Abstract Cryocoolers can experience near-periodic heaving or side-to-side motion and acceleration in some applications, in particular on moving platforms. In this work, the effect of heaving and rolling (side-to-side movement) on a Stirling pulse tube cryocooler was experimentally studied. Periodic heaving and rolling motions with various amplitudes, and frequencies in the 0.2 to 0.8 Hz range were imposed on a test section using a motion platform. The test section represented a prototypical commercial pulse tube cryocooler (PTC). The PTC was tested at two different neutral positions, vertical with the cold end pointing down (ideal orientation) and vertical with the cold end pointing up (inverted). When the PTC was at vertical position with the cold end pointing down, heaving movement had no measurable influence on its performance. Furthermore, the rolling motion caused some fluctuation but less than 2% drop in the cooling power of the tested PTC. When the PTC was at inverted, upside-down position, it showed significantly more sensitivity to periodic motions. Heaving motion and rolling motion resulted in approximately 5% and 10% maximum drops in the cooling power, respectively. Rolling motion also caused larger fluctuation in cooling power, with amplitudes about 15% of the average cooling power. Increasing the frequency and the amplitude of the motions both had notable negative effects on the performance of the PTC.

中文翻译：

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周期性的左右和起伏运动对斯特林脉冲管低温冷却器性能的影响

摘要 在某些应用中，特别是在移动平台上，低温冷却器可能会经历近乎周期性的起伏或左右运动和加速度。在这项工作中，通过实验研究了起伏和滚动（左右运动）对斯特林脉冲管低温冷却器的影响。使用运动平台在测试段上施加具有各种幅度和频率在 0.2 至 0.8 Hz 范围内的周期性起伏运动。测试部分代表了一个典型的商用脉冲管低温冷却器 (PTC)。PTC 在两个不同的中间位置进行测试，垂直冷端朝下（理想方向）和垂直冷端朝上（倒置）。当 PTC 处于垂直位置且冷端朝下时，垂荡运动对其性能没有可测量的影响。此外，滚动运动引起了一些波动，但被测 PTC 的冷却能力下降不到 2%。当 PTC 处于倒置、倒置位置时，它对周期性运动表现出明显更高的敏感性。垂荡运动和滚动运动分别导致冷却功率最大下降约 5% 和 10%。滚动运动也引起冷却功率的较大波动，幅度约为平均冷却功率的 15%。增加运动的频率和幅度都会对 PTC 的性能产生显着的负面影响。垂荡运动和滚动运动分别导致冷却功率最大下降约 5% 和 10%。滚动运动也引起冷却功率的较大波动，幅度约为平均冷却功率的 15%。增加运动的频率和幅度都会对 PTC 的性能产生显着的负面影响。垂荡运动和滚动运动分别导致冷却功率最大下降约 5% 和 10%。滚动运动也引起冷却功率的较大波动，幅度约为平均冷却功率的 15%。增加运动的频率和幅度都会对 PTC 的性能产生显着的负面影响。