Aiming at the problems such as large volume of traditional shifter,layout position rigid,the impact of cab noise control because of increasing hole,and can not support intelligent parking, intelligent driving function development and implementation and other issues, the shift mechanism and rocker driving method were studied. The driver's shift habits, shift strategy, fault diagnosis and limping were sum-marised,a wire shift control system based on dual 16-bit microcontroller was proposed. The electronic signal instead of the mechanical posi-tion signal was used to identify gear information,and motor-driven was used instead of the traditional mechanical zipper,can quickly identify the current vehicle and stall state,through the motor closed-loop control to achieve accurate shift and gear information display. The results in-dicate that the system eliminates the constraints of traditional mechanical parts and gearbox linkage,greatly improve the design freedom,can effectively reduce the mechanical wear and tear,reduce the complexity of parts. And the shift mechanism is flexible and responsive.%针对传统换挡器体积大、布置位置死板、需要增加过孔影响驾驶室噪声控制,同时无法支持智能泊车和智能驾驶功能开发、实现等问题,对换挡机构、摇臂驱动方式等方面进行研究,对驾驶员换档习惯、换挡策略、故障诊断和跛行处理进行了归纳,提出了一种基于双16位单片机的线控换挡系统.该系统用电子信号代替了机械位置信号识别档位,用电机驱动代替了传统机械式拉索,能快速识别当前车辆的档位状态,通过电机闭环控制实现精准换挡和档位信息显示.研究结果表明:该系统可消除传统机械部件与变速箱联动的约束,极大提高了设计自由度,可有效减少机械磨损、降低部件复杂性,使换挡机制灵活多变、响应快、操作灵敏.
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