公开(公告)号：US20190031470A1

公开(公告)日：2019-01-31

申请号：US16045170

申请日：2018-07-25

Applicant: Otis Elevator Company

Inventor： Shinichi Furuta ,  Takahiro Yamada ,  Keiji Hashimoto ,  SungGun Cho ,  Yaodong Chen

IPC: B66B5/00 ,  B66B1/30

Abstract: The present invention relates to braking torque detection for an elevator brake and belongs to the technical field of elevators. A braking torque detection method for an elevator brake according to the present invention comprises the following steps: a drive motor outputting a first detection torque for a first brake torque inspection; the drive motor stopping output of the detection torque in intermittent time periods when it is determined that a second brake torque inspection is required according to a result of the first brake torque inspection; and the drive motor outputting a second detection torque for the second brake torque inspection. The present invention can avoid overheating of a frequency converter in a continuous braking torque detection process and achieves good braking torque detection accuracy.