11.12. Standard Input Test Signals
The standard input test signals used for the analysis and design of control systems are tabulated in the Table 11.1 with their mathematical representations, Laplace Transform form and graphical representation.
Name of the Signal | Mathematical Expression | Laplace Transform Form | Graphical Representation | |
---|---|---|---|---|
Step signal | r(t) | = 0; t < 0 | R(s) = A/s |
|
= A; t > 0 | ||||
Ramp signal | r(t) | = 0; t < 0 | R(s) = A/s2 |
|
= At; t > 0 | ||||
Parabolic signal | r(t) | = 0; t < 0 | R(s) = A/s3 |
|
= At2/2; ... |
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