Model Predictive Control Toolbox™

Set signal types in MPC plant model

Syntax

• P=setmpcsignals(P,SignalType1,Channels1,SignalType2,Channels2,...)
  

Description

The purpose of setmpcsignals is to set I/O channels of the MPC plant model P. P must be an LTI object. Valid signal types, their abbreviations, and the channel type they refer to are listed below

Signal Type	Abbreviation	Channel
Manipulated	MV	Input
MeasuredDisturbances	MD	Input
UnmeasuredDisturbances	UD	Input
MeasuredOutputs	MO	Output
UnmeasuredOutputs	UO	Output

.

Unambiguous abbreviations of signal types are also accepted.

P=setmpcsignals(P) sets channel assignments to default, namely all inputs are manipulated variables (MVs), all outputs are measured outputs (MOs). More generally, input signals that are not explicitly assigned are assumed to be MVs, while unassigned output signals are considered as MOs.

Examples

We want to define an MPC object based on the LTI discrete-time plant model sys with four inputs and three outputs. The first and second input are measured disturbances, the third input is an unmeasured disturbance, the fourth input is a manipulated variable (default), the second output is an unmeasured, all other outputs are measured.

• sys=setmpcsignals(sys,'MD',[1 2],'UD',[3],'UO',[2]);
  mpc1=mpc(sys);
  

Note    When using setmpcsignals to modify an existing MPC object, be sure that the fields Weights, MV, OV, DV, Model.Noise, and Model.Disturbance are consistent with the new I/O signal types.

See Also

mpc, set

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