Patent ID: 6463399
Filing Date: 2002-10-08
Classification: B60G,B60T,B62D,G01D

Abstract:
A rotation angular speed detection apparatus comprising:a receiving part to receive an angular signal at predetermined time intervals from a rotation angle sensor that detects a rotation angle of a rotating body with respect to a reference angle; a storage part to store the rotation angle based on the received angular signal; and a control part to divide a difference between a first arbitrary angle of the rotation angles stored in the storage part and a second angle stored before the first angle by a time required from storing of the second angle to storing of the first angle to detect a rotation angular speed; wherein when the difference between the first angle and the second angle is less than a predetermined value, the control part determines, from the rotation angles stored in the storage part, a third angle stored before the second angle in which a difference between the first angle and the third angle is more than the predetermined value, and wherein the control part divides the difference between the first angle and the third angle by a time required from storing of the third angle to storing of the first angle to detect the rotation angular speed.