Invention Grant
- Patent Title: Method and apparatus for controlling motion in a counterbalancing system
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Application No.: US15418118Application Date: 2017-01-27
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Publication No.: US09973114B2Publication Date: 2018-05-15
- Inventor: Garry Anderson , Mark Kobiske , John Backman , Edward G. Butte
- Applicant: Magnetek, Inc.
- Applicant Address: US WI Menomonee Falls
- Assignee: Magnetek, Inc.
- Current Assignee: Magnetek, Inc.
- Current Assignee Address: US WI Menomonee Falls
- Agency: Boyle Fredrickson, SC
- Main IPC: H02K7/10
- IPC: H02K7/10 ; H02K17/32 ; H02K23/68 ; H02P1/02 ; B66B1/30

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.
Public/Granted literature
- US20170222577A1 Method and Apparatus for Controlling Motion in a Counterbalancing System Public/Granted day:2017-08-03
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