LEAN-MOTION MECHANISM IN SIMULATED OPERATION DEVICE FOR TWO WHEELER

PROBLEM TO BE SOLVED: To provide a lean-motion mechanism which is inexpensive and has reliability which can cope with mass production. SOLUTION: Driver's upper body is leaned and his body weight is shifted in the direction vertical to the longitudinal direction of a shaft 103 in accordance with the conditions of the simulated operation. Thereby, the shaft 103 is distorted by a very small angle by the elasticity of an elastic body. The torsion angle is detected by a rotary encoder 108. At this time, the torque generated on the shaft 103 depends on the product of the difference of rotation angle between the shaft 103 and a stepping motor 107, and the torsional spring constant of the elastic body and, therefore, the rotation angle of the stepping motor 107 for obtaining the target torque is determined. By rotating the stepping motor 107 with this angle, the target torque can be obtained.