| 摘要 |
The present invention is directed to a machine (10) with a position feedback system and a method for use thereof. The machine (10) includes at least one movable element (58a-b, 60a-b, 62a-b, 64a-b, 66a-b) mounted for movement on a path (P1, P2) and at least one programmable controller (30, 94). The machine (10) further includes at least two absolute or magnetostrictive sensors (74, 88a-d) or the machine (10) includes an absolute sensor (74, 88a-d) and a non-absolute sensor (73, 82a-c). The programmable controller (30, 94) uses positional information from the sensors to determine the position of the movable elements (58a-b, 60a-b, 62a-b, 64a-b, 66a-b) on the path (P1, P2) and control the movable elements (58a-b, 60a-b, 62a-b, 64a-b, 66a-b). The method includes determining a known position for the movable elements (58a-b, 60a-b, 62a-b, 64a-b, 66a-b), linking at least two magnetostrictive sensors (88a-d) into one virtual sensor, and/or performing commutation alignment for the movable elements (58a-b, 60a-b, 62a-b, 64a-b, 66a-b). Determining the position and commutation alignment can occur when the movable elements (58a-b, 60a-b, 62a-b, 64a-b, 66a-b) are stationary or moving. |
