Owing to noticeable differences of the characters between the electrical and the conventional gasoline-powered motorcycles, such as heavier in weight, lower in mass center position and slower in forward speed, the control and design considerations of the electrical motorcycles are not the same as conventional motorcycles. The rider upper body lean control system is considered as the only control action to analyze and simulate the stability and the perception of riding comfort of the rider-motorcycle system in different riding conditions and parameter designs. The equations of lateral motion of an electrical motorcycle, which includes the rider upper body leaning motion, are derived first from Newton mechanics. Via this dynamics model and its associated transfer functions at various speeds, perception of riding comfort is defined as the damping ratio of frequency domain Bode plots in classical control theory. It was found that the tendency of the stability is the same under the straight-line and the cornering motions, but significant differences are shown for different parameter designs of the electrical motorcycle. The effect on the perception of riding comfort issue for changing mass center position, total weight of the motorcycle, the wheel-base, the front fork rake angle and the front wheel trail distance of the motorcycle is discussed. On the premise of the stability, the maximum damping ratio is used to represent the riding response of the motorcycle to find the best perception of riding comfort. By the analysis results, if the mass center is moved forward, the wheel-base is shortened, the front fork rake angle is steepened and the front wheel trail distance of the current design of electrical motorcycles in the market is shortened, a better perception of riding comfort is achieved. From the user's point of view, the analysis method of perception of riding comfort can be a supplement to the analysis of the stability of motorcycles.
Design parameters study on the stability and perception of riding comfort of the electrical motorcycles under rider leaning
Untersuchung der Einflussparameter auf die Stabilität von Motorrädern und auf das Komfortgefühl von Radfahrern
Mechatronics ; 13 , 1 ; 49-76
2003
28 Seiten, 13 Bilder, 5 Tabellen, 15 Quellen
Article (Journal)
English
A nonlinear virtual rider for motorcycles
Taylor & Francis Verlag | 2011
|Stability Analysis of Tandem Riding on Motorcycles
SAE Technical Papers | 2006
|A nonlinear virtual rider for motorcycles
Online Contents | 2011
|A nonlinear virtual rider for motorcycles
Automotive engineering | 2011
|A Non Linear Rider Model for Motorcycles
British Library Conference Proceedings | 2006
|