Optimized precision temperature control method and experimental validation for non-uniform discontinuous X-ray telescope
In this paper,we aim to realize the precision temperature control of EP satellite X-ray tele-scope.By establishing the mathematical heat transfer model of Wolter-I swept-incidence X-ray telescope,heat transfer law in the focusing mirror group is revealed,and two types of active temperature control heat-ers are designed.In view of the difficulty in regulating the thermal field caused by the non-uniform and dis-continuous configuration of the telescope,an optimized precision temperature control method was pro-posed,taking into account the temperature control index and the difficulty of process development,and a cost function was constructed on how to partition and deploy the heat compensation.By setting the weight-ing parameters of average deviation,maximum deviation,number of zones and minimum zone length,the optimal design of the first type of heater was obtained.The whole-satellite vacuum test results show that:the temperature range of 54 lenses is 19.1～20.9℃,and the time domain temperature stability is good,the fluctuation is less than 0.2℃,which meets the index requirement of(20±1)℃for X-ray telescope,and the weighting parameters are reasonably designed.The method proposed in this study successfully copes with the problem of precision temperature control for non-uniform and discontinuous X-ray tele-scopes,and provides technical support for space science detectors with high temperature requirements.
precision temperature controloptimizationX-raynon-uniform discontinuitiesEP satellite
万方数据
维普
