Combined topology and shape optimization of controlled structures

Abstract

By definition, mechatronic systems involve coupled structural and control properties. Therefore, optimization of mechatronic systems requires an integral optimization of both. In this paper, we study the optimal design of a simplified motion control system. In particular, we develop a methodology which utilizes topology and shape optimization to create a parameterized structure and improve its dynamic characteristics. The obtained structure is used as a starting point for combined structural and control optimization. We compare performances of the systems optimized by sequential and nested optimization approaches. The nested optimization procedure results in a better final performance.

Keywords: topology optimization, nested optimization, combined structural and control optimization, proportional-integral-derivative (PID) controller.