Modeling of a piezoelectric device with shocks management using VHDL-AMS

This work highlights the facilities of VHDL-AMS to model multi-physical systems and deal with time discontinuities. The modeling and simulation of a piezo-electric device used to spray liquids are presented. Since it is composed of several piezoelectric and metallic parts, a modular approach is proposed. A generic behavioral model for each part type - considered as a mechanical transmission line - is first developed. Then, the whole device is modeled with a structural description. Besides, since there are nonpermanent mechanical contacts between some of the parts, a shocks management is added.