Main

TR_INIT - APMonitor Option

Main.OptionTrInit History

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June 08, 2017, at 10:46 PM by 10.5.113.159 -
Changed line 18 from:
See also [[http://apmonitor.com/do/index.php/Main/ControllerTuning|Controller Tuning]]
to:
See also [[http://apmonitor.com/do/index.php/Main/ControllerTuning|Controller Tuning]], [[Main/OptionTrOpen|TR_OPEN]]
June 08, 2017, at 10:45 PM by 10.5.113.159 -
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%width=50px%Attach:cv.png
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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
June 06, 2017, at 10:40 PM by 10.5.113.159 -
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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
June 06, 2017, at 10:09 PM by 10.5.113.159 -
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See also [[http://apmonitor.com/do/index.php/Main/ControllerTuning|Controller Tuning]]
June 01, 2017, at 06:38 AM by 45.56.3.173 -
Changed lines 9-12 from:
 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
June 01, 2017, at 06:37 AM by 45.56.3.173 -
Added lines 1-11:
(: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.