Analog circuits in Simulink
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I want to implement simple circuits such as RC circuits in simulink with input from a signal generator. Unfortunately, I always encounter errors such as "no solver block" etc. Here's the pic of the model: http://img713.imageshack.us/img713/5582/96748583.png
I am new to Simulink, so this might seem a bit silly but any help is welcome.
Doug Eastman on 13 Mar 2012
The error seems to indicate that you are missing a solver block, but you have one in the image you've attached. For the case of the attached image, I would expect a "missing reference node" error. You need to include at least one Electrical Reference in a Simscape electric system.
Also I noticed you are trying to connect a regular Simulink Scope to your circuit. To measure a value in the circuit you need to use an Electrical Sensor such as a Current Sensor or Voltage Sensor and then convert that signal to a regular signal using a PS-Simulink Converter block, then you can send that signal to a Scope.
It might be easiest to start from an example. Try loading ssc_new_elec by typing that at the MATLAB command prompt. That brings up a basic model and a helpful palette that you can use to quickly build up more models.
More Answers (1)
bijeta Chakraborty on 13 Mar 2012
I am working on implementation of PWM generator circuit which uses a carrier signal and input signal. I am trying to use a comparator for that.But when I start simulating it gives me error of solver.
I used the ssc_new_elec to start with and it gives me error as below Nonlinear solver: Linear Algebra error. Failed to solve using iteration matrix. Initial conditions solve failed to converge. Equations of one or more components may be dependent or inconsistent. This can cause problems in transient initialization. Here is the set of components involved: 'comparator/Voltage Source (SL)/Controlled Voltage Source'
Any help/comments would be helpful.
Best Regards Bijeta Chakraborty