Aim To study the transient response of motorcycle with one tire colliding on ground. Methods Taking the colliding velocity as an independent variable, the changing law of the biggest collision inertia load of motorcycle′s sprung mass, unsprung mass and driver was studied, while its front and rear tire colliding on ground respectively.Results and Conclusion According to the working conditions of motorcycle shock absorbers and the characteristic of response curve, the transient response of the acceleration, the velocity and the displacement were discussed section by section. And the result of simulating the actual JH125 motorcycle was given.
Rough set theory is used to treat the data of vehicle transmission system faults. The minimum fault feature vector can be obtained by calculating the importance and dependency of each attribute. Real time diagnosis, as a result, can be actualized. Ultimate decision making can be done by analyzing the consistency of decision information. The result shows that rough set theory is useful and possesses its unique merits in this field.
