METHOD FOR CONTROLLING A FLOW RATE OF A PUMP AND METHOD FOR FORMING A COATED FILM
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United States of America Patent
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Issued Date -
Jul 3, 2014
app pub date -
May 25, 2012
filing date -
Jun 1, 2011
priority date (Note) -
Abandoned
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Abstract
A method for controlling a flow rate of a pump (10) transporting a liquid being driven by a drive system having a sliding portion, wherein a flow rate is maintained at a minute first flow rate (R1) at an early stage of operation of the pump (10); and subsequently the flow rate is increased to a steady second flow rate (R). With the method, at the early stage of operation of the pump (10), a state is established beforehand in which the pump (10) is kept stable at the minute first flow rate in order for the stick-slip phenomenon not to occur; and because the flow rate of the pump is increased from the state, transition from static friction to kinetic friction does not occur; and thus a disorderly flow rate of the pump (10) due to the stick-slip phenomenon of a motor (12) is suppressed.
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