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公开(公告)号：US10472206B2
公开(公告)日：2019-11-12
申请号：US15366648
申请日：2016-12-01
Applicant: Otis Elevator Company
Inventor： Randall Roberts , David Ginsberg , Walter Thomas Schmidt , Konda Reddy Chevva
Abstract: A multi-car ropeless elevator system includes at least one lane. An elevator car is arranged in the at least one lane. A linear motor system includes a plurality of stationary motor primary sections extending along the at least one lane and at least one moveable motor secondary section mounted to the elevator car. A plurality of sensors is operatively connected to the linear motor system. Each of the plurality of sensors is operatively associated with a corresponding one of the plurality of stationary motor primary sections. A sensor failure detection and fusion system is operatively connected to each of the plurality of sensors. The sensor failure detection and fusion system operates to identify failures in one or more of the plurality of sensors and fuse data received from remaining ones of the plurality of sensors.
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公开(公告)号：US20190097551A1
公开(公告)日：2019-03-28
申请号：US15718607
申请日：2017-09-28
Applicant: Otis Elevator Company
Inventor： Prasanna Nagarajan , Shashank Krishnamurthy , Konda Reddy Chevva
Abstract: A system includes a converter operatively connected to an alternating current (AC) power source and a direct current (DC) bus, an inverter operatively connected to a motor and the DC bus, and a controller. The converter includes a first plurality of switching devices in selective communication with each phase of the AC power source and the DC bus. The inverter includes a second plurality of switching devices in selective communication with each phase of the motor and the DC bus. The controller is operable to command dropping of a brake through a passive delay circuit responsive to an emergency stop condition for a load driven by the motor and reduce a voltage on the DC bus by dropping at least one phase of the AC power source and/or using a dynamic braking resistor prior to the brake physically dropping.
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公开(公告)号：US09840395B2
公开(公告)日：2017-12-12
申请号：US15214648
申请日：2016-07-20
Applicant: Otis Elevator Company
Inventor： Randall Roberts , David Ginsberg , Konda Reddy Chevva , Walter Thomas Schmidt
CPC classification number: B66B1/30 , B66B9/003 , B66B11/0407 , H02K41/031
Abstract: According to an aspect, an elevator system includes a propulsion system having a plurality of motor segments forming a primary portion and a plurality of drives to impart force on a secondary portion coupled to an elevator car. The elevator system also includes a controller operable to identify a local neighborhood of the drives and determine a health status of each of the drives within the local neighborhood. The controller is further operable to adjust a thrust command per active drive of the local neighborhood based on at least one of the health status and a position of each active drive of the local neighborhood with respect to the secondary portion.
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公开(公告)号：US20170158461A1
公开(公告)日：2017-06-08
申请号：US15366577
申请日：2016-12-01
Applicant: Otis Elevator Company
Inventor： Randall Roberts , David Ginsberg , Konda Reddy Chevva , Walter Thomas Schmidt
CPC classification number: B66B1/30 , B66B9/003 , B66B11/0407
Abstract: An elevator system includes a lane and at least one rail extending along the lane. An elevator car is arranged in the lane and is operatively coupled to the at least one rail. The elevator car has a predetermined alignment relative to the at least one rail. A propulsion system is operatively connected between the elevator car and the at least one rail. A thrust and moment control system is operatively connected to the propulsion system. The thrust and moment control system selectively controls the propulsion system to substantially maintain the predetermined alignment of the elevator car relative to the at least one rail.
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5.发明授权公开(公告)号：US10532908B2
公开(公告)日：2020-01-14
申请号：US15366577
申请日：2016-12-01
Applicant: Otis Elevator Company
Inventor： Randall Roberts , David Ginsberg , Konda Reddy Chevva , Walter Thomas Schmidt
Abstract: An elevator system includes a lane and at least one rail extending along the lane. An elevator car is arranged in the lane and is operatively coupled to the at least one rail. The elevator car has a predetermined alignment relative to the at least one rail. A propulsion system is operatively connected between the elevator car and the at least one rail. A thrust and moment control system is operatively connected to the propulsion system. The thrust and moment control system selectively controls the propulsion system to substantially maintain the predetermined alignment of the elevator car relative to the at least one rail.
