A generic modelling approach for studying the contact mechanism and dynamic behavior of bimodal standing wave piezomotors

摘要

Application of bimodal standing wave piezomotors is complicated by problems related to the non-linear friction drive mechanism between drive point and slider, e.g. particle contamination, heat generation and structural vibrations. An advanced contact model based on Kalker’s rolling theory is included in a lumped-parameter systemrepresenting suspension dynamics, piezomotor dynamics and slider/bearing dynamics. This model allows studying the influence of several design parameters on setup performance. Simulation results are presented and qualitatively assessed.