We address the problem of obtaining well-defined criteria for multiobjective
optimal control systems. Necessary and sufficient conditions for an optimal
control functional to be nonessential are proved. The results provide effective
tools for determining nonessential objectives in vector-valued optimal control
problems.Comment: Presented at the 5th Junior European Meeting on Control & Information
Technology (JEM'06), September 20-22, 2006, Tallinn, Estoni
