Automatica, Vol.36, No.8, 1243-1244, 2000
Comments and corrections to "Robustness and optimality of linear quadratic controller for uncertain systems"
The robustness and optimality of linear quadratic controllers for uncertain systems were addressed in Mehdi, Hamid and Perrin (Automatica, 32(7), (1996) 1081-1083). However, some of their results are shown to be incorrect. This note presents some new results to correct these such that an approach to the design of linear quadratic robust controllers can be established.