Patent ID: 9188602
Filing Date: 2015-11-17
Classification: B60T,G01P

Abstract:
1. An acceleration detection device, comprising: a neutral control entry calculation unit that calculates an entry acceleration after a predetermined time has elapsed from a start of neutral control; a neutral control exit calculation unit that calculates an exit acceleration from an end of the neutral control to a starting clutch engagement; a neutral control change calculation unit that calculates an acceleration change by subtracting the exit acceleration from the entry acceleration; an acceleration changes estimating unit that estimates a change in acceleration based on a road surface gradient calculated from the entry acceleration and a gradient-acceleration map; a correction amount calculation unit that calculates a correction amount by subtracting the estimated change in acceleration from the calculated acceleration change calculated by the neutral control change calculation unit; a correction amount restriction unit that calculates a restricted correction amount to limit a magnitude of the correction amount based on a previously determined restricted correction amount and a preset limit value; and a zero point correction unit that corrects a zero point position of an acceleration sensor signal by adding the restricted correction amount to the zero point position based on an acceleration sensor signal after neutral control at transition from a vehicle stationary state to the running state, wherein the restricted correction amount is reset to zero after the zero point position is corrected.