Motor device
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United States of America Patent
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Oct 24, 2017
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N/A
app pub date -
Feb 9, 2015
filing date -
Feb 10, 2014
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Abstract
A motor device configured to convey a fluid by driving a fan with a motor includes a position/speed acquirer configured to acquire a current rotation angle and a current rotation speed of the motor, a multiplier configured to calculate a flow-rate-constant target driving current by multiplying the rotation speed and a flow rate coefficient, and a current controller configured or programmed to control a motor driving current by setting, as a control target, the flow-rate-constant target driving current and to control a flow rate of the fluid to be maintained at a constant value which depends on the flow rate coefficient.
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