Create a function in simulink

Question

Khalid 2016-9-27

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https://ww2.mathworks.cn/matlabcentral/answers/304656-create-a-function-in-simulink

编辑： Khalid 2016-11-13

Hi guys,

I'm working in circuit breaker switching and I would like to ask if I want to create a function in simulink (ode23s) to call a data from workspace or if there is an easy way to take the measurement direct from block measurement: v(:,1), i(:,1), g, po, and a.

to make the calculation for the following formula: g=i./v; P=v.*i; PP=po.*g.^a; % note po & a are constant.

Thanks in advance for your attention.

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Answer 1

INFOZOU 2016-10-4

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https://ww2.mathworks.cn/matlabcentral/answers/304656-create-a-function-in-simulink#answer_237206

You can use the block "from workspace" from * * sources** in Simulink. For your case, you can use directly "reshape", "add", "product" and divide blocks from * *Math operation** in Simulink.

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Khalid 2016-10-5

Thanks Lilia, I tried before but the shape it seems a bit different from what I'm expecting not the same 100% compare to when I do a direct calculation.

INFOZOU 2016-10-6

Not at all, I hope that you find a solution and I help you. May be, you should add clock and save it to workspace. In addition, you do not obtain the same curve, may be, because the horizontal axis is not the same.

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