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1.发明申请
公开(公告)号：WO2017132525A1
公开(公告)日：2017-08-03
申请号：PCT/US2017/015365
申请日：2017-01-27
Applicant: MAGNETEK, INC.
Inventor： ANDERSON, Garry , KOBISKE, Mark , BACKMAN, John , BUTTE, Ed
CPC classification number: H02P1/028 , B66B1/304 , B66B2201/34
Abstract: A method and system for reducing -rollback in a counterbalancing system as a holding brake is released is disclosed. A limited amount of movement of a drive shaft is present in. the holding brake. A motor drive provides current to the motor with the holding brake set such that a torque is applied at the drive shaft. The current is controlled to generate torque in both directions. The limited amount of movement in the brake rnay be used to determine a direction and magnitude of torque required to support a mechanical load being applied to the motor. The motor drive then provides a current to generate the necessary torque required to support the load prior to releasing the holding brake.
Abstract translation: 公开了一种用于在释放抱闸时在平衡系统中减少回滚的方法和系统。 保持制动器中存在驱动轴的有限量的运动。 电机驱动器通过保持制动器设置电流给电机，以便在驱动轴上施加扭矩。 控制电流以在两个方向上产生扭矩。 制动器中有限的运动量可用于确定支撑施加到马达的机械负载所需的转矩的方向和大小。 然后，电机驱动器提供电流以产生在释放抱闸之前支撑负载所需的必要扭矩。
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公开(公告)号：WO2015006283A3
公开(公告)日：2015-01-15
申请号：PCT/US2014/045682
申请日：2014-07-08
Applicant: MAGNETEK, INC.
Inventor： BACKMAN, John , ANDERSON, Garry
Abstract: A system for determining the angular position of a synchronous motor includes an encoder with a friction wheel engaging a rotating surface of the motor. The friction wheel is spun by the rotation of the motor, and the encoder generates a signal corresponding to the angular position of the friction wheel An independent sensor is provided to generate a pulse once per revolution of the motor. The independent sensor detects the presence of a target on the rotating surface of the motor and generates the pulse when the target is proximate to the sensor. A controller receives the signal corresponding to the angular position of the friction wheel as well as the pulse generated by the independent sensor to determine the angular position of the motor. The controller compensates the angular position of the motor each time the pulse is generated, correcting accumulated position error.
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公开(公告)号：EP3408204A1
公开(公告)日：2018-12-05
申请号：EP17744983.2
申请日：2017-01-27
Applicant: Magnetek Inc.
Inventor： ANDERSON, Garry , KOBISKE, Mark , BACKMAN, John , BUTTE, Ed
CPC classification number: H02P1/028 , B66B1/304 , B66B2201/00 , H02P23/06
Abstract: A method and system for reducing rollback in a counterbalancing system as a holding brake is released is disclosed. A limited amount of movement of a drive shaft is present in the holding brake. A motor drive provides current to the motor with the holding brake set such that a torque is applied at the drive shaft. The current is controlled to generate torque in both directions. The limited amount of movement in the brake may be used to determine a direction and magnitude of torque required to support a mechanical load being applied to the motor. The motor drive then provides a current to generate the necessary torque required to support the load prior to releasing the holding brake.
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