Main

## Main.OptionApmCtrlHor History

June 08, 2017, at 11:24 PM by 10.5.113.159 -
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June 01, 2017, at 06:54 AM by 45.56.3.173 -
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 Description: Control horizon: Horizon length where MVs can be adjusted by the solver

to:
 Description: Control horizon is the horizon length where MVs
can be adjusted by the solver

June 01, 2017, at 06:54 AM by 45.56.3.173 -
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(:title APM.CTRL_HOR - APMonitor Option:) (:keywords APM.CTRL_HOR, Optimization, Estimation, Option, Configure, Default, Description:) (:description Control horizon: Horizon length where MVs can be adjusted by the solver:)

 Type: Integer, Input or Output (with CSV read)
Default Value: 1
Description: Control horizon: Horizon length where MVs can be adjusted by the solver


CTRL_HOR is the control horizon in the beginning portion of the time horizon where MV changes are allowed. There is also a PRED_HOR (prediction horizon) that is greater than or equal to CTRL_HOR. As opposed to CTRL_HOR, no manipulated variable movement is allowed in the prediction horizon. The individual size of time steps of the control horizon are set with CTRL_TIME. The individual size of time steps of the prediction horizon are set with PRED_TIME. The PRED_TIME is generally larger than the CTRL_TIME to give a section of the overall horizon that predicts steady state arrival to the set point. When CSV_READ is on and the horizon time points are specified from the data file, the CTRL_HOR and PRED_HOR are set equal to the number of time steps present in the data file.