Power tool, method, apparatus, computer program product and computer readable medium

The invention relates to a power tool (1), in particular a hand-propelled power tool, for example a polishing device (1A), a grinding device and/or a sawing device (1B), comprising a tool (2), an electric motor (3) for driving the tool (2), and a control unit (4) for actuating the electric motor (3)...

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Hauptverfasser: THURINGER, MARKUS, SCHNELLER, PETER, CARTA MICHELE, FU RSTER, ANDREAS, HOFFMANN THOMAS
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Sprache:chi ; eng
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creator THURINGER, MARKUS
SCHNELLER, PETER
CARTA MICHELE
FU RSTER, ANDREAS
HOFFMANN THOMAS
description The invention relates to a power tool (1), in particular a hand-propelled power tool, for example a polishing device (1A), a grinding device and/or a sawing device (1B), comprising a tool (2), an electric motor (3) for driving the tool (2), and a control unit (4) for actuating the electric motor (3), wherein the power tool (1) is designed to be connected to a network voltage (V1) and comprises a rectifier device (12) having an intermediate circuit (15) for providing an intermediate circuit voltage (V2) on the basis of the network voltage (V1), the intermediate circuit voltage (V2) having a plurality of successive voltage half-waves (16), and wherein the control unit (4) is designed to provide a torque change process (28) for actuating the electric motor (3), wherein the torque change process (28) comprises a respective torque half-wave (36) for each voltage half-wave (16), and wherein the control unit (4) is designed to determine a reverse voltage (34) induced in the electric motor (3) and to reduce a current
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language chi ; eng
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subjects CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORSOR DYNAMO-ELECTRIC CONVERTERS
CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
ELECTRICITY
GENERATION
title Power tool, method, apparatus, computer program product and computer readable medium
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