TR_INIT - APMonitor Option
Main.OptionTrInit History
Show minor edits - Show changes to output
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See also [[https://apmonitor.com/do/index.php/Main/ControllerTuning|Controller Tuning]]
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See also [[https://apmonitor.com/do/index.php/Main/ControllerTuning|Controller Tuning]], [[Main/OptionTrOpen|TR_OPEN]]
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%width=50px%Attach:cv.png [[Main/DbsVariable|Local Options]] | %width=30px%Attach:apm.png [[Main/DbsGlobal|Global Options]]
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Description: Traj initialization
to:
Description: Trajectory initialization
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TR_INIT is an option to specify how the initial conditions of the reference trajectory should change with each cycle. An option of 0 specifies that the initial conditions should start at SPHI and SPLO, creating an unchanging target over the horizon. An option of 1 makes the initial conditions equal to the current process variable value only on coldstart (APM.COLDSTART>=1) or with CTRLMODE <=2 when the controller is out of service. Otherwise, the reference trajectory is updated from the first step of the prior solution. When TR_INIT=2, the reference trajectory realigns to the controlled variable (CV) initial condition with each cycle. Each CV can have a different TR_INIT.
to:
TR_INIT is an option to specify how the initial conditions of the reference trajectory should change with each cycle. An option of 0 specifies that the initial conditions should start at [[Main/OptionSphi|SPHI]] and [[Main/OptionSplo|SPLO]], creating an unchanging target over the horizon. An option of 1 makes the initial conditions equal to the current process variable value only on coldstart ([[Main/OptionApmColdstart|APM.COLDSTART]]>=1) or with [[Main/OptionApmCtrlmode|APM.CTRLMODE]] <=2 when the controller is out of service. Otherwise, the reference trajectory is updated from the first step of the prior solution. When TR_INIT=2, the reference trajectory realigns to the controlled variable (CV) initial condition with each cycle. Each CV can have a different TR_INIT.
%width=500px%Attach:trajectory.png
%width=500px%Attach:trajectory.png
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See also [[https://apmonitor.com/do/index.php/Main/ControllerTuning|Controller Tuning]]
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Description: Traj initialization (0=dead-band, 1=re-center with coldstart/out-of-service, 2=re-center always)
to:
Description: Traj initialization
0=dead-band
1=re-center with coldstart/out-of-service
2=re-center always
0=dead-band
1=re-center with coldstart/out-of-service
2=re-center always
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(:title TR_INIT - APMonitor Option:)
(:keywords TR_INIT, Optimization, Estimation, Option, Configure, Default, Description:)
(:description Traj initialization (0=dead-band, 1=re-center with coldstart/out-of-service, 2=re-center always):)
%width=50px%Attach:cv.png
Type: Integer, Input
Default Value: 2
Description: Traj initialization (0=dead-band, 1=re-center with coldstart/out-of-service, 2=re-center always)
TR_INIT is an option to specify how the initial conditions of the reference trajectory should change with each cycle. An option of 0 specifies that the initial conditions should start at SPHI and SPLO, creating an unchanging target over the horizon. An option of 1 makes the initial conditions equal to the current process variable value only on coldstart (APM.COLDSTART>=1) or with CTRLMODE <=2 when the controller is out of service. Otherwise, the reference trajectory is updated from the first step of the prior solution. When TR_INIT=2, the reference trajectory realigns to the controlled variable (CV) initial condition with each cycle. Each CV can have a different TR_INIT.
(:keywords TR_INIT, Optimization, Estimation, Option, Configure, Default, Description:)
(:description Traj initialization (0=dead-band, 1=re-center with coldstart/out-of-service, 2=re-center always):)
%width=50px%Attach:cv.png
Type: Integer, Input
Default Value: 2
Description: Traj initialization (0=dead-band, 1=re-center with coldstart/out-of-service, 2=re-center always)
TR_INIT is an option to specify how the initial conditions of the reference trajectory should change with each cycle. An option of 0 specifies that the initial conditions should start at SPHI and SPLO, creating an unchanging target over the horizon. An option of 1 makes the initial conditions equal to the current process variable value only on coldstart (APM.COLDSTART>=1) or with CTRLMODE <=2 when the controller is out of service. Otherwise, the reference trajectory is updated from the first step of the prior solution. When TR_INIT=2, the reference trajectory realigns to the controlled variable (CV) initial condition with each cycle. Each CV can have a different TR_INIT.