Patent ID: 7747367
Filing Date: 2010-06-29
Classification: B60W

Abstract:
1. A vehicle physical quantity estimating device comprising: a longitudinal vehicle body velocity estimating unit, estimating, based on vehicle wheel velocities of each of the wheels, a longitudinal vehicle body velocity that is the vehicle body velocity in the forward-reverse direction of a vehicle; a longitudinal/lateral acceleration state value deviation computing unit, computing a deviation in a longitudinal acceleration state value and a deviation in a lateral acceleration state value that develop according to a vehicle attitude angle, based on a low pass filter, carrying out processing that lets only signals corresponding to motions that need attention pass through from signals that express the deviation in a longitudinal acceleration state value and the deviation in a lateral acceleration state value; and an attitude angle estimating unit, estimating the attitude angle as a vehicle physical quantity based on the sensor signal(s), a signal representing the deviation in a longitudinal acceleration state value after low pass filter processing, and a signal representing the deviation in a lateral acceleration state value after low pass filter processing.