COMPARATIVE ANALYSIS OF AMPLITUDE-FREQUENCY CHARACTERISTICS OF VIBRATIONS OF ROTORY-TYPE MICRO-CRYOGENIC MACHINES
P. P. Dobrovolsky, I. I. Kremis, V. N. Fedorinin, V. I. Sidorov
Technological Design Institute of Applied Microelectronics, Novosibirsk, Russia
Keywords: micro-cryogenic machine, photodetector array
Abstract
The vibroactivity of micro-cryogenic machines is an important factor determining the resource characteristics of photodetector arrays (PDAs) operating in the IR range. The article describes the amplitude-frequency characteristics of the vibration activity of PDAs with different service lives produced by different manufacturers. The vibroactivity is measured by a strain sensor rigidly connected with the PDA base. The influence of centrifugal and compression forces on the PDA vibroactivity and the possibility of their mutual compensation are analyzed.
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