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Highly symmetric tri-axis piezoelectric bimorph accelerometer
17th IEEE International Conference on Micro Electro Mechanical Systems. Maastricht MEMS 2004 Technical Digest, 2004This paper describes the design, fabrication and test results of a novel bimorph tri-axis piezoelectric accelerometer (built on symmetric quad Parylene beams with ZnO film). Because of its highly symmetric quad-beam bimorph structure and single proof mass, this tri-axis piezoelectric accelerometer has high sensitivity, low cross-axial sensitivity, good
null Qiang Zou +3 more
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Piezoelectric Transducers Used for Piezoelectric Accelerometers with Integral Electronics
2014This chapter describes the piezoelectric (PE) transducers, the mechanical parts of piezoelectric accelerometers with integral electronics (IEPE). The function of the PE transducer in an IEPE accelerometer, its transfer function, equivalent electrical schematic, main electrical characteristics, construction, and types are described. Three basic types of
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ZERO SHIFT IN PIEZOELECTRIC ACCELEROMETERS
1967Abstract : Attempts to measure parameters of severe mechanical shock environments by use of piezoelectric accelerometers are often frustrated by the occurrence of zero shift. This phenomenon defeats measurements by rendering the reference line of the recorded waveform uncertain and perhaps preventing proper operation of recording circuitry as well ...
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On the measuring circuit of piezoelectric accelerometers
2017 Symposium on Piezoelectricity, Acoustic Waves, and Device Applications (SPAWDA), 2017Due to its excellent dynamic performance for vibration measurement, MEMS-based piezoelectric accelerometer has been studied in recent years. Piezoelectric micro-accelerometer can be regarded as a component that can produce electric charge with high internal impedance, but the quantity of electric charge is very subtle.
Hui Zhou +5 more
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Fabrication and characterization of a piezoelectric accelerometer
Journal of Micromechanics and Microengineering, 1999Zinc oxide based piezoelectric accelerometers were fabricated by bulk micromachining. A high yield was obtained in a relatively simple process sequence. For two electrode configurations a direction selectivity better than 100 was obtained for acceleration in the vertical direction and a selectivity of 3 for acceleration in the horizontal direction ...
Roger de Reus +2 more
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Piezoelectric MEMS Accelerometers for Sensing Ossicular Vibration
2021The structures comprising the human auditory periphery each perform unique functions to direct incoming sound, provide frequency-dependent gain, match impedance between air and liquids, and decompose the signal into its component frequencies. However, conductive and sensorineural hearing loss can significantly inhibit these functions, necessitating ...
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MEMS Accelerometer With Two Thin Film Piezoelectric Read-Out
2005 International Conference on MEMS,NANO and Smart Systems, 2005MEMS accelerometer using piezoelectric lead zirconate titanate (PZT) thin films as readout have been attracted a great attention due to their simple structures and high sensitivity. This paper proposed a model of microaccelerometer with two suspended flexural PZT-on-silicon beams and a central proof mass configuration.
null Bohua Sun, null Rui Zhang
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INITIAL ALIGNMENT SYSTEM OF PIEZOELECTRIC ACCELEROMETERS
Herald of Aeroenginebuilding, 2017Построена система начальной выставки пьезоэлектрических акселерометров, исключающая образования паразитной поперечной чувствительности. Обсуждены вопросы принципы построения подобных систем без привлечения дополнительных датчиков положения и выяснены режимы работы системы начальной выставки.
Karimli, T. İ., Neymatov, V. А.
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A Novel Trapezoidal ScAlN/AlN-Based MEMS Piezoelectric Accelerometer
IEEE Sensors Journal, 2021bohao hu, Guoqiang Wu, Wenjuan Liu
exaly