A novel Sigma-Delta ADC application oriented to test hermetic reciprocating compressors

摘要

A novel data acquisition approach to test hermetic reciprocating compressors is presented. A non-uniformly sampled application of a ∑△ analogue-to-digital converter was used to investigate the compressor pV diagram, together with accurate spectral analysis of pressure readings. Several previous approaches are presented and compared with the one proposed here. Different statistical comparisons have been carried out with the main objective of demonstrating the good performance of the proposal.