Foryś, Urszula - ed. ; Rejniak, Katarzyna - ed. ; Pękala, Barbara - ed. ; Bartłomiejczyk, Agnieszka - ed.
A nonsmooth optimization control (NOC) based on a sandwich model with hysteresis is proposed to control a micropositioning system (MPS) with a piezoelectric actuator (PEA). In this control scheme, the hysteresis phenomenon inherent in the PEA is described by a Duhem submodel embedded between two linear dynamic submodels that describe the behavior of the drive amplifier and the flexible hinge with load, respectively, thus constituting a sandwich model with hysteresis. ; Based on this model, a nonsmooth predictor for sandwich systems with hysteresis is constructed. To avoid the complicated online search for the optimal value of the generalized gradient at a nonsmooth point, the method of the so-called weighted estimation of generalized gradient is proposed. In order to compensate for the model error caused by model uncertainty, a model error compensator (MEC) is integrated into the online optimization control strategy. Afterwards, the stability of the control system is analyzed based on Lyapunov`s theory. Finally, the proposed NOC-MEC method is verified on an MPS with a PEA, and the corresponding experimental results are presented.
Zielona Góra: Uniwersytet Zielonogórski
AMCS, volume 33, number 3 (2023) ; click here to follow the link
Biblioteka Uniwersytetu Zielonogórskiego
Jul 28, 2025
Jul 28, 2025
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https://zbc.uz.zgora.pl/repozytorium/publication/101612
| Edition name | Date |
|---|---|
| Nonsmooth optimization control based on a sandwich model with hysteresis for piezo-positioning systems | Jul 28, 2025 |
Luo, Na Tan, Yonghong Dong, Ruili Iacono, Mauro - ed. Kołodziej, Joanna - ed.
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