If-Else inside Stateflow Chart

Question

Rashmi Bharadwaja 2017-8-18

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https://ww2.mathworks.cn/matlabcentral/answers/353175-if-else-inside-stateflow-chart

评论： Rashmi Bharadwaja 2017-8-22

Hello all, I am using if-else conditions indside a stateflow chart. When I try to simulate the chart, I get model and coder error. The error says "Chart input data 'signal_name' on left hand side of an expression. I am not able to figure the problem. If anyone knows a solution to this, please let me know.

Thanks in advance.

Cheers, Rashmi

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Answer 1

ES 2017-8-21

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https://ww2.mathworks.cn/matlabcentral/answers/353175-if-else-inside-stateflow-chart#answer_278648

In that case You have to implement a new output variable (output to Simulink). And to this output variable, you can assign the input variable's value.

You can't set value to an input variable.

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Rashmi Bharadwaja 2017-8-22

This worked. Thanks a lot!

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Answer 2

ES 2017-8-18

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https://ww2.mathworks.cn/matlabcentral/answers/353175-if-else-inside-stateflow-chart#answer_278432

From the error, I think you are trying to assign value to an input signal example {signal_name = xyz}. This is not possible.

What is the exact error message? and when do you get it?

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Rashmi Bharadwaja 2017-8-21

The signals used as inputs to the stateflow chart are also used as conditions and should also be output from the statechart with changing values. The changing ouputs are due to some if-else loops in the chart. At each condition, the output value is different. Do you have any idea how this could be done? I get the above error when I try to simulate the chart. There is a "model error and coder error".

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