Method for operating a valve having a stepper motor as actuator
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United States of America Patent
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Jun 10, 2014
Grant Date -
Aug 25, 2011
app pub date -
Feb 24, 2011
filing date -
Feb 25, 2010
priority date (Note) -
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status (Latency Note)
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Abstract
An illustrative method for operating a valve, where the valve includes a valve seat, a valve plunger and a stepper motor for moving the valve plunger from a first position into a second position in which the valve plunger is pressed against a valve seat and for compressing a flexible element assigned to the valve plunger in said second position. The stepper motor may be driven a defined number of steps (NTOTAL) in order to move the valve plunger into the second position and to compress the flexible element. The method may include: driving the stepper motor a first number of steps (N1) at a first current level (I1); driving the stepper motor a second number of steps (N2) at a second current level (I2); and driving the stepper motor a third number of steps (N3) at a third current (I3) level.
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