公开(公告)号：US20200244105A1

公开(公告)日：2020-07-30

申请号：US16794520

申请日：2020-02-19

Applicant: Rockwell Automation Technologies, Inc.

Inventor： John Floresta ,  Peter Bruder ,  Xikai Sun ,  Peter M. Smit ,  Oliver C. Haya ,  Mark R. Cooper ,  Nanwei Yao

IPC: H02J50/10 ,  H02P27/06 ,  H02P6/04 ,  H02K41/03 ,  H02K7/18 ,  H02J7/00 ,  H02J50/40 ,  H02P25/064 ,  B60L5/00 ,  H02J50/30 ,  H01F38/14 ,  B60L15/00

Abstract: A system and method for providing power to independent movers traveling along a track in a motion control system without requiring a fixed connection between the mover and a power source external to the mover. In one embodiment, a sliding transformer transfers power between the track and each mover. In another embodiment, an optical transmitter transfers power between the track and an optical receiver mounted on each mover. In yet another embodiment, a generator includes a drive wheel engaging the track as each mover travels along the track. A power converter on the mover receives the power generated on and/or transmitted to the mover to control an actuator or a sensor mounted on the mover or to activate drive coils mounted on the mover to interact with magnets mounted along the track and, thereby, control motion of each mover.

公开(公告)号：US20200232826A1

公开(公告)日：2020-07-23

申请号：US16842167

申请日：2020-04-07

Applicant: Rockwell Automation Technologies, Inc.

Inventor： Peter M. Smit ,  Xikai Sun ,  Jadav Das

IPC: G01D5/347 ,  G01D5/14

Abstract: By configuring an encoder scale as an angled or inclined magnet or pair of oppositely arranged, adjacent magnets, a magnetic field sensor in a travel path of the scale can detect an absolute position of the scale for use in an industrial control system. Due to the angle or incline, when a first side of the scale is proximal to the sensor, the sensor can detect an angle of −180°. As the scale moves to center with respect to the sensor, the sensor can detect an increasing angle to 0°. Then, as a second side of the scale becomes proximal to the sensor, the sensor can detect an increasing angle to +180°. The angle changes linearly with position. In one aspect, the pair of oppositely arranged magnets can be rotated with respect to the travel path to provide the angle. In another aspect, the pair of oppositely arranged magnets can be magnetized diagonally to provide the angle.

公开(公告)号：US20190097466A1

公开(公告)日：2019-03-28

申请号：US15719021

申请日：2017-09-28

Applicant: Rockwell Automation Technologies, Inc.

Inventor： John Floresta ,  Peter Bruder ,  Xikai Sun ,  Peter M. Smit ,  Oliver C. Haya ,  Mark R. Cooper ,  Nanwei Yao

IPC: H02J50/40 ,  H02P27/06 ,  H02P25/064 ,  H02K41/03 ,  H02P6/04 ,  H02K7/18 ,  H02J50/10 ,  H02J50/30 ,  H02J7/00

Abstract: A system and method for providing power to independent movers traveling along a track in a motion control system without requiring a fixed connection between the mover and a power source external to the mover. In one embodiment, a sliding transformer transfers power between the track and each mover. In another embodiment, an optical transmitter transfers power between the track and an optical receiver mounted on each mover. In yet another embodiment, a generator includes a drive wheel engaging the track as each mover travels along the track. A power converter on the mover receives the power generated on and/or transmitted to the mover to control an actuator or a sensor mounted on the mover or to activate drive coils mounted on the mover to interact with magnets mounted along the track and, thereby, control motion of each mover.

公开(公告)号：US10218234B2

公开(公告)日：2019-02-26

申请号：US15367351

申请日：2016-12-02

Applicant: Rockwell Automation Technologies, Inc.

