Parametric Tuning of Natural Frequencies of Tuning Fork Gyroscope

Abstract

The sequence of mode shapes play a vital role in designing a dual mass tuning fork gyroscope (TFG). To avoid loss of energy, a desired separation of frequencies between operating modes (out-of-phase drive and sense) and parasitic modes is required. Hence, regulation of mode shapes is an essential criterion in TFG design. In the present work, the influence of several crucial parameters such as coupling mechanisms and dimensions of folded beams on the in-plane frequencies are studied numerically by using finite element based COMSOL software.