Problem using IDSS command

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Qandeel 2015-3-28

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https://ww2.mathworks.cn/matlabcentral/answers/195039-problem-using-idss-command

评论： Sebastian Castro 2015-3-29

Hi Everyone: I am using the 'idss' command for my project which is "Fault Detection in UAVs" and to add the fault vector in my state space I am using the 'idss' command. But the problem arises when I try to calculate the output of the state space using 'lsim' it does not seem to work with 'idss' and gives the error: For multi-input multi-output (MIMO) models both input and output indices must be given. What is the problem? Also is there any other way by which I can add fault vectors in state space? My Code is: A=[-0.64 1.51 -22.95 9.78 0 -4.19 -20.63 9.93 0 0 0.68 -2.68 -1.04 0 0 0 1.00 0 0 0 0 0 1.00 0 0];

B=[-1.25 3.19 -109.84 1.98 -4.33 -20.17 0 0 0 0]; C=[0.04 0 0 0 0 0 1 0 0 0 0 0 1 0 0 0 0 0 1 0 0 0 0 0 1]; D=zeros(5,2); sys=idss(A,B,C,D,ones(5,5)); [y]=lsim(sys,u,t,zeros(5,1));