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Intech Jul/Aug2010
4 páginas
Publicado por
mialiravina
By Greg McMillan
An enhanced PID controller simplifies tuning and improves
loop stability and reliability for loops dominated by
discontinuous measurement updates
erating range.
Large periodic and exception reporting settings to...
[Mais]
By Greg McMillan
An enhanced PID controller simplifies tuning and improves
loop stability and reliability for loops dominated by
discontinuous measurement updates
erating range.
Large periodic and exception reporting settings to increase battery life can cause
loop instability and limit cycles when using a traditional PID (proportional–integral–derivative)
for control.
Analyzers offer composition measurements key to a higher level of process control but often have a less-than-ideal reliability record, sample system, cycle time, and resolution
or sensitivity limit.
A modification of the integral
and derivative mode calculations can inherently
prevent PID response problems, simplify tunW
ireless measurements offer significant life-cycle cost savings by eliminating the installation, troubleshooting, and modification of wiring systems for new
and relocated measurements.
Some of the less
recognized benefits are the eradication of EMI
spikes from pump and agitator variable speed
drives, the o
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Tags
control,
cycle,
derivative,
integral,
life,
limit,
loop,
loops,
measurements,
mode,
problems,
process,
response,
result,
significant,
speed,
variable
