A power tool including a motor, an input unit such as a variable-speed trigger switch, and a controller is provided. The controller controls the speed of the motor as a function of the input level indicated by the electrical signal from the input unit. The function is a first expression within a first predetermined range of the input level and a second expression within a second predetermined range of the input level, where the second expression corresponds to a polynomial of a second degree or higher and is different from the first expression.
申请公布号
EP2375473(A3)
申请公布日期
2014.11.26
申请号
EP20110161384
申请日期
2011.04.06
申请人
BLACK & DECKER INC.
发明人
CUNANAN, REGINA GRACIA C.;DELROSE, FRANCK, J.;GORTI, BHANUPRASAD V;HOWARD, GEOFFREY S.;IQBAL, AZIZ;VELDERMAN, MATTHEW, J.;WHITE, DANIEL, J.