| 摘要 |
The sensor comprises a structure (5) with a periodic distribution of references (6a), and first and second electrical detector means (A, B) for furnishing a pulse each time they detect a reference (6a) of this structure (5). The detector means (A, B) and the structure (5) are connected to the steering column (2) so that rotation of this column (2) in one sense, or in the opposite sense, causes a corresponding relative movement between the structure (5) and the detector means (A, B) in one direction or sense, or in the opposite direction or sense. The first and second detector means (A, B) are disposed at a relative distance different from the period of distribution of the references (6a) of the structure (5) (and from multiples thereof) in such a way that, when the steering is operated, the pulses (Va, Vb) emitted by these detector means (A, B) have a phase difference the sign of which is indicative of the direction of steering, and the number of pulses emitted between two instants is a measure of the angle through which the steering column (2) has rotated between these instants. |
