Insensitivity of Control System Performance to Controller and System Parameters

An experimental and theoretical study of the CONDUIT sensitivity tools was conducted. The literature on sensitivity in nonlinear programming was reviewed to see in what ways it could be applied to CONDUIT. One result of this was the conclusion that the current insensitivity measure in CONDUIT is the right one. The question of scaling of the specifications in CONDUIT was also studied. Many simple examples were created, analyzed and, in most cases, solved. However, no general solution to the scaling problem was found. Instead, the appropriate scaling needs to be determined by review of a reasonable number of real aircraft design problems.