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Example of Proportional Plus Rate Control
Proportional Plus Rate Control Summary

Instrumentation and Control 2 of 2
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Process Controls PROPORTIONAL PLUS RATE CONTROL SYSTEMS Figure 29 Effect   of   Disturbance   on   Proportional   Plus   Rate   Reverse   Acting Controller Applications Proportional plus rate control is normally used with large capacity or slow-responding processes such  as  temperature  control.    The  leading  action  of  the  controller  output  compensates  for  the lagging characteristics of large capacity, slow processes. Rate action is not usually employed with fast responding processes such as flow control or noisy processes because derivative action responds to any rate of change in the error signal, including the noise. Proportional plus rate controllers are useful with processes which are frequently started up and shut down because it is not susceptible to reset windup. Rev. 0 Page 41 IC-07







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