REAR WHEEL STEERING ANGLE CONTROL DEVICE FOR VEHICLE

摘要

PURPOSE:To remove a spear-shaped nozzle superposed on a yaw rate signal with simple structure without causing the phase delay of the signal by providing a digital filter for holding the output value at the time of the rate-of-change of the input value of yaw rate signals inputted from a yaw rate sensor being larger than the set value. CONSTITUTION:An analog buffer 22 takes in signals from a rear wheel steering angle sensor 12 and a yaw rate sensor 18, an A/D converter 23 performs analog digital conversion, and a driving circuit 24 supplies a direct current servo motor 2 with a current corresponding to a current command signal If from a microcomputer 19. The microcomputer judges, on the basis of the signal from the yaw rate sensor 18, whether the absolute value of the difference between the present yaw rate input value uj and the preceding yaw rate uj-1 is larger than the present value (a), and outputs the preceding yaw rate output value yj-1 as the present yaw rate yj when the absolute value of the difference is larger than the preset value (a).