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Problem with SimScape Controlled Voltage Source

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Hi, I'm trying to simulate a simple RC divisor with Simulink SimScape.
As stimulation, I use Controlled Voltage Source block, controlled with the Signal Generator block. My problem is with frequencies higher than 10kHz, the amplitude of the signal changes.
This are some examples:
And the results:
Scope 1: The simulink block signal
Scope 2: The SimScape block signal
If any more information it's required please ask me.

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Accepted Answer

Juan Sagarduy
Juan Sagarduy on 8 Nov 2020
Hi Carlos
Check that the maximum step in your solver is small enough to capture the sine wave (10kHz). For example 10us. If the circuit is only resistive, amplitude should be the same regardless of frequency. However, if u have a capacitance, high frequencies are naturally ”filtered”.
Hope this helps / Juan

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Carlos Jiménez Guerra
Carlos Jiménez Guerra on 10 Nov 2020
Yes, of course, there is.
Thank you very much for your help Juan.
Juan Sagarduy
Juan Sagarduy on 10 Nov 2020
Hola Carlos
El problema era simplemente que tenias activado el filtro en el elemento Simulink-PS Converter. Si restableces la configuracion inicial, el resultado es el esperado.
Siempre que sea posible, es preferible utilizar Simscape Physical Signals como estimulo ya que el problema matematico se resuelve mejor y no se requieren derivadas o filtrado en el S-PS componente.
Buena suerte / Juan
Carlos Jiménez Guerra
Carlos Jiménez Guerra on 10 Nov 2020
Hola Juan,
Muchas gracias por tu respuesta. Me alegro de poder hablar en español, ya que hace todo un poco más fácil. Gracias, era eso. Estoy familiarizándome con el entorno y hay cosas que se hacen algo cuesta arriba.
Un saludo y una vez más gracias.

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