论文标题
从无低温低温恒温器中的脉冲管冷冻器中的温度振荡的主动抑制：第1部分。来自热响应特征的模拟建模
Active suppression of temperature oscillation from a pulse-tube cryocooler in a cryogen-free cryostat: Part 1. Simulation modeling from thermal response characteristics
论文作者
论文摘要
使用4 K商业GM或脉冲管冷冻冷冻机（PTC）冷却的无冷冻仪表板显示由再生冷冻冷却器的固有工作原理引起的温度振荡。为了抑制这种振荡，通常需要大量的热容量或较大的热阻力。为了更好地理解这一现象并更有效地抑制它，Ceryostat的步骤响应特征和内在振荡特征都已用于获得模拟模型的完整传递函数。后者用于测试和优化传统的PID反馈控制。结果表明，这种方法几乎对温度振荡振幅没有影响。基于此模拟模型，提出了一种新型的活动方法，并通过数值测试。仿真结果预测该方法应抑制原始温度振荡的幅度两个。
A cryogen-free cryostat cooled using a 4 K commercial GM or pulse tube cryocooler (PTC) displays temperature oscillations caused by the intrinsic working principle of the regenerative cryocooler. To dampen such oscillations usually requires either a large heat capacity or a large thermal resistance. To understand this phenomenon better and suppress it more effectively, both the step response characteristic and the intrinsic oscillation characteristic of cryostat have been used to obtain the complete transfer functions of a simulation model. The latter is used to test and optimize traditional PID feedback control. The results showed this approach has almost no effect on the temperature oscillation amplitude. Based on this simulation model, a novel active method was proposed and tested numerically. Simulation results predict the method should suppress the amplitude of the original temperature oscillation by a factor of two.
