In the TCP/IP network link of 41, let L 0:8, but assume
Chapter 10, Problem 41(choose chapter or problem)
The linearized model of a particular network link working under TCP/IP and controlled using a random early detection (RED) algorithm can be described by Figure 10.20 where G(s) = M(s)P(s); H = 1, and (Hollot, 2001)
M(s) = \(\frac{0.005 L}{s+0.005}\); P(s) = \(\frac{140625 e^{-0.1 s}}{(s+2.67)(s+10)}\)
a. Plot the Nichols chart for L = 1. Is the system closed-loop stable?
b. Find the range of L for closed-loop stability.
c. Use the Nichols chart to predict %OS and \(T_s\) for L = 0.95. Make a hand sketch of the expected unit step response. unit step response simulation.
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