| 摘要 |
<p>A door device of an elevator comprises a resolver (17) which detects the rotation of an electric motor (9) to output the rotation acceleration, a current sensor (18) for detecting the current of the electric motor (9), a sequential door weight estimation means (31) which receives the rotation acceleration of the electric motor (9), the current flowing in the electric motor (9), and an estimated door weight feedback value which is outputted from the sequential door weight estimation means (31) itself, and a speed pattern generator (19) which determines the engagement of the door from the output from the door weight estimation means (31). With this configuration, it is possible to detect the engagement position of the door device of the elevator with high accuracy in real time.</p> |
