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Date of Publication:2022-10-10

Journal:大连理工大学学报

Issue:2

Page Number:249-254

ISSN No.:1000-8608

Abstract:A new approach of coordinate transform to model the hysteresis nonlinearity between the displacement and the voltage across piezoceramic actuator is adopted, which takes advantage of the fact that there is approximate comparability among the ascending curves and among descending curves in a measured hysteresis loop. This model can predict any future ascending or descending displacement under a given voltage only employing the first ascending curve and the first descending curve and it is applicable to any circumstance no matter the driving voltage is periodical or not. The model accuracy is analyzed via experiments under different driving procedure, frequency, cycles and different width of wafer. Experiments show that the maximum prediction error is less than 2.8% under small driving cycles, and the error will increase along with the increasing of cycles.

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