I have an element with an impedance that has a complicated relationship with frequency. I have defined the mathematical relation for the impedance as a MATLAB function and used MATLAB function block to simulate it in Simulink. The problem is that I could not find any variable impedance element which can be controlled by a signal in Simulink. The only element which could be used is variable resistance that neglects the imaginary part of the impedance. On the other hand, impedance block is only useful for defining linear systems with zeros and poles and polynomial type relations for impedance. The impedance relation with angular frequency is attached.
Thank you in advance.
Simply construct sub functions of you C, R and Lambda in Matlab, and a combined function Z_{0} linked by the small functions. It will than be easily to simulate. See e.g., https://www.mathworks.com/videos/functions-and-subfunctions-97413.html
https://www.mathworks.com/help/matlab/function-basics.html
Thank you for your answer, Dr. Mohammad Ali.
I am going to use this element in a complicated power-electronical circuit and examine this element's behavior when it is connected to that circuit. So I need to exert the corresponding signals related to the function of impedance to an electrical element that can have arbitrary or user-defined impedance. My problem is not with simulating the function of impedance, I cannot simulate the electrical behavior of this element in an electrical simulation in Simscape. Since the mentioned circuit is nonlinear, it cannot be simulated mathematically by block diagrams of Simulink and I need to simulate this element in an electrical simulation.
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http://dr-mohamad-arinal.simplesite.com/432957824
You should be able to use your required Systematic blocks inside the Simscape, adding appropriate converters (Electrical to Systematic blocks and vice versa).
Thank you Doctor Babazadeh,
I couldn't find any kind of converter for converting the systematic blocks to electrical but there are some physical signal to Simulink converters and vice versa. It may be possible to convert the input and output signals to systematic blocks and simulate the block's electrical behavior by exerting feedbacks to the electrical simulation. Did you mean this kind of conversion or there is some way to convert systematic blocks to Simscape elements?
Yes. It might be right! It is actually a kind of artwork to find and apply appropriate interfaces while bringing together different areas in Simulink.
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