Discovery of sparse hysteresis models for piezoelectric materials
This addresses hysteresis modelling for piezoelectric materials, which is incremental as it applies an existing method to a new domain.
The study tackled modelling hysteresis in piezoelectric materials by applying sparse-regression techniques, resulting in a concise model that accurately predicts hysteresis for both simulated and experimental data, demonstrating efficiency and robustness compared to traditional methods.
This article presents an approach for modelling hysteresis in piezoelectric materials, that leverages recent advancements in machine learning, particularly in sparse-regression techniques. While sparse regression has previously been used to model various scientific and engineering phenomena, its application to nonlinear hysteresis modelling in piezoelectric materials has yet to be explored. The study employs the least-squares algorithm with a sequential threshold to model the dynamic system responsible for hysteresis, resulting in a concise model that accurately predicts hysteresis for both simulated and experimental piezoelectric material data. Several numerical experiments are performed, including learning butterfly-shaped hysteresis and modelling real-world hysteresis data for a piezoelectric actuator. The presented approach is compared to traditional regression-based and neural network methods, demonstrating its efficiency and robustness. Source code is available at https://github.com/chandratue/SmartHysteresis