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Patent Agency Ranking
公开(公告)号：US20170158462A1
公开(公告)日：2017-06-08
申请号：US15366648
申请日：2016-12-01
Applicant: Otis Elevator Company
Inventor： Randall Roberts , David Ginsberg , Walter Thomas Schmidt , Konda Reddy Chevva
CPC classification number: B66B5/0018 , B66B9/003 , B66B11/0407
Abstract: A multi-car ropeless elevator system includes at least one lane. An elevator car is arranged in the at least one lane. A linear motor system includes a plurality of stationary motor primary sections extending along the at least one lane and at least one moveable motor secondary section mounted to the elevator car. A plurality of sensors is operatively connected to the linear motor system. Each of the plurality of sensors is operatively associated with a corresponding one of the plurality of stationary motor primary sections. A sensor failure detection and fusion system is operatively connected to each of the plurality of sensors. The sensor failure detection and fusion system operates to identify failures in one or more of the plurality of sensors and fuse data received from remaining ones of the plurality of sensors.
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公开(公告)号：US20170036887A1
公开(公告)日：2017-02-09
申请号：US15214648
申请日：2016-07-20
Applicant: Otis Elevator Company
Inventor： Randall Roberts , David Ginsberg , Konda Reddy Chevva , Walter Thomas Schmidt
CPC classification number: B66B1/30 , B66B9/003 , B66B11/0407 , H02K41/031
Abstract: According to an aspect, an elevator system includes a propulsion system having a plurality of motor segments forming a primary portion and a plurality of drives to impart force on a secondary portion coupled to an elevator car. The elevator system also includes a controller operable to identify a local neighborhood of the drives and determine a health status of each of the drives within the local neighborhood. The controller is further operable to adjust a thrust command per active drive of the local neighborhood based on at least one of the health status and a position of each active drive of the local neighborhood with respect to the secondary portion.
Abstract translation: 根据一方面，一种电梯系统包括具有形成主要部分的多个电动机段和多个驱动器的推进系统，以在耦合到电梯轿厢的次级部分上施加力。 电梯系统还包括控制器，其可操作以识别驱动器的本地邻域并且确定本地邻域内的每个驱动器的健康状态。 控制器还可操作以基于健康状态和局部邻域相对于次要部分的每个主动驱动器的位置中的至少一个来调整每个主动驱动局部邻域的推力指令。
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公开(公告)号：US11296623B2
公开(公告)日：2022-04-05
申请号：US16862961
申请日：2020-04-30
Applicant: Otis Elevator Company
Inventor： Prasanna Nagarajan , Shashank Krishnamurthy , Konda Reddy Chevva
Abstract: A system includes a converter operatively connected to an alternating current (AC) power source and a direct current (DC) bus, an inverter operatively connected to a motor and the DC bus, and a controller. The converter includes a first plurality of switching devices in selective communication with each phase of the AC power source and the DC bus. The inverter includes a second plurality of switching devices in selective communication with each phase of a plurality of phases of the motor and the DC bus. The controller is operable to command dropping of a brake through a passive delay circuit responsive to detection of an emergency stop condition for a load driven by the motor and reduce a voltage on the DC bus by dropping at least one phase of the AC power source and/or using a dynamic braking resistor prior to the brake physically dropping.
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公开(公告)号：US11235948B2
公开(公告)日：2022-02-01
申请号：US15924687
申请日：2018-03-19
Applicant: Otis Elevator Company
Inventor： Edward Piedra , Randy Roberts , David Ginsberg , Ronnie E. Thebeau , Konda Reddy Chevva , XiaoBin Tang
Abstract: Methods and systems of controlling elevators including detecting a landing stop for an elevator car, measuring load information associated with the stop, controlling stopping of the elevator at the landing using a machine based on at least one of the detected landing and the measured load information and performing dynamic compensation control of a motion state of the elevator with a computing system and the elevator machine. The dynamic compensation control includes receiving motion state information related to at least one motion state of the elevator car at the computing system, receiving the landing and load information at the computing system, applying a filter to the received information and generating a first control signal, and producing a control output from the first control signal to control the elevator machine to minimize oscillations, vibrations, excessive position deflections, and/or bounce of the elevator car at the detected landing.
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公开(公告)号：US20200259430A1
公开(公告)日：2020-08-13
申请号：US16862961
申请日：2020-04-30
Applicant: Otis Elevator Company
Inventor： Prasanna Nagarajan , Shashank Krishnamurthy , Konda Reddy Chevva
Abstract: A system includes a converter operatively connected to an alternating current (AC) power source and a direct current (DC) bus, an inverter operatively connected to a motor and the DC bus, and a controller. The converter includes a first plurality of switching devices in selective communication with each phase of the AC power source and the DC bus. The inverter includes a second plurality of switching devices in selective communication with each phase of a plurality of phases of the motor and the DC bus. The controller is operable to command dropping of a brake through a passive delay circuit responsive to detection of an emergency stop condition for a load driven by the motor and reduce a voltage on the DC bus by dropping at least one phase of the AC power source and/or using a dynamic braking resistor prior to the brake physically dropping.
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