Differential Control Of Two Back Driven Wheels Of Electric Vehicle

The Electric Vehicle is the important branch of automobile development, it concerns vehicles project, electrical motor and its driving technology, control technology, battery technology etc, these critical technologies. Its unique prospect attracts the domestic and foreign large-scale institutions paying so much attention on it. After it becomes the focus of relative domain, much achievement is also promoted one after another.The two In-wheels Driven Electric Vehicle (EV) is one of the developing directions for further EVs. Its development has been synchronizing with that of the researching and industrializing of EVs in the world. Because of its perfect controlling performance and potential in engineering applications, more and more efforts have been devoted to the two In-wheel Driven EV by both academicians and engineers alike. This thesis strives to the comprehensive study of the DSP control system of a two In-wheels Driven EV.Firstly, this thesis describes the development background of domestic and foreign Electric Vehicle explicitly, introduces the efforts which have done by domestic, foreign governments and the Auto Company emphatically. And also introduces the classification and the comparison of driven system.Secondly, BLDC (Brushless Direct Current) Electric Motor is the critical part of Electric Vehicle, this thesis analyzes its movement principle, involves massive detailed design such as, the operation principle of different position sensors, the all controlled electric circuit of different coils, each kind of control of BLDC specially the control using microcomputer, the speed rotation survey of electrical motor, as well as driven of In-wheel motor.Thirdly, bases on the traditional differential algorithm, This thesis takes the simple In-wheel Driven EV engineering project as background, bases on the design of its optimization of dynamic system performance and control, studies advanced vehicles differential control strategy thoroughly, proposes the In-wheel driven EV based on the TI-DSP2404A, and designs the hardware electric circuits from that. Last, this thesis involves research of DC/DC power supply, and gives the relevant design in order to make each chips work firmly, according to the input parameter of angle sensor, gets the relevant PWM waveforms, it proves the feasibility of differential control by PWM on EV.