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首页> 外文期刊>Journal of Spacecraft Technology >Design and Development of CDEU (Cryo Drive Electronics Unit) For Pulse Tube Cryocoolers
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Design and Development of CDEU (Cryo Drive Electronics Unit) For Pulse Tube Cryocoolers

机译：CDEU（Cryo Drive Electronics单元）用于脉冲管冷冻机的设计与开发

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Cryo-cooler Drive Electronics Unit (CDEU) developed at Payload Data Management Group of URSC is used to drive Pulse Tube Cryo-cooler (PTC). CDEU is first of its type to have on-board sinusoidal drive in Indian space programme. PTCs developed by Thermal System Group are active type of coolers, used to bring the temperature to cryogenic levels, in the range of 50 K - 80 K range employing a single stage with heat handling capacity from 50mW up to 1W. CDEU generates a sinusoidal drive to the PTC compressors in Synchronous manner. In order to achieve higher efficiency, the drive is designed using digital techniques. Precision instrumentation circuitry is designed to measure PTC parameters like cryo temperature, pressure and other drive parameters of CDEU. To interface with spacecraft CDEU employs MIL-STD-1553B interface bus. As part of safety logics soft start, current overload check and launch lock of compressor coil are implemented. This paper provides details of CDEU Flight model realization, and its performance against derived specifications. The flight model has undergone qualification test and was flown along with PTC in GSAT-29. Test were carried out during post launch to assess the performance in microgravity environment. The paper also provides details of on-orbit performance results and ends with future scope of work.
机译：在URSC的有效载荷数据管理组中开发的冷冻冷却器驱动电子单元（CDEU）用于驱动脉冲管冷冻机（PTC）。 Cdeu首先是在印度空间计划中拥有板上的正弦驱动。由热系统组开发的PTC是有源型冷却器，用于将温度降至低温水平，在50 k - 80 k范围内，采用单级，热处理容量为50mW至1W。 CDEU以同步方式为PTC压缩机产生正弦驱动。为了实现更高的效率，驱动器设计使用数字技术。精密仪表电路旨在测量CDEU的Cryo温度，压力和其他驱动参数等PTC参数。与航天器CDEU接口采用MIL-STD-1553B接口总线。作为安全逻辑的一部分软启动，电流过载检查和压缩机线圈的发射锁定是实现的。本文提供了Cdeu飞行模型实现的详细信息，以及对衍生规范的性能。飞行模型经历了资格测试，并与GSAT-29中的PTC一起飞行。在发布后进行测试，以评估微匍匐环境中的性能。本文还提供了轨道绩效结果的详细信息，并以未来的工作范围结束。

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