| Summary: | 碩士 === 南開科技大學 === 車輛與機電產業研究所 === 103 === Owing to the growth trend of the elder in the world, it becomes an important issue to develop their demand. The geron-velicle, a transportation automobile, is developed for the elder and disables as a driver. At the same time, developing battery electric vehicle is a mainstream trend because of the advocacy of green energy consciousness. Electric geron-vehicle is the movement of the elder’s demand, which integrates a transportation automobile with motor-in-wheel technology. Steering control significantly influences the handling, stability of the automobile. In the study, the design and making of Electric geron-vehicle were described and the steering characteristics of an electric geron-vehicle were analyzed by using front wheel steering and four wheel steering. Moreover, measuring instruments to obtain the yaw rate and simulation results compared with each other. The results of experiments show that can measure yaw rate of vehicle steering and the same trend with the simulation results. From the simulation results of different steering relationship, for the yaw rate of the vehicle, feedback four wheel steering was better than feed forward four wheel steering at high speed, but it was opposed for the slip angle. Front wheel steering was less stable than four wheel steering. At low speed, the yaw rate of front wheel steering is a smaller than others, but, the slip angle of front wheel steering higher than that of four wheel steering.
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