Adaptive trigger mapping
AssigneeMilwaukee Electric Tool Corporation
InventorsParker McColl, Troy C. Thorson, Jonathan E. Abbott
Life of this patent
Estimating the term…
Abstract
A power tool including a housing, a trigger, a motor coupled to an output member, and a motor drive circuit coupled to the motor. The power tool further includes a motor controller coupled to the motor drive circuit. The motor control circuit is configured to detect a position change of the trigger, determine one or more parameters associated with the position change, and generate an output based on the one or more determined parameters and a variable trigger mapping function. The output is then output to the motor drive circuit.
Claims18
A power tool comprising:
- a housing;
- a trigger;
- a motor coupled to an output member;
- a motor drive circuit coupled to the motor;
- and
- a motor controller coupled to the motor drive circuit, the motor controller configured to:
- detect a position change of the trigger,
- determine a depression distance and a release distance corresponding to the position change,
- generate an output using at least a first hysteresis function in response to the determined depression distance and a second hysteresis function in response to the determined release distance, and
- transmit the output to the motor drive circuit.
A power tool comprising:
- a housing;
- a trigger;
- a motor coupled to an output member;
- a motor drive circuit coupled to the motor;
- and
- a motor controller coupled to the motor drive circuit, the motor controller configured to:
- detect a position change of the trigger,
- determine one or more parameters associated with the detected position change based on a change in a detected magnetic field, wherein the one or more parameters comprises a depression or release distance of the trigger,
- inputting the one or more parameters to a trigger map to generate an output,
- transmit the output to the motor drive circuit,
- apply one or more trigger mapping adjustment functions to modify the trigger map, and
- update the trigger map based on the applied trigger mapping function.
A power tool comprising:
- a housing;
- a trigger;
- a motor coupled to an output member;
- a motor drive circuit coupled to the motor;
- and
- a motor controller coupled to the motor drive circuit, the motor controller configured to:
- detect a position change of the trigger,
- determine one or more parameters associated with the detected position change, wherein the one or more parameters comprises a transition state of the trigger, the transition state comprising at least of one a depressing to releasing state or a releasing to depressing state,
- generate an output using a first variable trigger mapping function in response to the transition state being a depression to releasing state and a second variable trigger mapping function in response to the transition being a releasing to depressing state, and
- transmit the output to the motor drive circuit.
Dependencies are inferred from the claim text.