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Improvement of bike stability control based on the self-adjusting biker posture approach

When the bicycle is driven on a road, the COG (center of gravity) should always locate on the contact line, otherwise it will fall down. Due to the sloped terrain, the COG moves toward any contact point of bicycle's wheel, thus the stability become worse. This paper mainly studies a seat self-adjusting approach of a bicycle then to realize a stably driven on a sloped and associated with an unknown slope. The inclined angle of the uphill or downhill road is sensed based on a linearly potentiometer which is mounted on a front tube of the bicycle. By using this sensed signals, the system controller immediately command that designed special compensating mechanism which is based on PID control approaches to adjust the rider's seat. Finally, the center of mass would be located in the contact line. In order to verify the effectiveness of our proposed approach, some experiments are carried out in our laboratory and their results are also presented in this paper to show the validity of the proposed method.