How to solve this error?

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Nagarjuna Arjun 2019-8-6

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https://ww2.mathworks.cn/matlabcentral/answers/475013-how-to-solve-this-error

评论： Renato SL 2019-8-6

Mainone.slx

Error in port widths or dimensions. Output port 1 of 'Mainone/Decoupling/In2' is a one dimensional vector with 3 elements.

Error in port widths or dimensions. Invalid dimension has been specified for input port 1 of 'Mainone/Decoupling/Transfer Fcn1'.

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Nagarjuna Arjun 2019-8-6

I Have a Coupled Tank System With Two inputs and Two outputs. Two Tanks arw Connected by valve. I am trying Design a Fuzzy Logic Controller to control the inflow of the system based on the levels of fluid in the respected tank.

The blocks are Fuzzy Controllers. Based on error and rate of error i am trying to find out the suitable Proportional Gain, Integral Gain, and Derivative Gain. After finding these gains i am unable to mix these gains as Fuzzy-PID Controller.

Renato SL 2019-8-6

I have never dealt with Fuzzy Logic Controllers so I don't understand how it works as a whole, but at the part in question, you have these 3 blocks to find the values of the gains but inside you have the same blocks and functions. I don't know if that's the case, but it doesn't seem to be the right functions to me.

And after that, you have the values of the gains but you feed the value to a mux, then to a transfer function. This is also strange to me.

Anyway, perhaps you should check out Andrey Kiselnikov's answer if the concern is only on how to shape the vector to the appropriate form.

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