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- W4308662022 abstract "AbstractLinear actuator device for gas compression has significant importance in a cryocooler system. The compressor provides acoustic power to drive the cooling phenomenon in the pulse tube cryocooler. In general, the compressor is designed based on electromagnetic effect. But, such compressors have limiting factors, such as heating due to eddy current, large size, and exhibit electromagnetic interference (EMI), which is undesired for space applications. A novel linear-drive compressor actuated using a piezoelectric actuator is presented in this paper. Piezoelectric actuators have an inherent limitation of extremely small elongation as compared to their length. A hydraulic amplification system along with resonance amplification is proposed. Motion transfer is done using different diameter pistons and housing assembly. This paper includes theoretical formulation and numerical study of the amplification system. An equivalent analytical spring-mass-damper model is formulated to determine resonance frequency. Amplitudes of the piezoelectric actuator elongation and piston displacement are shown. Design is aimed to achieve an operating frequency of 100 Hz.KeywordsPiezoelectric actuatorLinear compressorHydraulic amplificationResonance amplification" @default.
- W4308662022 created "2022-11-13" @default.
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- W4308662022 date "2022-11-10" @default.
- W4308662022 modified "2023-09-30" @default.
- W4308662022 title "Piezo-Actuated and Hydraulically Amplified Linear Compressor for Pulse Tube Cryocooler" @default.
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- W4308662022 doi "https://doi.org/10.1007/978-981-19-6470-1_19" @default.
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