| 摘要 |
PROBLEM TO BE SOLVED: To reduce an error of a detail crank angle signal indicating a rotation angle position of a crank shaft which is more detail than a crank angle signal more than a conventional technology.SOLUTION: A signal interval calculation part 56 calculates a signal interval T(n) of a detail crank angle signal so that a first signal interval T(1) becomes the longest, and is gradually shortened thereafter when a predicted crank angle signal cycle T'(i+1) is shorter than the past crank angle signal cycle T(i), and the rotation of a crank shaft is considered to be accelerated. On the contrary, the signal interval calculation part calculates the signal interval T(n) of the detail crank angle signal so that the first signal interval T(1) becomes the shortest, and is gradually elongated thereafter when the predicted crank angle signal cycle T'(i+1) is longer than the past crank angle signal cycle T(i), and the rotation of the crank shaft is considered to be decelerated. The detail crank angle signal is outputted following the signal interval T(n) which is calculated as above. |
