PID loop tuning
PID loop tuning
(OP)
Hi, we're trying to control a modulating steam valve to a using a controller that seems to have four tunable terms. Here are the current values:
PbH 16.6
Intr 65
Rset 50
Driv OFF
Question is, what are the four terms? I recognize proportional band, integral, and derivative, but what's rset? I thought reset was the inverse of the integral term? Any thoughts? TIA!
PbH 16.6
Intr 65
Rset 50
Driv OFF
Question is, what are the four terms? I recognize proportional band, integral, and derivative, but what's rset? I thought reset was the inverse of the integral term? Any thoughts? TIA!
Fran McConville





RE: PID loop tuning
<nbucska@pcperipherals DOT com> subj: eng-tips
read FAQ240-1032
RE: PID loop tuning
PB is proportional band, a.k.a. proportional or gain.
I is Integral a.k.a. reset
D is Derivative a.k.a. rate
John
RE: PID loop tuning
Fran McConville
RE: PID loop tuning
I = Integral, for minimizing the offset.
D = Derivative, for high respon and less dead time
rset = set point value
the integral and derivative constant is derived from the ziegler nichols, ciancone, and many method
Regards,
Napz
http://www.enginework.net
RE: PID loop tuning
See http://www.jashaw.com/pid/description.htm
RE: PID loop tuning
Fran McConville