Development of wire controlled shift controller based on automatic transmission
                                                CHEN Zhen wen, HE Xiao ni, FAN Han mao, TAN Huo nan, LIU Zhi gang
                             (Automotive Engineering Institute, Guangzhou Automobile Group Co., Ltd., Guangzhou 511434, China)

Abstract: 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 summarised, a wire shift control system based on dual 16 bit microcontroller was proposed. The electronic signal instead of the mechanical position 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 indicate 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.

Key words: wire controlled shifter, automatic transmission; controller design; vehicle test