| 摘要 |
PROBLEM TO BE SOLVED: To determine when a door control part 45 that applies current to a permanent magnet synchronous electric motor 41 driving an elevator door should update the recognition of a magnetic pole position necessary for current control.SOLUTION: An elevator control device 5 for instructing the door control part 45 to open/close a door instructs the door control part 45 to execute magnetic pole position estimation control for updating the recognition since there is a possibility of a recognition gap on the magnetic pole position when it is detected that the state of an elevator is switched from a non-power supply state to a power supply state, when the door is not opened fully in spite of the instruction that the door be opened, or when the door is not fully closed in spite of the instruction that the door be closed.SELECTED DRAWING: Figure 9 |
