MULTI-LEVEL ROTATIONAL RESOLVERS USING INDUCTIVE SENSORS

摘要

In described examples, a rotational resolver system includes a rotational shaft (215) to which at least one eccentric conductive coarse resolution disc (205) is fixed and to which at least one conductive fine resolution disc (210) is also fixed. The fine resolution disc (210) defines generally semicircular protruding edge segments (230). At least one conductive coarse-disc sensing coil (220, 225) is disposed adjacent an edge of the coarse resolution disc (205), and at least one conductive fine-disc sensing coil (235, 240) is disposed adjacent the edge of the fine resolution disc (210). These coils may be oriented for axial sensing of the respective disc.