DEVICE FOR DETECTING DRIVE WHEEL SPEED OF VEHICLE

摘要

PURPOSE:To achieve 'high-selection' of left and right drive wheel speeds by considering the difference between inner and outer wheels of a drive wheel when the wheel turns. CONSTITUTION:The difference DELTAV between inner and outer wheels of left and right drive wheels during turning is calculated by an inner/outer wheel difference calculation means 22 based on a steering angle delta which is output by a steering angle detection means 4 and a side acceleration G which is output by a side acceleration detection means 5. A drive wheel speed compensation means 23 performs compensation for adding and subtracting half of the above inner/outer wheel difference DELTAV to and from drive wheel speeds VFL and FFR which are output by left and right drive wheel speed detection means 1FL and 1FR and compensates increase/decrease of the drive wheel speeds VFL and VFR due to influence of turning. A high-selection means 24 selects the larger speed when the difference between the compensated drive wheel speeds VFL and VFR exceeds a specified value, thus selecting the speed of the drive wheel which actually slips as a final drive wheel speed Vw.