(s+a)(s+b) plant is sampled using a zero-order hold (ZZOH) before the signal is fed to a digital controller. Using 0.45 second as sampling time and K=14; a=3; b=5, Do the following. Zero-order Hold Plant Plant ZOH Gp(s) G(z) Figure 2 i. Obtain the z-transform G(z) ii. Discuss the importance of a ZOH in digital control systems

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A certain analog plant function is shown in figure 2 and its transfer function G,(s) =
(s+a)(s+b)· This
plant is sampled using a zero-order hold (ZOH) before the signal is fed to a digital controller. Using 0.45
second as sampling time and K=14; a=3; b=5, Do the following.
Zero-order
Plant
Plant
Hold
ZOH
Gp(s)
G(z)
Figure 2
i. Obtain the z-transform G(z)
ii. Discuss the importance of a ZOH in digital control systems
Transcribed Image Text:K A certain analog plant function is shown in figure 2 and its transfer function G,(s) = (s+a)(s+b)· This plant is sampled using a zero-order hold (ZOH) before the signal is fed to a digital controller. Using 0.45 second as sampling time and K=14; a=3; b=5, Do the following. Zero-order Plant Plant Hold ZOH Gp(s) G(z) Figure 2 i. Obtain the z-transform G(z) ii. Discuss the importance of a ZOH in digital control systems
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