How to simulate the matrix in Simulink

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Mahsen Al-Ani 2017-7-6

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回答： Akhilesh Mishra 2017-7-11

Dear everyone, I have matrix that has variable in it and I need multiply this matrix with vector that also has variable. How can I do that? fox example [ 1-q0 -0.5q1c -0.5q1s; -q1c 1-q0 0;q1s 0 1-q0]*[vc0;vc1;vc2]

q0,q1c,q1s,-q1c,vc0;vc1;vc2 are variables

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Answer 1

Akhilesh Mishra 2017-7-11

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I am not sure of what do you mean by simulating a matrix in Simulink. If you just want to multiply the matrix with a vector having variables, it can be done in the MATLAB command window by entering the following commands-

 >> syms q0 q1c q1s vc0 vc1 vc2
 >> [ 1 - q0 -0.5*q1c -0.5*q1s; -q1c 1 - q0 0;q1s 0 1 - q0]*[vc0;vc1;vc2]
 ans =
 - (q1c*vc1)/2 - (q1s*vc2)/2 - vc0*(q0 - 1)
                   - q1c*vc0 - vc1*(q0 - 1)
                     q1s*vc0 - vc2*(q0 - 1)

The resulting answer is a 3x1 vector as expected. Please note the 'syms' command is a function of Symbolic Math Toolbox, details provided in the link below -

https://www.mathworks.com/help/symbolic/syms.html