Systems and methods for decelerating a motor in a computer numerical controlled machine tool
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United States of America Patent
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Oct 30, 2012
Grant Date -
Oct 6, 2011
app pub date -
Mar 30, 2010
filing date -
Mar 30, 2010
priority date (Note) -
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Abstract
A method for decelerating a motor in a computer numerical controlled machine tool is provided. The method includes calculating a present rate of deceleration DP, for a motor of a motor drive system, based on a present speed SP of the motor, a reference speed SR of the motor, and a reference rate of deceleration DR of the motor. The method also includes decelerating the motor from SP according to DP. The motor drive system comprises a maximum power rating that defines a maximum power, generated by the motor while decelerating, that can be dissipated without overloading the motor drive system. DR is a rate of deceleration such that power, generated by the motor while decelerating from SR according to DR, is equal to the maximum power rating. Power, generated while decelerating the motor from SP according to DP, is equal to or less than the maximum power rating.
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