Question

我在Scilab中使用以下代码来使用矢量化方法生成脉冲宽度调制。但是我在改变周期数，TimePeriod，百分比时会得到不合适的情节。可以帮助我吗？

percent=input("Enter the percentage:");
TimePeriod=input("Enter the time period:");
Cycles=input("Enter the number of cycles:");

x=0:Cycles*TimePeriod;
t=(percent/100)*TimePeriod;

for n=0:0.01:Cycles
    y(((n*TimePeriod)< x) & (x<(n*TimePeriod+t))) = 1;
    y(((n*TimePeriod+t)< x)& (x<((n+1)*TimePeriod))) = 0;
    plot(y,'b','LineWidth',2)
end

Answer 1

我修改了你的代码，现在它可以工作了。由于具有许多调用的for循环，您的代码非常慢。（Scilab和Matlab最适合进行矩阵运算。因此它们在循环中减弱。我将调用次数减少到循环次数。

percent=input("Enter the percentage:");
TimePeriod=input("Enter the time period:");
Cycles=input("Enter the number of cycles:");
ts = 0.01; // sample time

x=ts:ts:Cycles*TimePeriod;
on  = ones(1, percent/100*TimePeriod/ts);
off = zeros(1, (1 - percent/100)*TimePeriod/ts);
signal = [];
for cycle = 1:Cycles 
signal = [signal, on, off];
end

figure(1)
plot2d(x, signal);

使用Scilab生成PWM

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