Robust Control Toolbox™

Generate random uncertain umat objects

Syntax

• um = randumat(ny,nu) 
  um = randumat 
  

Description

um = randumat(ny,nu) generates an uncertain matrix of size ny-by-nu. randumat randomly selects from uncertain atoms of type 'ureal', 'ultidyn', and 'ucomplex'.

um = randumat results in a 1-by-1 umat uncertain object, including up to four uncertain objects.

Examples

The following statement creates the umat uncertain object x1 of size 2-by-3. Note that your result can differ because a random seed is used.

• x1 = randumat(2,3) 
  UMAT: 2 Rows, 3 Columns 
    ROQAW: complex, nominal = 9.92+4.84i, radius = 0.568, 1 
  occurrence             
    UEPDY: real, nominal = -5.81, variability = [-1.98681  
  0.133993], 3 occurrences 
    VVNHL: complex, nominal = 5.64-6.13i, radius = 1.99, 2 
  occurrences             
  

The following statement creates the umat uncertain object x2 of size 4-by-2 with the seed 91.

• rand('seed',91); randn('seed',91);
  x2 = randumat(4,2) 
  UMAT: 4 Rows, 2 Columns 
    SSAFF: complex, nominal = -0.366+2.81i, radius = 1.76, 3 
  occurrences    
    VDTIH: complex, nominal = -3.03-3i,  +/- 27.5%, 2 occurrences           
    XOLLJ: real, nominal = 0.0628, range = [-3.73202  4.28174], 1 
  occurrence 
  

See Also
rand        Generate uniformly distributed random numbers

randn       Generate normally distributed random numbers

randatom    Create a random uncertain atom

randuss     Create a random uncertain system

ucomplex    Creates an uncertain complex parameter

ultidyn     Creates an uncertain linear time-invariant object

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