INDUSTRIAL ROBOT AND METHOD TO OPERATE AN INDUSTRIAL ROBOT
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United States of America Patent
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Issued Date -
Jun 10, 2010
app pub date -
Dec 9, 2009
filing date -
Dec 10, 2008
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
In an industrial robot and a method for operating an industrial robot, a robot arm is pivotable with respect to multiple axes. At least one of the axes has an drive associated therewith for controlling movement of the robot arm with respect to that axis. The electrical drive includes a three-phase synchronous motor that is operated with associated electrical currents and electrical voltages. A signal representing at least one of said electrical currents and electrical voltages is supplied to a computerized control unit that determines, from the signal, the position of the axis associated with the electrical drive. The computerized control unit controls operation of the electrical drive dependent on this determined position.
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