公开(公告)号：US11833655B2

公开(公告)日：2023-12-05

申请号：US17724202

申请日：2022-04-19

Applicant: MILWAUKEE ELECTRIC TOOL CORPORATION

Inventor： Timothy R. Obermann ,  Douglas R. Fieldbinder ,  Alexander Huber

IPC: H02P1/46 ,  B25F5/00 ,  H02K11/27 ,  H02P21/18 ,  H02K21/16 ,  H02P6/182

CPC classification number: B25F5/00 ,  H02K11/27 ,  H02K21/16 ,  H02P6/182 ,  H02P21/18 ,  H02P2203/03

Abstract: Methods and power tools for sensorless motor control. One embodiment provides a method for automatic control switching for driving a sensorless motor (150) of a power tool (100). The method includes determining, using a motor controller (224), a first load point based on user inputs (232) and determining, using the motor controller (224), a first motor control technique corresponding to the first load point. The method also includes driving the motor (150) based on the first motor control technique. The method further includes determining, using the motor controller (224), a change from the first load point to a second load point and determining, using the motor controller (224), a second motor control technique corresponding to the second load point. The method includes driving the motor (150) based on the second motor control technique.

公开(公告)号：US11648655B2

公开(公告)日：2023-05-16

申请号：US17346800

申请日：2021-06-14

Applicant: MILWAUKEE ELECTRIC TOOL CORPORATION

Inventor： Jonathan E. Abbott ,  Timothy R. Obermann ,  John S. Dey, IV ,  Benjamin R. Suhr ,  Richard A. Ryer ,  Maxwell L. Merget ,  Douglas R. Fieldbinder

IPC: B25D16/00 ,  H02K11/21 ,  B25F5/00 ,  B25F5/02 ,  H02K7/14 ,  H02K7/00 ,  B25B21/02

CPC classification number: B25F5/001 ,  B25B21/02 ,  B25D16/00 ,  B25F5/00 ,  B25F5/02 ,  H02K7/003 ,  H02K7/145 ,  H02K11/21 ,  B25D2250/201 ,  B25D2250/205 ,  B25D2250/221 ,  B25D2250/265

Abstract: Kickback control methods for power tools. One power tool includes a movement sensor configured to measure an angular velocity of the housing of the power tool, and an orientation sensor configured to measure an orientation of the housing. The power tool includes an electronic processor coupled to a switching network and a trigger. To implement the kickback control, the electronic processor is configured to receive measurements of the angular velocity of the housing, receive measurements of the orientation of the housing, determine a binding condition of the power tool based on the measurements of the angular velocity and the measurements of orientation, and control the switching network to cease driving of the brushless DC motor.

公开(公告)号：US11305412B2

公开(公告)日：2022-04-19

申请号：US17054913

申请日：2020-04-15

Applicant: MILWAUKEE ELECTRIC TOOL CORPORATION

Inventor： Timothy R. Obermann ,  Douglas R. Fieldbinder ,  Alex Huber

IPC: H02P1/04 ,  B25F5/00 ,  H02K11/27 ,  H02P21/18 ,  H02K21/16 ,  H02P6/182

Abstract: Methods and power tools for sensorless motor control. One embodiment provides a method for automatic control switching for driving a sensorless motor (150) of a power tool (100). The method includes determining, using a motor controller (224), a first load point based on user inputs (232) and determining, using the motor controller (224), a first motor control technique corresponding to the first load point. The method also includes driving the motor (150) based on the first motor control technique. The method further includes determining, using the motor controller (224), a change from the first load point to a second load point and determining, using the motor controller (224), a second motor control technique corresponding to the second load point. The method includes driving the motor (150) based on the second motor control technique.

公开(公告)号：US20210299843A1

公开(公告)日：2021-09-30

申请号：US17346800

申请日：2021-06-14

Applicant: MILWAUKEE ELECTRIC TOOL CORPORATION

Inventor： Jonathan E. Abbott ,  Timothy R. Obermann ,  John S. Dey, IV ,  Benjamin R. Suhr ,  Richard A. Ryer ,  Maxwell L. Merget ,  Douglas R. Fieldbinder

IPC: B25F5/00 ,  B25D16/00 ,  H02K7/00 ,  H02K11/21 ,  B25F5/02 ,  B25B21/02 ,  H02K7/14

Abstract: Kickback control methods for power tools. One power tool includes a movement sensor configured to measure an angular velocity of the housing of the power tool, and an orientation sensor configured to measure an orientation of the housing. The power tool includes an electronic processor coupled to a switching network and a trigger. To implement the kickback control, the electronic processor is configured to receive measurements of the angular velocity of the housing, receive measurements of the orientation of the housing, determine a binding condition of the power tool based on the measurements of the angular velocity and the measurements of orientation, and control the switching network to cease driving of the brushless DC motor.

公开(公告)号：US20210229258A1

公开(公告)日：2021-07-29

申请号：US17231524

申请日：2021-04-15

Applicant: MILWAUKEE ELECTRIC TOOL CORPORATION

Inventor： Jonathan E. Abbott ,  Timothy R. Obermann ,  John S. Dey, IV ,  Benjamin R. Suhr ,  Richard A. Ryer ,  Maxwell L. Merget ,  Douglas R. Fieldbinder

IPC: B25F5/00 ,  B25F5/02 ,  H02K7/14 ,  H02K7/00 ,  H02K11/21 ,  B25D16/00 ,  B25B21/02

Abstract: Kickback control methods for power tools. One power tool includes a movement sensor configured to measure an angular velocity of the housing of the power tool about the rotational axis. The power tool includes an electronic processor coupled to the switching network and the movement sensor and configured to implement kickback control of the power tool. To implement the kickback control, the electronic processor is configured to control the switching network to drive the brushless DC motor, receive measurements of the angular velocity of the housing of the power tool from the movement sensor, determine that a plurality of the measurements of the angular velocity of the housing of the power tool exceed a rotation speed threshold, and control the switching network to cease driving of the brushless DC motor in response to determining that the plurality of the measurements of the angular velocity exceed the rotation speed threshold.

公开(公告)号：US20210229255A1

公开(公告)日：2021-07-29

申请号：US17054913

申请日：2020-04-15

Applicant: MILWAUKEE ELECTRIC TOOL CORPORATION

Inventor： Timothy R. Obermann ,  Douglas R. Fieldbinder ,  Alex Huber

IPC: B25F5/00 ,  H02K11/27 ,  H02K21/16 ,  H02P6/182 ,  H02P21/18

Abstract: Methods and power tools for sensorless motor control. One embodiment provides a method for automatic control switching for driving a sensorless motor (150) of a power tool (100). The method includes determining, using a motor controller (224), a first load point based on user inputs (232) and determining, using the motor controller (224), a first motor control technique corresponding to the first load point. The method also includes driving the motor (150) based on the first motor control technique. The method further includes determining, using the motor controller (224), a change from the first load point to a second load point and determining, using the motor controller (224), a second motor control technique corresponding to the second load point. The method includes driving the motor (150) based on the second motor control technique.