RATE SENSOR FOR DETECTING ROTARY ANGULAR VELOCITY

摘要: PURPOSE:To improve the estimating accuracy of a dead-reckoning navigation apparatus by judging stopped state and straight running moving vehicle based on change in speed fluctuation rotary angular velocity, correcting output rate sensor using 0-point drift amount. CONSTITUTION:When Sn detected with vehicle- speed-change detecting part 1 is zero, rotary-angular-velocity-fluctuation 2 detects Dn 10 as velocity when becomes constant. In an 0-point-drift-amount computing 3, computed amount OD. 0-point-drift 4, OD subtracted from correction movement vehicle. When which exceeds specified value, it judged that line relationship between predetermined Dn. The similar performed.