Method of improving response time in a vehicle active tilt control system

摘要

A method is provided for improving response time in a vehicle active tilt control system having front and rear stabilizer bars adjustable by front and rear hydraulic actuators which are movable in first and second opposing directions for adjusting vehicle body roll resistance provided by the stabilizer bars, and having a pressure control valve for controlling hydraulic pressure to the actuators. The method includes the following steps: a) operating only a single lateral accelerometer to determine the direction and magnitude of lateral acceleration during vehicle maneuvers; b) establishing the direction of movement of the front and rear hydraulic actuators in response to the determined direction of lateral acceleration; c) adjusting the pressure control valve in response to the determined magnitude of lateral acceleration; d) determining the rate of change of the magnitude of lateral acceleration as the magnitude of lateral acceleration decreases past a predetermined first threshold; and e) switching direction of movement of the front and rear hydraulic actuators in response to the determined rate of change of the magnitude of lateral acceleration, thereby anticipating directional changes in lateral acceleration to improve response time in adjusting vehicle body roll resistance during vehicle maneuvers.