UPFRD - Uncertain parameter-varying frequency response data model
Contents
Syntax
S = upfrd(Data,Domain)
Description
S = upfrd(Data,Domain) creates an uncertain parameter-varying frequency response data model defined on an N-dimensional rectangular grid. Domain is an rgrid object that specifies the N independent variables and the rectangular grid domain. Data is an N-dimensional uncertain frequency response data (ufrd) array. Data(:,:,i1,...,iN) is the uncertain frequency response data evaluated at the point Domain(i1,....,iN).
Example
% Create a 1-by-1 UFRD defined on a 1-dimensional grid IVData = linspace(2,20,10); Domain = rgrid('a',IVData); omeg = logspace(-1,2,30); unc = ureal('unc',10) usys = rss(1,1,2,10)*unc; Data = ufrd(usys,omeg); S = upfrd(Data,Domain)
unc = Uncertain real parameter "unc" with nominal value 10 and variability [-1,1]. UPFRD with 1 Outputs, 2 Inputs, Continuous System, 30 Frequency points. The UPFRD consists of the following blocks: a: Gridded real, 10 points in [2,20], rate bounds [-Inf,Inf]. unc: Uncertain real, nominal = 10, variability = [-1,1], 1 occurrences
Overlay Bode plots at each independent variable
bode(S);
