The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
In spite of successful implementations of simple adaptive control systems, the convergence of the adaptive control gains has remained an open question for more that 30 years. Moreover, the customary opinion is that the control gains do not actually converge and instead they may continue wandering without reaching any limit at all. Recently, this open question, that may give pause to practitioners...
Certain problems of adaptive systems revolve round finding a transfer function q(s) (which is not proper) such that a set of transfer functions q(s)/b(s)-1/2 is strictly positive real for all polynomial b(s) in a certain set. This paper treats this and some related problems.
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.