Patent ID: 7996131

Claim:
A tilt angle detecting apparatus for vehicle comprising: an angular velocity sensor for detecting an angular velocity of a vehicle which occurs in a roll direction of the vehicle; an unnecessary component removing means in which a first angular velocity value is preset up for a setting of a deadband used for removing an unnecessary component, said unnecessary component removing means having both the deadband for reducing a level of an output signal to zero or attenuating this level when an angular velocity detecting signal inputted from said angular velocity sensor has an angular velocity level equal to or less than said first angular velocity value, and a passband for allowing the angular velocity detecting signal to pass therethrough and outputting this angular velocity detecting signal when the angular velocity detecting signal has an angular velocity level exceeding said first angular velocity value, for outputting the angular velocity detecting signal from which the unnecessary component is removed; an arithmetic processing means for integrating the angular velocity detecting signal inputted from said unnecessary component removing means to output a signal having the integral value showing an angle; and an integral value resetting means in which an integral value resetting value which is a fixed value is preset up, for resetting the integral value showing the angle of the signal inputted from said arithmetic processing means to zero by using said integral value resetting value in such a way that the integral value does not diverge, and for outputting a signal showing a tilt angle in the roll direction of the vehicle.