Development of Combined Model of Quartz Pendulum Accelerometer with Closed Loop Control and Optimization of Parameters

Gnusarev, D. S.

doi:10.23919/icins.2019.8769402

Cited by 2 publications

(3 citation statements)

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“…The maximum static stress is much smaller compared with the allowable stress of a fused quartz. As a result, the fractured condition of the flexible beam can be expressed approximately by Equation (11).…”

Section: Failure Mechanism Of the Pendulum Diskmentioning

confidence: 99%

“…The fracture conditions can be determined based on Equation (11) with all parameters about the pendulum already known. The dynamic stress along the other two axis can be F I G U R E 3 Static stress distribution of the flexible beam.…”

Section: Failure Mechanism Of the Pendulum Diskmentioning

confidence: 99%

“…In consequence, accelerometers in different structure and measuring method have been successfully developed to meet the needs of applications in various fields, including Electrostatic accelerometer, MEMS accelerometer, Quartz Flexible Accelerometer (QFA) [5][6][7] etc. The majority of accelerometer research focusses on temperature compensation, calibration of output errors, structure optimisation, and servo circuits design [8][9][10][11].…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Mechanical model analysis and reliability design approach of Quartz Flexible Accelerometer under fractured state

Xiao

Zhang

Song

et al. 2023

IET Circuits, Devices & Syst

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Currently, the Quartz Flexible Accelerometer (QFA) mounted for the applications working in high acceleration environment are suffering from the fracture of the flexible beams under external acceleration shock. This paper presents the mechanical model and reliability design approach of QFA to maintain the measuring ability under a fractured state. The structural parameters changed significantly in the mechanical model under a fractured state compared to those in the original model. A modified structure to maintain the measuring ability of QFA under a fractured state is designed with the reference of the sensitive module in Electrostatic Suspended Accelerometer (ESA). The corresponding close‐loop system is corrected and discretised to ensure the stability requirements of the mechanical model. A static experiment is conducted to prove the effectiveness of the proposed model by a prototype QFA with completely fractured flexible beams. The result shows helpful on the preliminary research for QFA with the similar sensitive structure to ESA.

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Section: Failure Mechanism Of the Pendulum Diskmentioning

confidence: 99%

Section: Failure Mechanism Of the Pendulum Diskmentioning

confidence: 99%