Research On Hub-wheel Electric Vehicle Acceleration Slip Control Strategy

With the Energy shortage crisis and environmental problems increasingly protruding, the electric car has become an important topic of automobile industry in the world today. Many countries, especially in some advanced developed country have already made a lot of achievements in the field of electric vehicles. The development of electric vehicles has also been listed as one of the important content of China’s12th Five-Year Plan. Electronic control technology is not only the key point of the development of electric vehicles, but also a difficult in the world. Acceleration Slip Control plays an important role in improving vehicle safety, handling stability and drive acceleration performance. This paper, based on the subject project of National863and the independent innovation project of the Natural Science and Technology Fund of Wuhan University of Technology:"a new generation of electric wheel vehicle research and development", according to the process from horizontal comparison and longitudinal analysis to simulation experiment research and development, carry through a detailed study of the electric car wheel drive torque control strategy, designed a control method which based on the wheel Angle acceleration and sliding state observation. This method does not need exact test or the extreme real-time speed of the vehicle running, abandoned complex pavement status identification, with good control and strong robustness.The article focuses on domestic and foreign automobile drive-slip control technology and carried on the detailed comparative analysis, illustrates the current development of the electric wheel vehicle drive slip control strategy and its research results, and then combining previous research experience, through our own research and analysis, by establishing the model of vehicle simulation, after the comprehensive comparison of various control methods, choose fuzzy logic control strategy, establish the drive torque control method which based on the wheel Angle acceleration and the observation of sliding state, and on this basis for further thinking and research. Computing and simulation in MATLAB, we can see that the effect of the above control strategy of the Acceleration Slip Control is good, and has better adaptability and robustness. This article to elaborate on the principle of traction control as well as horizontal comparative analysis of various control strategies, and put forward two good effective control strategy, improve the driver of the vehicle accelerating performance, handling stability and the wheel motor working condition, provides a useful reference for the future traction control technology development.