| 摘要 |
An apparatus for sensing the absolute angular position of a rotatable shaft comprising one of eccentrically mounted gear having a bigger diameter of central mounting hole than the diameter of the said rotatable shaft, a permanent magnet, and an array of preferably four equally tangentially spaced magnetic field sensors positioned between the gear and the magnet along a line tangent to the gear, and close to the gear. An absolute angular position of rotatable shaft is provided with high accuracy by using a signal processing means and previously known signal amplifier circuitry.
|
