| 摘要 |
According to the invention: at least two pairs of magnets (31.1, 31.2) are arranged near one another on supports (32, 34), the said pairs of magnets (31.1, 31.2) and the said supports (32, 34) form, when the item to be stabilized (30) is in the required angular position, a closed magnetic circuit (except for the air gap), with magnets (33, 34) placed in such a direction that their north and south poles successively alternate with one another along said magnetic circuit, an item (37), sensitive to the magnetic field, is attached to the fixed part and placed inside the closed magnetic circuit, said sensitive item (37) supplies a logic output state corresponding to the “item to be stabilized in the required angular position” when the detected field is less than a predetermined maximum threshold, and a logic state corresponding to the “item to be stabilized not in the required angular position”, when the detected field is greater than a minimum predetermined threshold. |
