18.2 UNIT IMPULSE FUNCTIONS A unit impulse function For a unit step function, If we look at an input signal (force here) we can break it into very small segments in time. As the time becomes small we can approximate it with a set of impulses. Figure 18.1 An impulse as a brief duration (instant) pulse
A unit impulse function
For a unit step function,
If we look at an input signal (force here) we can break it into very small segments in time. As the time becomes small we can approximate it with a set of impulses.
