Patent ID: 10845283

Abstract:
A sensing method includes operating a microelectromechanical system (MEMS) microbeam device; measuring structural vibrations of the MEMS microbeam device over time; selecting an operational frequency foperating that is applied to the MEMS microbeam device, where the operational frequency foperating is different from a jump frequency fJump of the MEMS microbeam device, and the MEMS microbeam device is characterized by a frequency response curve that has a linear part and a softening or hardening part, and the operational frequency foperating is selected to be in the linear part; conducting an analysis of the structural vibrations of the MEMS microbeam device based on a linear equation that relates an amplitude of the structural vibrations to a frequency from the linear part; and detecting a frequency difference between the operational frequency foperating and the jump frequency fJump of the MEMS microbeam device based on the linear equation.