Abstract
This paper simultaneously considers both structure optimization and optimal control system design for an aero-servo-elastic system, such as an aircraft structure with an active control system. Dynamic system characteristics are calculated by using several analysis computer programs, including structural analysis, aerodynamic load analysis, and control system analysis. Therefore, system design optimization has to deal with multiple systems having multiple objectives, and handle a large number of design variables. This paper will propose efficient optimization techniques: (1) a job-control program manages each analysis program linked with another program by data files; (2) each program outputs sensitivity data to construct a linear model of the total system; and (3) a sequential goal programming (GP) formulation is used for multiple-objective design problems. As a numerical example, simultaneous design optimization is considered for a simple cantilever wing with an aileron surface actively controlled for alleviation of gust loading.
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