Unless otherwise indicated, all problems are from the course text.

Ignore the instructions in the book. For each problem, sketch the Bode plot by hand by adding the contributions from each of the terms in the open loop transfer function. Check your answer with Matlab. For each problem, determine whether or not the unity feedback closed-loop system is stable and the system gain and phase margins.

1. 9.10.1:2
2. 9.10.1:4
3. 9.10.1:6
4. 9.10.1:8
5. 9.10.1:10
6. 9.10.1:12

The Unknown

As we know,
There are known knowns.
There are things we know we know.
We also know
There are known unknowns.
That is to say
We know there are some things
We do not know.
But there are also unknown unknowns,
The ones we don't know
We don't know.

-- Donald Rumsfeld, Feb. 12, 2002, Department of Defense news briefing.