STEVEN HALL: The first problem is right here.
I'm going to give you a chance to practice
doing a proportional derivative controller.
And I've actually written the specifications directly
in terms of phase margin and crossover frequency.
So you can either imagine that that's
the way the specifications are given
or that we started with a rise time and peak overshoot
and derived these.
So your goal is to design a k of s that
meets these specifications.
So if everyone could please, form up in groups of two
around the room as usual.
I'm Steve Hall, I'm the instructor
of 1606, which is Principles of Automatic Control.
It's a junior level classical control
class, which I've been teaching for about six years.
So recitations in 1606 are a little different than most
recitations at MIT.
In most recitations, the instructor
would present a series of problems maybe related
to the homework, just to give examples of how
the problem should be worked.
Sometimes they might have students try some themselves.
In my recitations, it's much more active.
Students are always standing up, we work at the board,
usually in groups of two.
So there might be 10 groups of two
spread around the room, each group of two
working at a board.
A blackboard, a whiteboard, could be a poster board.
They're working problems and the TA
and I are walking around and helping when we can,
answering questions when students
have them, and generally just coaching,
trying to help the students understand what they're doing
and solve the problems.
It really is a chance for students
to understand what they know and what they don't know
and to exercise the skills that they've learned in the class.
And if they have problems with those skills,
it's a chance for me to help them learn them better.