Patent ID: 11865687
Assignee: MILWAUKEE ELECTRIC TOOL CORPORATION
Field: Machine tools (Mechanical engineering)
Classification: CPC B  H  Y | IPC B  H

Claim 5:
6. A method for reducing vibrations in a percussion tool, the method comprising:
activating, using an electronic controller of the percussion tool, the motor of the percussion tool;
determining, using the electronic controller, that the percussion tool is in a loaded condition;
operating, using the electronic controller, the motor in accordance with a predetermined profile in response to determining that the percussion tool is in the loaded condition;
determining, using the electronic controller, that the percussion tool is in a no-load condition;
operating, using the electronic controller, the motor with reduced speed in response to determining that the percussion tool is in the no-load condition
detecting a motor characteristic with a sensor;
determining a variation in the motor characteristic,
wherein determining that the percussion tool is in the no-load condition includes determining that the variation in the motor characteristic does not satisfy a threshold; and
wherein determining that the percussion tool is in the loaded condition includes determining that the variation in the motor characteristic satisfies the threshold
updating the threshold when switching from the loaded condition to the no-load condition, and when switching from the no-load condition to the loaded condition, and
updating the threshold based on a battery pack voltage detected using the electronic controller.