Can't connect blocks in simulink

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Hello.
I made an RC, RL, CR, LR and couple of RLC circuits in simulink with ac voltage source which by default generates a sinusoidal wave as an input and they are connected to the scope as an output so i can see the behaviour of the signal. My next task is to simulate the work of these filters by having a different signal shape like sawtooth or square wave. When i try to drag&drop some sawtooth or square wave generator and connect it with the rest of the circuit i get red dashed line which means that i cannot connect it to my circuit.
Please someone help me solve this problem, it is a bit urgent.
Thank you!

采纳的回答

Jonas
Jonas 2019-9-16
编辑:Jonas 2019-9-16
The block you are trying to connect produces a Signal as an output. You need to use a Controlled Voltage Source and provide the Signal Generator block to the signal input port of the Controlled Voltage Source.

更多回答(1 个)

Walter Roberson
Walter Roberson 2019-9-15
The AC source you have used is https://www.mathworks.com/help/physmod/sps/powersys/ref/acvoltagesource.html from Simscape Electrical, Specialized Power Source. Simscape Electrical is layered on top of Simscape.
The Signal Generator you show highlighted is Simulink.
Simscape Specialized Power Source is, if I recall correctly, considered a different Domain than Simscape Electrical. But either way, even if it is not, Simscape is certainly considered a different Domain than Simulink. Different Domains cannot be connected except through conversion blocks.
  7 个评论
T MURALI KRISHNA
T MURALI KRISHNA 2021-4-12
unable to conncect current sensor to inductor branch
please help me in this regard
Walter Roberson
Walter Roberson 2021-4-12
编辑:Walter Roberson 2021-4-12
you are trying to use the Simscape Electrical Specialized Power Systems sensor https://www.mathworks.com/help/physmod/simscape/ref/currentsensor.html
I have having difficulty finding some of the blocks that you use in the rest. One of the items looks like it might be Linear Inductor, which is from Simscape basic library, which is a different domain than SPS.
https://www.mathworks.com/help/physmod/simscape/ref/inductor.html
To advise you about proper sensor I will need more information about exactly which blocks you using.

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