| 摘要 |
PROBLEM TO BE SOLVED: To sharply improve detection precision by adding a speed meter generator error learning means, a ground piece error learning means and an axle rate gyroscope output signal input and rate gyroscope error learning means, finally inputting map data, and determining the absolute position of a train. SOLUTION: The correction by speed meter generator error learning 14 is added to the position calculation error correction 5 of distance calculation 3 by an axle speed meter generator 1 to correct the absolute position (1) 6, and the correction by ground piece error learning 15 is added to the position calculation error correction 11 by a ground piece 8 and a vehicle piece 9 to correct the absolute position (2) 12. Gyroscope error learning 23 is added to the position calculation error correction 20 based on the acceleration detection 17 of a rate gyroscope 16, speed calculation 18 and distance calculation 19 for hybrid correction to obtain the absolute position (3) 21. A map data input is newly added to the absolute positions (1), (2), (3), and the true absolute position 13 is finally determined. |
