AdCtrlControlPara (FB)

FUNCTION_BLOCK AdCtrlControlPara

Calculates possible control parameters for PidT1 control algorithm, based on the plants gain AdaptKs, delay time AdaptTu and rising time AdaptTg.

These parameters can be measured by means of AdCtrlAdapt Function Block and are to be used with AdCtrlCascade Function Block or AdCtrlPidt1 Function Block.

The block calculates the parametrs for PidT1, based on the adapt results AdaptKs, AdaptTu and AdaptTg.

It mainly optimizes the below three scenarios:

• Aperiodic behavior disturbance reaction,

• Overshoot disturbance reaction by allowing 20% overshoot

• Compensation of process delay time (higher derivative gain)

InOut:

Scope	Name	Type	Initial	Comment
Input	SelAperiodic	BOOL	FALSE	1: Optimize aperiodic behavior disturbance response
	SelOvershoot	BOOL	FALSE	2: Optimize 20% overshoot disturbance response
	SelCompensate	BOOL	FALSE	3: Optimize dead-time compensation for temperature control
	AdaptKs	REAL	0	4: Value from AdCtrlAdapt Function Block
	AdaptTu	REAL	0	5: Value from AdCtrlAdapt Function Block
	AdaptTg	REAL	0	6: Value from AdCtrlAdapt Function Block
Output	CtrlKp	REAL	0	1: Control parameter proportional gain
	CtrlTiCycles	REAL	0	2: Control parameter integration time
	CtrlTdCycles	REAL	0	3: Control parameter derivative time
	CtrlT1Cycles	REAL	0	4: Control parameter first order delay