|Wet End Process Control and Monitoring|
In order to determine the automatic control algorithm to use, all of the controllers and a set of key variables were monitored. This allowed a better understanding of the process to be gained and the best control algorithm to be determined.
As an initial check on the algorithm, the operators were provided with suggested setpoints for the controllers which could be altered as required. As confidence grew in the system, this stage was removed and the setpoints were sent directly to the controllers at the appropriate stages in the control sequence.
The system has been further modified to monitor the flow rates for reductions, automatically altering the control parameters of the other flows to compensate and producing alarms on fault conditions.
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