Chassis Design And Analysis Of Its Handling And Stability For A New Type Of Mini-Electric Vehicle

From the appearance of the electric vehicle up to the present, all the works have been changing the drive line in the original vehicle foundation. The keystone of the research is how to improve the power performance and prolong the continued drives. With the development of technology, the electric vehicle has played active action in improving the energy security and air pollution. With the development of electric vehicle, the electric vehicle needs to develop from refitting vehicle for one kind of late-model vehicle; the electric vehicle needs the specification according to new sources of energy , the new driving force system , system carries out brand-new design on entire vehicle various.This paper proposes a new type of miniature anti-triangle electric vehicle, which is a mini-electric vehicle for the urban families. This vehicle is an urban transport, which is suitable for a short-distance traffic, carrying two passengers or capable of carrying a modest cargo. It is tailor-made for the vast majority of urban families of China.Our roads in cities, transportation, energy, environment, as well as the average family income and other factors are fully considered when designing this vehicle. A large number of innovative efforts are made in the vehicle's structural layout, appearance, power and the electrical system, aiming at environmental protection, energy saving, portable, safe, easy manipulation, and other aspects of a breakthrough, making this vehicle as ordinary people can afford, and affordable, with a good novel handsome and the technical forward-looking utility vehicles.This paper mainly focuses on structural design of the running gear and the braking system of the new type of miniature ant-triangle electric vehicle, and in order to verify the feasibility of electric vehicles, this paper also analyzes its handling and stability.For the chassis design, the frame and the suspension-oriented institutions are established by the engineering design software UG, and then the structural analysis is also done by UG. The braking system and the shock absorber are selected after the theoretical calculation. A differential equation is derived under the moving coordinate system. On the basis of this equation, a 3-DOF nonlinear handling and stability model is established. Comparison is made between the stability and dynamic responding ability of the ant-triangle electric vehicle and the ordinary layout vehicle both in time domain and frequency domain. On the premise of a small steering angle and a small lateral acceleration, the 3-DOF nonlinear model is reduced to a 2-DOF linear model. Base on the 2-DOF linear model, theoretical analysis of the ant-triangle electric vehicle's steady response, stability and the frequency response are done, and correlation curves are mapped. The calculation result indicates that the handling and stability of the ant-triangle electrical vehicle and the ordinary layout vehicle is equivalent, which shows that the ant-triangle electrical vehicle is undoubtedly feasible regarding the features discussed in this paper.