mktito

Purpose

Partition LTI system into two-input/two-output system

Syntax

• SYS=mktito(SYS,NMEAS,NCONT)
  

Description

SYS=mktito(SYS,NMEAS,NCONT) adds TITO (two-input/two-output) partitioning to LTI system SYS, assigning OutputGroup and InputGroup properties such that

Any preexisting OutputGroup or InputGroup properties of SYS are overwritten. TITO partitioning simplifies syntax for control synthesis functions like hinfsyn and h2syn.

Algorithm

• [r,c]=size(SYS);
  set(SYS,'InputGroup', struct('U1',1:c-NCONT,'U2',c-NCONT+1:c));
  set(SYS,'OutputGroup',struct('Y1',1:r-NMEAS,'Y2',r-NMEAS+1:r));
  

Examples

You can type

• P=rss(2,4,5); P=mktito(P,2,2);
  disp(P.OutputGroup); disp(P.InputGroup);
  

to create a 4-by-5 LTI system P with OutputGroup and InputGroup properties

•     U1: [1 2 3]
      U2: [4 5]
      Y1: [1 2]
      Y2: [3 4]
  

See Also

augw        Augments plant weights for control design

hinfsyn     H synthesis controller

h2syn       H₂ synthesis controller

ltiprops    Help on LTI model properties

sdhinfsyn   H discrete-time controller

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