Servo motor monitoring apparatus
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United States of America Patent
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-
Dec 6, 2011
Grant Date -
Dec 17, 2009
app pub date -
Jun 26, 2007
filing date -
Jul 10, 2006
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
Disclosed a servo motor monitoring apparatus including: a magnetic pole position calculating member to extract a magnetic pole position signal of the servo motor from a motor drive line connected to the servo motor; a present position signal inputting member to receive an input of a present position signal from the position detecting member attached to the servo motor; and a monitoring member to compare operations of the servo motor based on two types of signals of the magnetic pole position signal and the present position signal of the servo motor, and to output a stop instruction signal for cutting off a power supply to the servo motor when detecting disagreement.
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