关键词: 靶车；挂挡机构；自动换挡控制；控制器；控制软件

Abstract: In this paper, the linear push-rod shift mechanism of target vehicles is transformed into automatic shift. In the mechanical structure, an electric push rod is adopted to push the shift lever for shift operation. By precisely controlling the expansion length of the push rod motor, the shift rod can be freely switched between R, N and D gears. A special controller is developed, which can realize the forward and reverse control of the pusher motor, and can collect the displacement data of the stretch length of the pusher motor in real time. A complete set of logic control software is designed, which can realize the closed-loop control of gear position by receiving the target gear position command and the current gear state feedback continuously. The results show that the system is stable, reliable and meets the working requirements.

Key words: Target vehicle; Gear shifting mechanism; Automatic shift control; Controller; Control software