view m-toolbox/classes/@pzmodel/getlowerFreq.m @ 19:69e3d49b4b0c
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Update ltpda_uo.fromRepository
author
Daniele Nicolodi <nicolodi@science.unitn.it>
date
Mon, 05 Dec 2011 16:20:06 +0100 (2011-12-05)
parents
f0afece42f48
children
line source
+ − % GETLOWERFREQ gets the frequency of the lowest pole or zero in the model.
+ − %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+ − %
+ − % DESCRIPTION: GETLOWERFREQ gets the frequency of the lowest pole or zero in the
+ − % model.
+ − %
+ − % CALL: f = getlowerFreq(pzm);
+ − %
+ − % <a href="matlab:utils.helper.displayMethodInfo('pzmodel', 'getlowerFreq')">Parameters Description</a>
+ − %
+ − % VERSION: $Id: getlowerFreq.m,v 1.17 2011/04/08 08:56:32 hewitson Exp $
+ − %
+ − %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+ −
+ − function varargout = getlowerFreq(varargin)
+ −
+ − %%% Check if this is a call for parameters
+ − if utils.helper.isinfocall(varargin{:})
+ − varargout{1} = getInfo(varargin{3});
+ − return
+ − end
+ −
+ − pzm = varargin{1};
+ −
+ − % Some input checking
+ − if length(pzm) > 1
+ − error('### This method works only with one input.');
+ − end
+ −
+ − poles = pzm.poles;
+ − zeros = pzm.zeros;
+ − np = numel(poles);
+ − nz = numel(zeros);
+ − f = realmax;
+ − for j=1:np
+ − pole = poles(j);
+ − fc = pole.f;
+ − if fc < f
+ − f = fc;
+ − end
+ − end
+ −
+ − for j=1:nz
+ − zero = zeros(j);
+ − fc = zero.f;
+ − if fc < f
+ − f = fc;
+ − end
+ − end
+ −
+ − if np==0 && nz==0
+ − f = realmin;
+ − end
+ −
+ − % Set outputs
+ − varargout{1} = f;
+ − end
+ −
+ − %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+ − % Local Functions %
+ − %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+ −
+ − %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+ − %
+ − % FUNCTION: getInfo
+ − %
+ − % DESCRIPTION: Get Info Object
+ − %
+ − % HISTORY: 11-07-07 M Hewitson
+ − % Creation.
+ − %
+ − %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+ −
+ − function ii = getInfo(varargin)
+ − if nargin == 1 && strcmpi(varargin{1}, 'None')
+ − sets = {};
+ − pl = [];
+ − else
+ − sets = {'Default'};
+ − pl = getDefaultPlist;
+ − end
+ − % Build info object
+ − ii = minfo(mfilename, 'pzmodel', 'ltpda', utils.const.categories.internal, '$Id: getlowerFreq.m,v 1.17 2011/04/08 08:56:32 hewitson Exp $', sets, pl);
+ − ii.setModifier(false);
+ − end
+ −
+ − %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+ − %
+ − % FUNCTION: getDefaultPlist
+ − %
+ − % DESCRIPTION: Get Default Plist
+ − %
+ − % HISTORY: 11-07-07 M Hewitson
+ − % Creation.
+ − %
+ − %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+ −
+ − function plout = getDefaultPlist()
+ − persistent pl;
+ − if exist('pl', 'var')==0 || isempty(pl)
+ − pl = buildplist();
+ − end
+ − plout = pl;
+ − end
+ −
+ − function pl = buildplist()
+ − pl = plist.EMPTY_PLIST;
+ − end
+ −