robustexample32007

robustexample32007 - Robust Control Systems - Using the...

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Robust Control Systems — Using the Matlab toolbox J Treurnicht April 23, 2007 1 Background The Matlab Robust Control toolbox was developed along two routes: (1) a lean and simple Robust Control toolbox; and (2) a feature-rich Mu toolbox. These two toolboxes are now combined in the new Robust Control Toolbox with most of the existing tools but with a new set of tools that integrate well with the Control Toolbox. 2 Guide to using the Toolbox 2.1 Systems with Uncertainty To create plants with uncertainty, a number of Matlab commands such as ureal , ucomplex are used for parameters and udyn and ultidyn can set up transfer functions. To set up an uncertain plant transfer function G 1 ( s ) with G 1 ( s ) = k s ( s + a ) , k [10 , 40] , k nom = 15 , a [3 ± 50%] we can use the commands k1 = ureal(’k’,15,’Range’,[10 40]); % k vary between 10 and 40, nominal is 15 a1 = ureal(’a’,3,’percent’,50); % a vary by +/- 50 percent; nominal is 3 %G1 = ss([0 1; 0 -a1],[0; k1],[1 0], []);

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This note was uploaded on 02/04/2012 for the course ECE 445 taught by Professor Hert during the Spring '11 term at Maryland.

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robustexample32007 - Robust Control Systems - Using the...

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