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what is reset windup in integral control?
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Answer Posted / nandan
Integral action is in the way a past error control.in a
close loop control proportional control= error *
proportional factor= o/p.But during this action there is
always offset,which will be removed by integral control
whose unit is repeats/minute.so it repeats the proportional
action untill the SP & MV are equal.But sometimes it keep
on repeating the proportional action which can possibly
drives the output to it's limit which is calld the reset
wind up.It frequently occurs when there is startup,because
integral action looks at the past error & from that it
repeats proportional action & during the startup the past
SP & MV has a large difference.To protect this controller
do have a anti reset wind up options.
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