Journal of System Design and Dynamics
Online ISSN : 1881-3046
ISSN-L : 1881-3046
Front-Steering Assist Control System Design for a Motorcycle Stabilization during Braking
Shintaroh MURAKAMIHidekazu NISHIMURAShaopeng ZHU
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2012 Volume 6 Issue 4 Pages 431-446


In braking situations, it is known that a motorcycle may become unstable. In this paper, a front-steering assist control is designed to stabilize a motorcycle during braking. The rider-motorcycle system with its pitching motions is linearized around an equilibrium point of quasi-steady state straight running with constant deceleration. From the viewpoints of eigenvalues and frequency responses, the linearized model is analyzed and a reduced-order model is obtained to design the control system by using H control theory. By carrying out simulations, it is demonstrated that the control system can stabilize a motorcycle during braking when receiving a sudden disturbance from the front wheel, and its applicable scope is discussed for several situations including different maneuvering of a rider.

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© 2012 by The Japan Society of Mechanical Engineers
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