A design method for booster motor of brake-by-wire system based on intelligent electric vehicle

The brake-by-wire (BBW) system is an essential part of the intelligent electric vehicle, which is determination of the braking safety and recovery efficiency. To design a safe and efficient booster motor, the design of booster motor for BBW system is discussed in this paper. Through comparative analysis, experimental simulation and assessment argument, the scheme of designing a booster motor for brake-by-wire system is completely described. First, the mainstream structure of the BBW system and the main challenges it faces in the assisted motor are discussed. Second, comparing the motors of different types and structures, the motor body and control system scheme suitable for the characteristics of the booster motor system are determined. Then, through the simulation analysis of the ansoft and matlab, the optimization scheme of the motor and performance improvement are proposed. Further, through the actual design of a set of the booster motor system, the safe and efficient motor designing are verified, and the problems involving functional safety are discussed. Finally, focus on the problem while simulation and experiment, some important countermeasures to improve current technology and prospect of in-depth study are pointed out. [Display omitted] •Explain the principle of the power-assisted motor for brake-by-wire, and propose a suitable structure.•Design the electrical structure and mechanical structure of the booster motor for electronically controlled braking.•Combining the simulation analysis through ansoft and matlab, an optimization scheme is proposed for the motor and performance improvement.•The proposed optimization scheme meets the performance and parameter requirements of the motor.