A new topological optimization method for the mechanical and control-oriented design of compliant piezoelectric devices.

Mathieu Grossard (1) , Christine Rotinat-Libersa (1) , Mehdi Boukallel (1) , Nicolas Chaillet (2)

1 LIST (CEA) - Laboratoire d'Intégration des Systèmes et des Technologies
2 FEMTO-ST - Franche-Comté Électronique Mécanique, Thermique et Optique - Sciences et Technologies (UMR 6174)

This paper presents a new method developed for the optimal design of piezoactive compliant mechanisms. It is based on a flexible building blocks method, called FlexIn, which uses an evolutionary approach, to optimize a truss-like structure made of passive and active piezoelectric buiding blocks. An electromechanical approach, based on a mixed finite element method, is used to establish the model of the piezoelectric block. A planar monolithic compliant micro-actuator is synthesized by the optimization method, based on the specifications drawn from both mechanical and innovative control-oriented considerations. In particular, these last criteria have been drawn here to optimize modal controllability and observability of the system, which is particularly interesting when considering identification and control of flexible structures.

Mots clés: topology optimization; Piezoactuator design; compliant mechanisms; microgripper; control-oriented design; topology optimization.

Domaines: Micro et nanotechnologies/Microélectronique

Mathieu Grossard, Christine Rotinat-Libersa, Mehdi Boukallel, Nicolas Chaillet. A new topological optimization method for the mechanical and control-oriented design of compliant piezoelectric devices.. 8th World Congress on Structural and Multidisciplinary Optimization, WCSMO-8'09., Jun 2009, Lisbonne, Portugal. pp.1-10. ⟨hal-00432708⟩