| 摘要 |
<p>An angle transducer comprising a first disk, the rotor (1), with circularly arranged and radially directed receiver electrodes (2) and a second disk, the stator (4), equipped with circularly arranged and radially directed transmitter electrodes (3) arranged at the same radius as the receiver electrodes (2) and with a fixed separation between the receiver electrodes and the transmitter electrodes on the two disks, whereby the disks (1, 4) are arranged coaxially (6) and rotatable relative to each other, and the disks are further separated by a thin air-gap that makes possible a capacitive or an inductive coupling between the electrodes systems on the receiver disk (1) and the transmitter disk (4), whereby the transmitter electrodes (3) are each supplied with an alternating voltage with different phases for neighbouring electrodes, whereby the number of supply phases, ζ, is greater than two, and the separation of transmitter electrodes = the separation of receiver electrodes/ζ. The transmitter electrodes (3) of the stator (4) are geometrically arranged such that errors in their geometry relative to the geometry of the receiver electrodes (2) produce equal but opposite error signals in the receiver electrodes (2) of the rotor (1).</p> |
