Step response of discrete-time systems the system under consideration is a discrete-time system, step will plot the output as piecev onstant. If the sampling time is unspecified, the output time scale will be in samples. If ampling time is specified, the time scale will be in seconds. Consider the following example. um - 1; en = (1 0.5); = 0.1; ys tf(num, den, Ts) tep (sys) ys = Step Response

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Author:James Kurose, Keith Ross
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Step response of discrete-time systems
If the system under consideration is a discrete-time system, step will plot the output as piecewise
constant. If the sampling time is unspecified, the output time scale will be in samples. If the
sampling time is specified, the time scale will be in seconds. Consider the following example.
num = 1;
den = [1 0.5];
Ts = 0.1;
sys = tf (num, den, Ts)
step (sys)
sys =
Step Response
0.9
1
0.8
0.7
0.6
z + 0.5
0.5
0.4
0.3
Sample time: 0.1 seconds
0.2
Discrete-time
transfer
0.1
function.
0.2
0.4
0.6
0.8
1.2
1.4
1.6
1.8
Time (seconds)
Amplitude
1.
Transcribed Image Text:Step response of discrete-time systems If the system under consideration is a discrete-time system, step will plot the output as piecewise constant. If the sampling time is unspecified, the output time scale will be in samples. If the sampling time is specified, the time scale will be in seconds. Consider the following example. num = 1; den = [1 0.5]; Ts = 0.1; sys = tf (num, den, Ts) step (sys) sys = Step Response 0.9 1 0.8 0.7 0.6 z + 0.5 0.5 0.4 0.3 Sample time: 0.1 seconds 0.2 Discrete-time transfer 0.1 function. 0.2 0.4 0.6 0.8 1.2 1.4 1.6 1.8 Time (seconds) Amplitude 1.
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