Torque control apparatus for rotary machine
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United States of America Patent
Stats
-
Apr 5, 1988
Grant Date -
N/A
app pub date -
Oct 6, 1986
filing date -
Oct 7, 1985
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A torque control apparatus for a compressor driven by a motor through a main shaft, in which variations of the rotation speed of the main shaft due to torque variations are detected at selected angular positions of rotation of the main shaft. Current values to be supplied to the motor for eliminating the rotation speed variations depending on the angular positions of rotation of the main shaft are computed and stored during at least one revolution of the main shaft, and, in the next revolution of the main shaft, that is, when the main shaft rotates then to a 360.degree. advanced angular position, the motor current is controlled on the basis of the current values supplied for at least one revolution of the main shaft, thereby eliminaitng variations of the rotation-speed of the main shaft.
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Cited Art Landscape
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