公开(公告)号：EP3102522B1

公开(公告)日：2019-11-13

申请号：EP14881761.2

申请日：2014-02-06

Applicant: Otis Elevator Company

Inventor： LOTFI, Amir ,  ROBERTS, Randall, Keith ,  THEBEAU, Ronnie, E. ,  GARFINKEL, Michael ,  PIEDRA, Edward ,  HANVEY, Dennis ,  RUSH, Daniel

IPC: B66B1/36 ,  B66B5/16 ,  B66B1/40 ,  B66B1/44

公开(公告)号：EP3102522A2

公开(公告)日：2016-12-14

申请号：EP14881761.2

申请日：2014-02-06

Applicant: Otis Elevator Company

Inventor： LOTFI, Amir ,  ROBERTS, Randall, Keith ,  THEBEAU, Ronnie, E. ,  GARFINKEL, Michael ,  PIEDRA, Edward ,  HANVEY, Dennis ,  RUSH, Daniel

IPC: B66B1/36 ,  B66B5/16

CPC classification number: B66B1/36 ,  B66B1/30 ,  B66B1/32 ,  B66B1/40 ,  B66B1/44 ,  B66B9/00

Abstract: Embodiments are directed to determining that an elevator car of an elevator system is approaching a landing, obtaining, by a controller, a value for at least one parameter associated with the elevator system based on the determination that the elevator car is approaching the landing, determining that the elevator car arrives at the landing within a threshold distance, determining, by the controller, when to engage in at least one of a brake cycling operation and a power cycling operation based on the value for the at least one parameter and based on determining that the elevator car arrives at the landing within the threshold distance, and initiating the at least one of a brake cycling operation and a power cycling operation at a time corresponding to the determination of when to engage in the at least one of a brake cycling operation and a power cycling operation.

公开(公告)号：EP1963220A1

公开(公告)日：2008-09-03

申请号：EP05854864.5

申请日：2005-12-20

Applicant: Otis Elevator Company

Inventor： PIEDRA, Edward ,  AGIRMAN, Ismail ,  MARVIN, Daryl

IPC: B66B1/28

CPC classification number: B66B1/30

Abstract: An elevator drive assembly (30) includes a voltage regulator (40) that selectively introduces current under certain conditions. In one example, the voltage regulator (40) introduces a negative flux current to an electric motor (32) when the motor (32) is operating under conditions corresponding to constant speed movement of an elevator car (22). In one example, the added negative flux current effectively reduces the back-EMF voltage of the motor (32) during the constant velocity portion of an elevator run. A disclosed example includes controlling the added current to maintain control over a motor torque constant, which becomes a function of the added current.