Robot system
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United States of America Patent
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Oct 31, 2017
Grant Date -
Jun 1, 2017
app pub date -
Nov 1, 2016
filing date -
Nov 30, 2015
priority date (Note) -
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status (Latency Note)
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Abstract
A robot system includes: a robot; a three-phase inverter having a high side switch and a low side switch connected in series; a power line electrically connecting a connection point between the high side switch and the low side switch to a stator winding of a motor; a short circuit path that electrically connects at least two lines of the power line; a brake switch arranged in the short circuit path to change the short circuit path to an open state or a closed state; a break detector that detects a disconnection of the power line; and an operation part that operates the brake switch from the open state to the closed state, when the break detector detects the disconnection.
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