Development and Test of Low Vibration Cryocooler Electronics
Closed system linear piston cryocoolers are becoming relied upon to provide reliable, continuous and efficient, low vibration cryogenic cooling for infrared focal plane arrays and optics. A brief synopsis of a Low Vibration Cryocooler Drive Electronics (CDE) from Rockwell is presented along with results of vibration cancellation on two opposed British Aerospace (BAe) 80K coolers. Discussions center on the measured performance of different approaches taken for mitigating vibration. The drive electronics systems performance has met requirements with vibration reductions of over 200:1, achieving less than 0.2 N axial and 0.4 N off axis force (Figure 4 & 6) for a 40W dual compressor drive.
KeywordsVibration Control Vibration Force Vibration Suppression Drive Frequency Axial Vibration
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- 1.Sutton T.J., Elliott S.J., “Application of Frequency-Domain Neural Networks to the Active Control of Harmonic Vibrations in Nonlinear Structural Systems”, Proceedings of the IEEE-SP (Neural Networks for Signal Processing II), Cat. No. 92TH0430-9, IEEE, N.Y. (1992), p.474-83.Google Scholar
- 2.Fan H., Vemuri R., “Robust Adaptive Algorithms for Active Noise and Vibration Control”, Proceedings of the ICASSP (International Conference on Acoustics Speech and Signal Processing). Cat. No. 90CH2847-2, IEEE, N.Y. (1990), p. 1137-40.Google Scholar
- 3.Ross R.G. Jr., Johnson. D.L., Kotsubo V.Y., “BAe 80K Stirling Cooler Performance Characterization”, (Unpublished), Thermal & Cryogenics Tech. Group, JPL, May 1992.Google Scholar