Trigger profile for a power tool
First Claim
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1. A method for operating a power tool having an output shaft, comprising:
- receiving an input control variable from an input unit;
receiving at least one tool parameter relating to the power tool;
determining a derivative of the input control variable;
selecting one of a plurality of control profiles based on the control input variable, the derivative of the control input variable, and the tool parameter, each control profile correlating the control input variable of the input unit to a rotational speed at which to drive the output shaft; and
driving the output shaft at a rotational speed in accordance with the selected control profile.
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Abstract
An improved method is provided for operating a power tool. The method includes receiving an input control variable from an input unit; receiving at least one tool parameter relating to the power tool; determining a derivative of the input control variable; selecting one of a plurality of control profiles based on the control input variable, the derivative of the input control variable, and the tool parameter, each control profile correlating the control input variable of the input unit to a rotational speed at which to drive the output shaft; and driving the output shaft at a rotational speed in accordance with the selected control profile.
66 Citations
14 Claims
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1. A method for operating a power tool having an output shaft, comprising:
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receiving an input control variable from an input unit; receiving at least one tool parameter relating to the power tool; determining a derivative of the input control variable; selecting one of a plurality of control profiles based on the control input variable, the derivative of the control input variable, and the tool parameter, each control profile correlating the control input variable of the input unit to a rotational speed at which to drive the output shaft; and driving the output shaft at a rotational speed in accordance with the selected control profile. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A power tool comprising:
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a housing; an output member configured to rotate about a longitudinal axis; a motor contained in the housing and driveably connected to the output member to impart rotary motion thereto; an input unit configured to provide an input control variable in response to a user action; and a controller in the housing configured receive at least one tool parameter relating to the power tool;
determine a derivative of the input control variable;
select one of a plurality of control profiles based on the control input variable, the derivative of the control input variable, and the tool parameter; and
drive the output shaft via the motor at a rotational speed in accordance with the selected control profile, wherein each control profile correlates the control input variable of the input unit to a rotational speed at which to drive the output shaft. - View Dependent Claims (9, 10, 11, 12, 13, 14)
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Specification