H¥ : 1984 H/ONR Workshop Approach

•Solution
approach:

• Parametrize all stabilizing controllers via
[Youla *et
al*]

• Obtain realizations of the closed-loop
transfer matrix

• Transform to 2x2 block general distance
problem

• Reduce
to the Nehari problem and solve via Glover

•Properties
of the solution:

• State-space using standard operations

• Computationally intensive (many Ric.
eqns.)

• Potentially high-order controllers

• Find solution < g , iterate for optimal