公开(公告)号：US20200186063A1

公开(公告)日：2020-06-11

申请号：US16789020

申请日：2020-02-12

Applicant: Rockwell Automation Technologies, Inc.

Inventor： David D. Van Dorpe ,  Mark R. Cooper ,  Shankemarayan Ramanarayanan ,  Patrick E. Ozimek ,  Jadav Das

IPC: H02P7/025 ,  H02K41/035 ,  B65G35/06 ,  H02P29/028 ,  H02K11/30 ,  H02K11/21

Abstract: A mover is configured to be electromagnetically propelled along a track in a linear motor track system with a force that is calculated to include compensation for gravity. A multi-axis accelerometer arranged in each segment of the track can detect an orientation or angle of the track segment for determining gravity with respect to the particular section. As a result, if the track is at an incline, such as a ramp, a desired force for moving a mover along the track can be compensated to include gravity due to the incline for achieving a desired motion result. In addition, the detected orientation of the track can be compared to an expected orientation stored by a control program to avoid a loss of performance due to physical changes in the track not matching an expected/programmed configuration of the track.

公开(公告)号：US10381958B2

公开(公告)日：2019-08-13

申请号：US15719153

申请日：2017-09-28

Applicant: Rockwell Automation Technologies, Inc.

Inventor： Jadav Das

IPC: H02P25/06 ,  H02P6/00 ,  H02P25/064 ,  H02K41/02

Abstract: A motor controller is provided that executes a commutation routine in one of a plurality of operating modes to regulate current provided to drive coils in a linear motion system. The motor controller generated currents for each of the drive coils in a first operating mode to minimize the copper losses in the drive coils, in a second operating mode to maximize the force applied to the mover, in a third operating mode to provide balanced currents between the drive coils, and in a fourth operating mode to provide currents according to a selected operating point that combines characteristics of the first three operating points. The motor controller may also monitor each of the drive coils for saturation and redistribute at least a portion of the current required to control operation of the mover to the other drive coils when one of the drive coils is saturated.

公开(公告)号：US20190097552A1

公开(公告)日：2019-03-28

申请号：US15719153

申请日：2017-09-28

Applicant: Rockwell Automation Technologies, Inc.

Inventor： Jadav Das

IPC: H02P6/00 ,  H02P25/064

CPC classification number: H02P6/006 ,  H02K41/02 ,  H02P25/06 ,  H02P25/064 ,  H02P2207/05

Abstract: A motor controller is provided that executes a commutation routine in one of a plurality of operating modes to regulate current provided to drive coils in a linear motion system. The motor controller generated currents for each of the drive coils in a first operating mode to minimize the copper losses in the drive coils, in a second operating mode to maximize the force applied to the mover, in a third operating mode to provide balanced currents between the drive coils, and in a fourth operating mode to provide currents according to a selected operating point that combines characteristics of the first three operating points. The motor controller may also monitor each of the drive coils for saturation and redistribute at least a portion of the current required to control operation of the mover to the other drive coils when one of the drive coils is saturated/