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E5AF डेटा पत्रक PDF( Datasheet डाउनलोड )


डेटा पत्रक - Fuzzy Temperature Controller - OMRON

भाग संख्या E5AF
समारोह Fuzzy Temperature Controller
मैन्युफैक्चरर्स OMRON 
लोगो OMRON लोगो 
पूर्व दर्शन
1 Page
		
<?=E5AF?> डेटा पत्रक पीडीएफ

E5AF pdf
E5AF
E5AF
Advanced PID Control Improved with Fuzzy Control
Omron's E5AF temperature controllers combine advanced PID
control with fuzzy logic control to improve responsiveness to
external process disturbances, events that cause a clear offset
between the process and set temperatures.
Omron's feed-forward (FF) advanced PID control and fuzzy
logic control operate in parallel. The PID control operates
during normal conditions, while the fuzzy logic control operates
only when there has been an external disturbance to the
process. The start-up and stable state operation is identical to
Omron's conventional PID controllers. The output of the E5AF
is the sum total of the output of the PID and fuzzy control
functions. Both PID and fuzzy scale parameters can be set
automatically by auto-tuning, or may be manually set.
There are three fuzzy parameters users can set, and the
illustrations show the impact of each one:
s FUZZY INTENSITY
Fuzzy intensity (FU1) determines the impact of the fuzzy logic
section of the control algorithm, on the final control output
Small
Fuzzy
intensity
Large
percentage. This parameter is the nominal value which can be
set from 0 to 99%. Default setting is 50%. When set to 0%,
fuzzy control will have no influence, and the unit will function as
a PID controller (like Omron's E5AX). As this value is
increased, the corrective actions taken by the controller will
become larger. The FU1 value should be increased in
applications where quicker neutralization of a process
disturbance is required, and/or overshoot on the recover from
the disturbance needs to be further minimized.
s FUZZY SCALE 1
Fuzzy Scale 1 (FUS1) controls the magnitude of error
"membership function". This value corresponds to what the
controller should consider to be a "large" error and can be set
in a range of 0.2° to 999.9° (C or F). Default setting is 40°. For
every sample the controller compares the present error to
FUS1 value in order to make a subjective decision about the
size of the error. Decreasing this value makes the controller
more sensitive to error, and will decrease the response time for
returning the process back to set value.
Large
FUS1
Small
s FUZZY SCALE 2
Large
FUS2
Small
Fuzzy Scale 2 (FUS2) controls the rate-of-change "member-
ship function". This value corresponds to what the controller
should consider a "large" rate of change, and can be set in a
range from 0.20° to 99.9° (C or F) per second. For every
sample the controller compares the present rate-of-change to
the FUS2 value in order to make a subjective decision about
the size of the change. Decreasing this value will make the
controller more sensitive to change. Because small changes in
this value can cause a large increase in oscillations, best
results can usually be achieved by manually setting FU1 and
FUS1 and leaving FUS2 at the auto-tuned value.
s COMBINED EFFECTS OF FUZZY ADJUSTMENTS
Correcting large overshoot
without hunting with an increase
in Fuzzy Intensity
Eliminating small overshoot and
lengthening stabilization time by
decreasing Fuzzy Scale 1
Eliminating large overshoot and
shortening hunting time by
increasing Fuzzy Intensity and
Fuzzy Scale 1
2

विन्यास 9 पेज
डाउनलोड[ E5AF Datasheet.PDF ]


शेयर लिंक


अनुशंसा डेटापत्रक

भाग संख्याविवरणविनिर्माण
E5AFFuzzy Temperature ControllerOMRON
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