BITS Faculty Publications

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Subject: search.filters.subject.Gyroscope

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    Experimental studies on dynamic response of piezoelectric based hemispherical resonator gyroscope
    (Emerald, 2024-08) Rao, Venkatesh K. P.; Yenuganti, Sujan
    This work measures the performance characteristics of a hemispherical resonator gyroscope (HRG) and compares it with a numerical model. This work we explore the optical and piezoelectric measurement methods to determine the resonant frequency of HRG. These experimental results are compared with their numerically obtained values. To explore the performance characteristics, the effect of varying actuation voltages on the sense mode displacement and the piezoelectric sensor output was studied in the absence of input angular rate. The structure was then subjected to range of angular rate signals, at a constant actuation voltage and the corresponding sensor response was analysed.
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    Design and Analysis of Single Drive Tri-Axis MEMS Gyroscope
    (Springer, 2022-11) Rao, Venkatesh K.P.
    MEMS based single and dual-axis gyroscopes have been widely explored for potential application in automotive, space, defense, and consumer electronics sectors. Tri-axis gyroscopes based on MEMS, however, have been sparsely studied. This work presents a novel design for tri-axis MEMS gyroscope and an analytical model to obtain the natural frequencies in drive and sense modes. These frequency values have been compared with the numerically obtained frequencies using Finite Element Analysis (FEA). The analytical results lie within 10% of their numerically obtained values. The frequency matching process involves many iterations of geometric dimensions if the end application requires minor design changes. The proposed analytical model will make the design customization easy as the frequencies of each mode will be expressed as a function of critical geometrical parameters saving multiple numerical runs required for design optimization.