The invention discloses a double-motor steer-by-wire system based on a double-winding motor and a multi-objective optimization method. The system comprises a mechanical transmission module, a first motor power assisting module, a double-winding motor power assisting module and a main controller. The two motors are both arranged on the steering tie rod, so that mechanical coupling and interferenceof motor assistance are reduced, and the reliability of a steering system is improved; the working mode that the two windings of the double-winding motor work at the same time is adopted, so that thedouble-winding motor can output larger torque in a limited mounting space compared with a single-winding motor; a motor winding redundancy function is achieved, when one set of winding breaks down, the other set of winding can still drive the motor to generate power-assisted torque, and the driving safety of the automobile is enhanced; and the key parameters of the steering system are optimized based on an NSGA-II multi-objective optimization algorithm, so that a group of solution sets with good comprehensive steering performance can be obtained.
本发明公开了一种基于双绕组电机的双电机线控转向系统及多目标优化方法,系统包括:机械传动模块、第一电机助力模块、双绕组电机助力模块及主控制器;本发明将两个电机均布置转向横拉杆上,减少了电机助力的机械耦合和干涉,提高了转向系统可靠性;并且采用了双绕组电机两个绕组同时工作的工作模式,使双绕组电机在有限的安装空间内,相对于单绕组电机能输出更大的力矩;而且具备电机绕组冗余功能,一套绕组故障,另一套绕组仍能驱动电机产生助力转矩,增强了汽车的行驶安全性;又基于NSGA‑II的多目标优化算法对转向系统关键参数进行优化,得到综合转向性能较好的一组解集。
Dual-motor steer-by-wire system based on dual-winding motor and multi-objective optimization method
基于双绕组电机的双电机线控转向系统及多目标优化方法
2020-04-24
Patent
Electronic Resource
Chinese
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