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Preconfiguration "PID controller"

Small system PID controller variant
 
This preconfiguration can be activated when creating a new object (e.g. by "New object" in the local object menu or by pressing the Insert key after selecting the object) and is included in the group: " / Technology / Regulators".

This preconfiguration can be used with the objects: PmaFolder or PmaRoot.

 
- Preconfiguration creates an object of type PmaFolder containing PmaPanel, PmaData, PmaTimer and PmaTrendGroup objects.
- The preconfiguration is created not including the panel functionality as a Web panel.
 
In the PmaData object named "Data", there are the main variables w - desired value, u - regulator output and y - measured value. These variables are connected by ExtTrend into the PmaTrendGroup object. The Kp, Ti, Td and t values are controller constants. The values limiting the regulator output are umax, umin and bLimit. Other values are only auxilliary, used for storing the data since the last controller action.
 
The PmaTimer object named Timer contains in the onTick event the whole regulation calculation. The comments are used to describe each step of the calculation.
 
The PmaPanel object serves for testing the regulation parameters. In the upper portion of the panel, there are Pmg objects representing the block diagram of the controller circuit. The regulation circuit includes the description texts and current regulation values displayed as PmgNumber objects. The PmgWEdit can be used to modify the constants or controller limits. The PmgTrendViewer object displays the progress of the regulation. The PmgSlider object is connected by a data binding to the data value w and can be used to simulate the desired value (value - y) to be reached by the controlled system.
These configurators can be set before the preconfiguration is created:
The name of created objectName of the object created in the tree of Pma objects. The maximum Pma object name length is 31 characters. This is a system name, so it must contain only alphanumeric and must not contain any diacritics, empty string, spaces and the first character must not be a number.

Default: "PID"

Object sripting languageApplication object scripting language
0 - vbscript
1 - javascript
Enable as Web componentSpecifies whether this object has to be registered as a Web server component

After this preconfiguration is created, the configurator is se to: PmaPanel > Web server > Enable as Web component.

PmaWeb objectPath in the tree of Pma objects to the PmaWeb, PmaWebFolder or PmaWebLang object where the registration is carried out.

Macro expression can be used for input (it is evaluated after starting the application).

After this preconfiguration is created, the configurator is se to: PmaPanel > Web server > PmaWeb object.


History:
Pm8.00.05: Created
PROMOTIC 9.0.3 SCADA system documentation - MICROSYS, spol. s r.o.

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