guangdong Province Key Laboratory of Vehicle Engineering | Chen J.,South China University of Technology | Chen J.,Guangdong Province Key Laboratory of Vehicle Engineering
Qiche Gongcheng/Automotive Engineering | Year: 2013

An ideal braking force distribution strategy based on curve I is designed for a two-axle two motor 4WD electric vehicle. With the strategy, the braking forces of front and rear axles are distributed as per I-curve during braking, and both front and rear motors recover braking energy, taking its potential of braking energy recovery while assuring braking stability. The results of simulation show that the strategy can recover more energy with a braking force distribution pattern well agreeing with I-curve, and ensure braking stability, demonstrating its good effectiveness.

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