MATLAB® and Its Applications in Engineering: [Based on MATLAB 7.5 (R2007b)]

11.15. Impulse Response of Control Systems

The MATLAB commands used to obtain the impulse response are similar to that used for obtaining step response and are:

1. impulse (n,d)
2. impulse (A,B,C,D)
3. [y,x,t] = impulse (n, d)
4. [y,x,t] = impulse (n, d, t)
5. [y,x,t] = impulse (A,B,C,D)
6. [y,x,t] = impulse (A,B,C,D,iu)
7. [y,x,t] = impulse (A,B,C,D,iu,t)

• The commands (a) and (b) directly plot the unit impulse response, whereas for commands (c) to (g), the plot command has to be used for obtaining unit impulse response plot.

• The vector t in (d) and (g) commands, is a user-defined time vector. It specifies the time at which the impulse response is to be computed.

• The command impulse(A, B, C, D) produces a series of unit impulse response plots, one for each input and output ...