MOTION CONTROLLER OF VEHICLE

摘要

PROBLEM TO BE SOLVED: To provide a motion controller of a vehicle capable of stabilizing a turn state of the vehicle using lateral acceleration feedback control. SOLUTION: This motion controller 10 of the vehicle calculates target lateral acceleration Gyt based on a value of inferred vehicle body speed Vso, a value of steering angleθs, and theoretical expression described at step 505. It calculates target lateral acceleration limit value Gytlimit at the time based on an inferred value of road surface friction coefficientμand a table described at step 510 and limits target lateral acceleration Gyt so that an absolute value of the target lateral acceleration Gyt becomes the target lateral acceleration limit value Gytlimit when an absolute value of the target lateral acceleration Gyt exceeds the target lateral acceleration limit value Gytlimit. It controls brake force of each wheel so that actual detected lateral acceleration Gy becomes the target lateral acceleration Gyt. As a result, a turn condition of the vehicle is stabilized without using an expensive yaw rate sensor. COPYRIGHT: (C)2004,JPO