发明名称 Elevator control apparatus
摘要 An elevator cage control apparatus includes a brake coil energized and deenergized by start and stop command signals to move and restrain the cage, respectively. A current detector detects current flowing through the brake coil. A counter counts a time interval beginning at generation of the stop command signal and ending when current in the brake control gradually decreasing increases instantaneously and a time interval beginning at generation of the start command signal and ending when current in the brake coil gradually increasing decreases instantaneously. A memory stores the counted time intervals. A drive command issuer commands a motor driving circuit to stop and start the cage, after the counted time intervals stored in the memory have lapsed, respectively.
申请公布号 US4974703(A) 申请公布日期 1990.12.04
申请号 US19890364179 申请日期 1989.06.12
申请人 MITSUBISHI ELECTRIC CORP 发明人 NOMURA, MASAMI
分类号 B66B1/32 主分类号 B66B1/32
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