| 摘要 |
According to the invention: at least two pairs of magnets (31.1, 31.2) are arranged adjacent to one another on mountings (32, 34); said pairs of magnets (31.1, 31.2) and said mountings (32, 34) form, when the element to be stabilised is in the required angular position, a closed magnetic circuit (with the exception of the air gap), the magnets (33, 34) being oriented such that the north and south poles thereof alternate along said magnetic circuit; an element (37), which is sensitive to the magnetic field, is attached to the stationary portion and arranged inside the closed magnetic circuit; said sensitive element (37) outputs an output logic state corresponding to the "element to be stabilised in the required angular position" when the detected field is lower than a predetermined maximum threshold, and a logic state corresponding to "element to be stabilised outside of the required angular position" when the detected field is higher than a predetermined minimum threshold. |
