A Surrogate Model based Constrained Optimization Architecture for the Optimal Design of Electrohydrostatic Actuators for Aircraft Flight Control Surfaces

摘要

This work pertains to the development of an optimization architecture for the optimal design of electrohydrostatic actuators for aircraft flight control surfaces in the presence of subsystem and aircraft level design constraints. A Modeling and Simulation (M&S) environment, described in detail in a separate work, is used to simulate an aircraft mission and capture relevant and constraining flight conditions and load cases. The system behavior is represented by a surrogate model that allows for rapid and computationally inexpensive evaluation of the responses of interest. The surrogate model is used to perform constrained optimization, followed by a validation of the optimal result using the M&S environment. The optimal designs obtained for two United States Air Force combat aircraft are presented and discussed, but the methodology is equally valid for other aircraft and control surface configurations. An additional capability arising from this architecture is the ability to analyze the sensitivity of the design to each of the design parameters influencing it.