By making use of the correlation technique of pseudorandom signal,the on line identification of moving damping of displacer in a split cycle Stirling cryocooler has been carried out in this paper.

• 依据伪随机相关分析方法对分置式斯特林制冷机排出器的运动阻尼进行了在线辨识，提出了经过优化的辨识实验方案。