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powersas.m/internal/getFluctuationTagPadeMod.m

55 lines
2.5 KiB

function [fluctRate,flucTag]=getFluctuationTagPadeMod(coeffA,coeffB,maxTime,rateThreshold)
%
% FUNCTION getFluctuationTagPadeMod
%
% Author: Rui Yao <ruiyao@ieee.org>
%
% Copyright (C) 2021, UChicago Argonne, LLC. All rights reserved.
%
% OPEN SOURCE LICENSE
%
% Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:
%
% 1. Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.
% 2. Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution.
% 3. Neither the name of the copyright holder nor the names of its contributors may be used to endorse or promote products derived from this software without specific prior written permission.
%
%
% ******************************************************************************************************
% DISCLAIMER
%
% THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED
% WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
% PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY
% DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
% PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
% CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
% OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
% ***************************************************************************************************
%
if nargin<4
rateThreshold=0.0005;
end
sz=max([size(coeffA,2);size(coeffB,2)]);
coeffAe=zeros(size(coeffA,1),sz);
coeffBe=zeros(size(coeffB,1),sz);
coeffAe(:,1:size(coeffA,2))=coeffA;
coeffBe(:,1:size(coeffB,2))=coeffB;
constAB=coeffAe(:,1)./coeffBe(:,1);
coeffCe=coeffAe-coeffBe.*repmat(constAB,1,sz);
[ubb,lbb]=findPolynomialBounds(coeffBe,maxTime);
[ubc,lbc]=findPolynomialBounds(coeffCe(:,2:end),maxTime);
denSgn=ubb.*lbb;
flucNumerator=max(abs([ubc,lbc]),[],2);
den=min(abs([ubb,lbb]),[],2);
fluctRate=flucNumerator./den;
flucTag=all((denSgn>0)&(fluctRate<rateThreshold));
end