Advantage of Electric Motor for Anti Skid Control of Electric Vehicle

摘要

AbstractElectric vehicles (EVs) are driven by motor, which is an excellent actuator for motion control compared to combustion engines or hydraulic braking systems. One essential advantage or motor is its fast and precise torque response. Thus, for EVs, fast, feedback control can be applied in EVs. In this paper such fast feedback control with motor is applied for anti skid control, Some experimental results show the anti skid effect of motor feedback controller which attempts to increase the equivalent wheel inertia. Then the influence of actuator's response delay is evaluated, resulting that such feedback control is difficult with slow actuator like hydraulic braking system. These discussions indicate the advantages of motor. however the actual braking systems in most EVs and hybrid EV (HEVs) are not pure electric ones at this moment. Therefore, regenerative braking control cooperating with hydraulic braking is also proposed and discussed. It reduces the braking distance by 20% in the simulations.Key Words: Electric vehiclesHybrid vehiclesAntilock braking system(ABS)Vehicle dynamicsMotion control Additional informationNotes on contributorsShin-ichiro SakaiShin-ichiro Sakai: He received the B.S., M.S. and PhD. degrees in electrical engineering from the University of Tokyo, in 1995, 1997 and 2000, respectively. In 2000 he worked as JSPS Research Fellow in the University of Tokyo and in 2001 he joined The Institute of Space and Astronautical Science as a research associate. His research fields are control theory and its industrial applications, typically, motion control in electric vehicles, control of satellite in space, mechatronics, etc.Yoichi HoriYoichi Hori: He received the Ph.D, degrees in electrical engineering from the University of Tokyo in 1983. He joined the Dept. of Elec. Eng. at the Univ. of Tokyo as a research associate in 1983. Since 2000, he has been a professor. His research fields are control theory and its industrial application. in particular, motion control, mechatronics, robotics, power electronics, power systems, etc.