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This example shows how to use the slew rate as an estimate of the rising and falling slopes of a triangular waveform. Create three triangular waveforms. One waveform has rising-falling slopes of $$\pm 2$$, one waveform has rising-falling slopes of $$\pm \frac{1}{2}$$, and one waveform has a rising slope of $$+2$$ and a falling slope of $$-\frac{1}{2}$$. Use `slewrate`

to find the slopes of the waveforms.

Use `tripuls`

to create a triangular waveform with rising-falling slopes of $$\pm 2$$. Set the sampling interval to 0.01 seconds, which corresponds to a sample rate of 100 hertz.

dt = 0.01; t = -2:dt:2; x = tripuls(t);

Compute and plot the slew rate for the triangular waveform. Input the sample rate (100 Hz) to obtain the correct positive and negative slope values.

slewrate(x,1/dt)

`ans = `*1×2*
2.0000 -2.0000

Change the width of the triangular waveform so it has slopes of $$\pm \frac{1}{2}$$. Compute and plot the slew rate.

x = tripuls(t,4); slewrate(x,1/dt)

`ans = `*1×2*
0.5000 -0.5000

Create a triangular waveform with a rising slope of $$+2$$ and a falling slope of $$-\frac{1}{2}$$. Compute the slew rate.

x = tripuls(t,5/2,-3/5); s = slewrate(x,1/dt)

`s = `*1×2*
2.0000 -0.5000

The first element of `s`

is the rising slope and the second element is the falling slope. Plot the result.

slewrate(x,1/dt);