Relay block to generate signal PWM
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my probleme : i have sinsoidal signal the maximum valeur is 1 V and the minimum is 0.7V .
i can't use Relay block to generate signal PWM
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Fangjun Jiang
le 21 Août 2011
You mean you have y=a*sin(t), 0.7<a<1? To derive a PWM signal from a sinusoidal wave based on its magnitude, you just need to compare it with a constant. In your case, try to use a Relational Operator block to compare the sinusoidal wave with constant 0.8 and see what is the output of the Relational Operator block.
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Paulo Silva
le 21 Août 2011
Why do you need the relay block to generate the PWM?
This should suffice:
[sine wav] -----> [compare to constante] ------>(PWM output)
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