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TAU - APMonitor Option

Main.OptionTau History

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March 24, 2018, at 04:18 AM by 45.56.3.173 -
Changed lines 11-12 from:

The time constant is a tuning parameter for the speed of response of a reference trajectory. When the set point is stepped to a new value, the time constant (TAU) adjusts the speed of response with

to:

The time constant is a tuning parameter for the speed of response of a reference trajectory. When the set point is stepped to a new value, the time constant (TAU) adjusts the speed of response with

Changed line 15 from:

where SPold is the prior set point, SPnew is the new set point, t is the time, TAU is the time constant, and SP_tr is the resultant trajectory.

to:

where SPold is the prior set point, SPnew is the new set point, t is the time, TAU is the time constant, and SPtr is the resultant trajectory.

March 24, 2018, at 04:17 AM by 45.56.3.173 -
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$$SP_{tr} = (1-\exp{\left(-\frac{t}{TAU}\right)}) (SP_{new} - SP_{old}) + SP_{old}$$

to:

$$SP_{tr} = \left(1-\exp{\left(-\frac{t}{TAU}\right)}\right) (SP_{new} - SP_{old}) + SP_{old}$$

March 24, 2018, at 04:17 AM by 45.56.3.173 -
Changed lines 11-15 from:

The time constant is a tuning parameter for the speed of response of a reference trajectory. When the set point is stepped to a new value, the time constant (TAU) adjusts the speed of response with SP_tr = (1-exp(-t/TAU)) (SPnew - SPold) + SPold where SPold is the prior set point, SPnew is the new set point, t is the time, TAU is the time constant, and SP_tr is the resultant trajectory.

to:

The time constant is a tuning parameter for the speed of response of a reference trajectory. When the set point is stepped to a new value, the time constant (TAU) adjusts the speed of response with

$$SP_{tr} = (1-\exp{\left(-\frac{t}{TAU}\right)}) (SP_{new} - SP_{old}) + SP_{old}$$

where SPold is the prior set point, SPnew is the new set point, t is the time, TAU is the time constant, and SP_tr is the resultant trajectory.

March 24, 2018, at 04:14 AM by 45.56.3.173 -
Changed line 8 from:
 Default Value: 60.0
to:
 Default Value: 1.0
June 08, 2017, at 10:44 PM by 10.5.113.159 -
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to:
Added lines 12-13:

See also SP, SPHI, SPLO

June 01, 2017, at 06:36 AM by 45.56.3.173 -
Added lines 1-11:

(:title TAU - APMonitor Option:) (:keywords TAU, Optimization, Estimation, Option, Configure, Default, Description:) (:description Time constant for controlled variable response:)

 Type: Floating Point, Input
 Default Value: 60.0
 Description: Time constant for controlled variable response

The time constant is a tuning parameter for the speed of response of a reference trajectory. When the set point is stepped to a new value, the time constant (TAU) adjusts the speed of response with SP_tr = (1-exp(-t/TAU)) (SPnew - SPold) + SPold where SPold is the prior set point, SPnew is the new set point, t is the time, TAU is the time constant, and SP_tr is the resultant trajectory.