| 摘要 |
PROBLEM TO BE SOLVED: To acquire a center-of-gravity position lateral acceleration by correcting a lateral acceleration detection value by a lateral acceleration sensor loaded at a position separated from the center of gravity of a vehicle without using a yaw rate sensor detection value. SOLUTION: This center-of-gravity position lateral acceleration acquisition device is applied to a vehicle with a horizontal acceleration sensor 65 loaded at a position separated from the center of gravity G of the vehicle. This device determines the center-of-gravity position lateral acceleration Gyh by correcting the lateral acceleration detection value Gys without using a yaw rate detection value by a yaw rate sensor 64, using a relational equation obtained by deleting yaw rate Yr of the vehicle from a first relation (Gyh=Gys-Lx×dYr/dt) approximately established between the yaw rate Yr, the center-of-gravity position lateral acceleration Gyh and the lateral acceleration detection value Gys by the sensor 65 and a second relation (Yr=Gyh/V, V: vehicle speed) established in stable traveling where the vehicle performs orbital motion without rotation. Consequently, even in the event of failure of the yaw rate sensor 64, the center-of-gravity position lateral acceleration Gyh can be continuously accurately calculated. COPYRIGHT: (C)2007,JPO&INPIT |
