Dual stroke and phase control and system identification of linear compressor of a split-stirling cryocooler

A new dual control scheme is proposed to the stroke and phase compensation on the displacement of linear compressor of a split-Stirling cryocooler. This dual controller has two connected stroke and phase control loops, whose dynamic models are identified experimentally. These loops individually provide corrections on the stroke and phase of the compressor displacement to follow a sinusoidal command. The experimental results show that the dual stroke and phase control system is robust to parameter changes and external disturbances.