Development of Analysis Tools for Active Shape and Vibration Control.

摘要

Active shape and vibration control are means for obtaining optimal flow conditions around wings ducts and channels under different conditions. This means that the structure can be adapted (deformed or damped) such that aerodynamic or vibro-acoustic behaviour is optimal for that particular situation. The fast developments in computer technology makes it possible that more complex analyses in which aerodynamic and vibro-acoustic is included can be applied in the design process. At NLK research is carried out on the integration of advanced analysis tools in design environments. In this paper the tools which are developed for the analysis of active shape and vibration control are presented. The back bone of the design environment is an optimization algorithm which helps the designer to come up with optimal designs of structures. In the case of active shape and vibration control the optimal design of controllers is a new aspect. This means that in addition to the optimisation of the locations of sensors and actuators the control parameters have to be optimised. In this paper a method is proposed to optimise locations and control parameters at once with the standard finite element representation of the equations of motion as a base.