Investigation on the Impact of Excitation Amplitude on AFM-TM Microcantilever Beam System’s Dynamic Characteristics and Implementation of an Equivalent Circuit

• DOI: 10.3390/s24010107
• Publication Date: 2023-12-25T08:42:12Z
• Authors: Peijie Song; Xiaojuan Li; Jianjun Cui; Kai Chen; Yandong Chu
• Keywords: atomic force microscopy; Multisim; multistability; Chemical technology; 0103 physical sciences; equivalent circuit; nonlinear dynamic system; TP1-1185; 01 natural sciences; Article

Alterations in the dynamical properties of an atomic force microscope microcantilever beam system tapping mode can appreciably impact its measurement precision. Understanding influence mechanism dynamic parameter changes on system’s motion characteristics is vital to improve accuracy (AFM-TM). In this study, we categorize mathematical model AFM-TM into systems 1 and 2 based actual working conditions. Then, analyze alterations both due external excitation variations using bifurcation diagrams, phase trajectories, Lyapunov indices, attraction domains. The numerical simulation results show that when dimensionless g < 0.183, state period 1. When 0.9, motion. Finally, develop equivalent circuit perform related software simulations, along with practical experiments. Our experimental indicate constructed effectively presence complex environmental factors. It observed attenuates high-frequency signals, resulting a 31.4% reduction amplitude compared results. This provides essential theoretical foundation for selecting parameters cantilever beams offers novel method analyzing dynamics micro- nanomechanical systems, as well other nonlinear systems.