Title :
Comments on Stein´s postulated high-frequency behavior of H/sub infinity / optimal controllers
Author_Institution :
Strathclyde Univ., Glasgow, UK
fDate :
6/1/1990 12:00:00 AM
Abstract :
G. Stein (26th IEEE Conf. Decision Control, Los Angeles, CA, Dec. 1987) showed that H/sub infinity / controller designs often give very unrealistic high-frequency behavior. The polynomial systems approach to H/sub infinity / is used by the commenter to demonstrate that the high frequency gain of H/sub infinity / controllers can be made to fall off at any desired rate provided improper noise and weighting models are chosen.<>
Keywords :
optimal control; polynomials; H/sub infinity / optimal controllers; high-frequency behavior; polynomial systems; Adaptive control; Convergence; Error correction; H infinity control; Lyapunov method; Optimal control; Programmable control; Robotics and automation; Robots; Stability;
Journal_Title :
Automatic Control, IEEE Transactions on
