Electric power tool and motor control method thereof

An electric power tool (10) is provided with: a motor (14); a hydraulic pressure generator (18) driven by the motor (14) and configured to generate a plurality of impacts in one revolution thereof; an impact angle detector configured to detect an impact angle in one impact of the hydraulic pressure...

Ausführliche Beschreibung

Gespeichert in:

Bibliographische Detailangaben
Hauptverfasser:	AGEHARA, KIGEN, MORIMURA, KOUICHIROU
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	COMBINATION OR MULTI-PURPOSE TOOLS NOT OTHERWISE PROVIDEDFOR DETAILS OR COMPONENTS OF PORTABLE POWER-DRIVEN TOOLS NOTPARTICULARLY RELATED TO THE OPERATIONS PERFORMED AND NOTOTHERWISE PROVIDED FOR HAND TOOLS MANIPULATORS PERFORMING OPERATIONS PORTABLE POWER-DRIVEN TOOLS TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FORFASTENING, CONNECTING, DISENGAGING OR HOLDING TRANSPORTING
Online-Zugang:	Volltext bestellen
Tags:	Tag hinzufügen Keine Tags, Fügen Sie den ersten Tag hinzu!

Beschreibung
Zusammenfassung:	An electric power tool (10) is provided with: a motor (14); a hydraulic pressure generator (18) driven by the motor (14) and configured to generate a plurality of impacts in one revolution thereof; an impact angle detector configured to detect an impact angle in one impact of the hydraulic pressure generator (18); an electric current detector (34) configured to detect an electric current applied to the motor (14); a determination unit configured to determine an impact failure based on the impact angle and the electric current detected by the impact angle detector and the electric current detector (34); and a rotation controller (46) configured to decrease a rotation speed of the motor (14) when the determination unit determines the impact failure.