Relay block to generate signal PWM

Question

Hamdi 2011-8-21

0
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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/14121-relay-block-to-generate-signal-pwm

采纳的回答： Fangjun Jiang

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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Answer 1

Fangjun Jiang 2011-8-21

1
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https://ww2.mathworks.cn/matlabcentral/answers/14121-relay-block-to-generate-signal-pwm#answer_19339

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.