CENTROID POSITION ESTIMATION DEVICE AND CENTROID POSITION ESTIMATION METHOD OF VEHICLE

摘要

PROBLEM TO BE SOLVED: To provide a centroid position estimation device of a vehicle capable of more accurately estimating a centroid position on a spring.;SOLUTION: A vehicle centroid position estimation device 10 comprises: a rear shaft suspension load calculation part 41 for calculating loads F_L, F_R to an air suspension; a rear shaft roll moment calculation part 42 for calculating a roll moment M_xAS on a rear shaft; a rear shaft roll angle calculation part 43 for calculating a roll angle φ₂ of the rear shaft; an integrated roll rigidity calculation part 44 for, based on the load F_z, the roll moment M_xAS on the rear shaft and the roll angle φ₂, calculating integrated roll rigidity K_φ13 in before and after adjustment of vehicle height; and a lateral centroid position calculation part 45 for, based on the load F_z, the roll moment M_xAS on the rear shaft, the roll angle φ₂, and the integrated roll rigidity K_φ13, calculating a lateral centroid position y_cg.;SELECTED DRAWING: Figure 3;COPYRIGHT: (C)2017,JPO&INPIT