Inventor： Xikai Sun ,  Kun Wei ,  Gennadi Sizov ,  Jingbo Liu

IPC: H02K1/27 ,  H02K1/08 ,  H02K21/16

Abstract: An electric motor in which at least one of the rotor and the stator has an asymmetric design is disclosed. The electric motor is divided into a number of segments, where each segment has an equal number of windings and an equal number of poles. The physical construction of each pole within a segment is identical and the number of turns of each winding within a segment is identical. The asymmetry is formed by varying the physical construction of the either the rotor or the stator within one segment from the corresponding construction of the rotor or stator in the other segments. The asymmetries are designed to improve one or more operating characteristics such as sensorless performance, torque ripple, or cogging torque in the motor.

公开(公告)号：US20180159392A1

公开(公告)日：2018-06-07

申请号：US15367351

申请日：2016-12-02

Applicant: Rockwell Automation Technologies, Inc.

Inventor： Xikai Sun ,  Kun Wei ,  Gennadi Sizov ,  Jingbo Liu

IPC: H02K1/27 ,  H02K1/08

CPC classification number: H02K1/276 ,  H02K1/08 ,  H02K1/2766 ,  H02K21/16

Abstract: An electric motor in which at least one of the rotor and the stator has, an asymmetric design is disclosed. The electric motor is divided into a number of segments, where each segment has an equal number of windings and an equal number of poles. The physical construction of each pole within a segment is identical and the number of turns of each winding within a segment is identical. The asymmetry is formed by varying the physical construction of the either the rotor or the stator within one segment from the corresponding construction of the rotor or stator in the other segments. The asymmetries are designed to improve one or more operating characteristics such as sensorless performance, torque ripple, or cogging torque in the motor.

公开(公告)号：US11581838B2

公开(公告)日：2023-02-14

申请号：US17228944

申请日：2021-04-13

Applicant: Rockwell Automation Technologies, Inc.

Inventor： Xikai Sun ,  Jadav Das ,  Tracy M. Clark ,  Robert H. Schmidt ,  Neil R. Bentley

IPC: B65G23/23 ,  B65G54/02 ,  B60L5/00 ,  B61B3/00 ,  B61J1/12 ,  H02P25/064 ,  H02K11/00 ,  H02K41/03 ,  B65G35/06 ,  H02K11/04

Abstract: A system for wirelessly transmitting power between a track and independent movers in a motion control system includes a pick-up coil provided proximate to the magnets on the movers. The fundamental component of the voltage applied to the drive coils interacts primarily with the magnetic field generated by the permanent magnets on the movers and not with the pick-up coil. Consequently, the pick-up coil does not interfere with desired operation of the movers but rather, interacts primarily with the harmonic components and has current and voltages induced within the pick-up coil as a result of the harmonic components. The energy captured by the pick-up coil reduces the amplitude of eddy currents on the mover. After harvesting the harmonic content, the pick-up coil may be connected to another circuit on the mover and serve as a supply voltage for the other circuit.

公开(公告)号：US11309737B2

公开(公告)日：2022-04-19

申请号：US16794520

申请日：2020-02-19

Applicant: Rockwell Automation Technologies, Inc.

Inventor： John Floresta ,  Peter Bruder ,  Xikai Sun ,  Peter M. Smit ,  Oliver C. Haya ,  Mark R. Cooper ,  Nanwei Yao

IPC: H02P27/06 ,  H02J50/10 ,  B60L15/00 ,  H01F38/14 ,  H02J50/30 ,  B60L5/00 ,  H02P25/064 ,  H02J50/40 ,  H02J7/00 ,  H02K7/18 ,  H02K41/03 ,  H02P6/04 ,  B65G54/02

Abstract: A system and method for providing power to independent movers traveling along a track in a motion control system without requiring a fixed connection between the mover and a power source external to the mover. In one embodiment, a sliding transformer transfers power between the track and each mover. In another embodiment, an optical transmitter transfers power between the track and an optical receiver mounted on each mover. In yet another embodiment, a generator includes a drive wheel engaging the track as each mover travels along the track. A power converter on the mover receives the power generated on and/or transmitted to the mover to control an actuator or a sensor mounted on the mover or to activate drive coils mounted on the mover to interact with magnets mounted along the track and, thereby, control motion of each mover.

