VEHICLE TRAVEL CONTROL SYSTEM

To provide a technique that is able to obtain a quantity of state of a gravity-center-position with higher accuracy by three accelerator sensors disposed in a vehicle.SOLUTION: A first accelerator sensor 2a is disposed at a position closer to one of wheels than a center-of-gravity position g1. A second accelerator sensor 2b is disposed in a region different from a region in which the first accelerator sensor 2a is disposed, of two regions partitioned by a virtual line 6 passing through the center-of-gravity position in a vehicle longitudinal direction. A third accelerator sensor 2c is disposed in a region different from the region in which the first accelerator sensor 2a is disposed, of two regions partitioned by a virtual line 8 passing through the center-of-gravity position in a vehicle lateral direction. At least one of a first condition that the third accelerator sensor 2c is located between the first accelerator sensor 2a and the second accelerator sensor 2b in the vehicle lateral direction and a second condition that the second accelerator sensor 2b is located between the first accelerator sensor 2a and the third accelerator sensor 2c in the vehicle longitudinal direction is satisfied.SELECTED DRAWING: Figure 2 【課題】車両に配置された３つの加速度センサにより、より高精度な重心位置の状態量を取得できる技術を提供する。【解決手段】第１の加速度センサ２ａは、重心位置ｇ１より１つの車輪に近い位置に配置される。第２の加速度センサ２ｂは、車両前後方向に重心位置を通る仮想線６によって仕切られた２つの領域のうち、第１の加速度センサ２ａが配置された領域とは異なる領域に配置される。第３の加速度センサ２ｃは、車両幅方向に重心位置を通る仮想線８によって仕切られた２つの領域のうち、第１の加速度センサ２ａが配置された領域とは異なる領域に配置される。第３の加速度センサ２ｃが、車両幅方向における第１の加速度センサ２ａと第２の加速度センサ２ｂとの間に位置する第１条件と、第２の加速度センサ２ｂが、車両前後方向における第１の加速度センサ２ａと第３の加速度センサ２ｃとの間に位置する第２条件の少なくとも一方が満たされる。【選択図】図２