DETECTION SYSTEM OF VELOCITY/ACCELERATION OF ROTATION WHEEL, AND CALCULATING METHOD OF VELOCITY/ACCELERATION OF ROTATION WHEEL

摘要

PROBLEM TO BE SOLVED: To provide a sensor that has a simple constitution, has low cost, is small, and can measure velocity and acceleration of a rotation wheel.;SOLUTION: This system for detecting velocity and/or acceleration of the rotation wheel has the sensor attached to the rotation wheel. The sensor includes a circuit having a plurality of resistors. Each resistor has resistance varying based on at least a part of the variation of the external magnetic field to the sensor. The sensor has a processing unit for generating a signal based on at least a part of the resistance of the resistor, and calculates the velocity and/or acceleration of the rotation wheel based on a part of the signal generated by at least the sensor.;COPYRIGHT: (C)2008,JPO&INPIT