公开(公告)号：US11303242B2

公开(公告)日：2022-04-12

申请号：US16594751

申请日：2019-10-07

Applicant: Rockwell Automation Technologies, Inc.

Inventor： Xikai Sun ,  Peter M. Smit ,  Oliver C. Haya ,  Mark R. Cooper ,  Nanwei Yao

IPC: H02P25/064 ,  H02P27/06 ,  H02J50/10 ,  H02P6/00 ,  H02P6/04 ,  H02K41/03 ,  H01F38/14 ,  B60L15/00 ,  B65G54/02

Abstract: A system and method for wirelessly providing power to independent movers traveling along a track includes a sliding transformer to transfer power between the track and each mover. The sliding transformer includes a primary winding extending along the track and a secondary winding mounted to each mover. Each of the primary and secondary windings may be formed of a single coil or multiple coils. The primary and secondary windings are generally aligned with each other and extend along the track and along the mover in the direction of travel with an air gap present between the windings. A power converter on the mover may regulate the power supplied to the mover to control an actuator or a sensor mounted on the mover or to activate drive coils mounted on the mover to interact with magnets mounted along the track and, thereby, control motion of each mover.

公开(公告)号：US20210384765A1

公开(公告)日：2021-12-09

申请号：US17406735

申请日：2021-08-19

Applicant: Rockwell Automation Technologies, Inc.

Inventor： Jadav Das ,  Xikai Sun ,  Shankha S. Seal ,  Dayin Xu ,  Tracy M. Clark ,  John Floresta

IPC: H02J50/10 ,  B60L15/00 ,  H01F38/14 ,  H02J50/30 ,  B60L5/00 ,  H02P25/064 ,  H02J50/40 ,  H02J7/00 ,  H02K7/18 ,  H02K41/03 ,  H02P6/04 ,  H02P27/06

Abstract: An independent cart system includes an inductive link for contactless power transfer between a track and each mover as the mover travels along the track. A system for contactless data transmission between movers and a controller in the independent cart system includes a transmitter and/or receiver mounted on each mover and a complementary receiver and/or transmitter mounted on a track. The transmitter receives data to be transmitted across the inductive link and modulates a voltage present on either the primary or secondary winding to which it is coupled. The modulated voltage present on one winding induces a corresponding modulation on the voltage present on the other winding. A receiver operatively connected to the other side of the inductive link detects the modulated voltage and decodes the data from the modulated voltage received across the inductive link.

公开(公告)号：US10985685B1

公开(公告)日：2021-04-20

申请号：US16587177

申请日：2019-09-30

Applicant: Rockwell Automation Technologies, Inc.

Inventor： Xikai Sun ,  Jadav Das ,  Tracy M. Clark ,  Robert H. Schmidt ,  Neil R. Bentley

IPC: B65G23/23 ,  B65G54/02 ,  B60L5/00 ,  B60B3/00 ,  B61J1/12 ,  H02P25/064 ,  H02K11/00 ,  H02K41/03 ,  B65G35/06 ,  H02K11/04

Abstract: A system for wirelessly transmitting power between a track and independent movers in a motion control system includes a pick-up coil provided proximate to the magnets on the movers. The fundamental component of the voltage applied to the drive coils interacts primarily with the magnetic field generated by the permanent magnets on the movers and not with the pick-up coil. Consequently, the pick-up coil does not interfere with desired operation of the movers but rather, interacts primarily with the harmonic components and has current and voltages induced within the pick-up coil as a result of the harmonic components. The energy captured by the pick-up coil reduces the amplitude of eddy currents on the mover. After harvesting the harmonic content, the pick-up coil may be connected to another circuit on the mover and serve as a supply voltage for the other circuit.