modelLeadLAG

Lead lag process with tracking mode (and limiter)

Extends from IndustrialControlSystems.Controllers.Interfaces.Block (Partial interface for a continuous time control block).

Information

Description

Lead lag continuous time control block.

   Y(s)        (1 + s*Tz)
   ----  = mu ------------
   U(s)        (1 + s*Tp)

AntiWindUp mode

If the boolean flag AntiWindup is tue the output of the block ( y ) saturates at the levels specified by Ymin and Ymax.

Tracking mode

If the boolean flag useTS, the inputs TS and TR are enabled.
When enabled, is the TS signal is true the output y is forced to follow the track reference signal TR.

While the tracking mode is enabled (TS = true), the state variable follows the Track Reference signal (TR).
In such a way bumpless transitions are guaranteed.

Parameters

Type	Name	Default	Description
Boolean	useTS (from Block)	false	=true, if TS input is enabled
Real	mu	1	Gain of the system
Real	Tp	1	Pole time constant
Real	Tz	2	Zero time constant
Real	y_start	0	output initial value
Tracking
Real	eps (from Block)	0.001	Small time constant used in tracking mode
Saturation
Boolean	AntiWindup (from Block)	false	Flag that enables the antiwindup feature
Real	Ymin (from Block)	0	Minimum value of Y
Real	Ymax (from Block)	1	Maximum value of Y

Connectors

Type	Name	Description
Modelica.Blocks.Interfaces.RealInput	TR (from Block)	Track Reference signal
Modelica.Blocks.Interfaces.BooleanInput	TS (from Block)	Track Switch signal
Modelica.Blocks.Interfaces.RealInput	u (from Block)	input
Modelica.Blocks.Interfaces.RealOutput	y (from Block)	output

Components

Type	Name	Default	Description
Real	tr (from Block)		track reference value
Boolean	ts (from Block)		track reference signal

Revisions

Industrial Control Systems (v 1.0.0) : April-May 2012