基于XGBoost的空间高温材料实验炉控制系统建模  

Modeling of Temperature Control System of Space Experiment High-temperature Furnace Based on XGBoost

作　　者：任俊竹 肖志刚 于强 REN Junzhu;XIAO Zhigang;YU Qiang(National Space Science Center,Chinese Academy of Sciences,Beijing 100190;University of Chinese Academy of Sciences,Beijing 100049)

机构地区：[1]中国科学院国家空间科学中心,北京100190 [2]中国科学院大学,北京100049

出　　处：《空间科学学报》2023年第4期703-710,共8页Chinese Journal of Space Science

基　　金：中国科学院空间科学先导专项科学卫星任务运控技术项目资助(XDA15040100)。

摘　　要：为确保高温材料科学实验柜科学实验系统能够成功地进行空间材料科学实验,在空间进行高温材料科学实验的时候要求其温度稳定在±0.25℃范围内。面对如此之高的温度稳定度要求,提出一个新的解决方案:在实验输入和输出数据的基础上,确定一个与高温炉控制系统内部等价的模型,为获得满足实验要求的控制参数提供依据。本文将高温炉控制系统内部看作黑箱模型,基于XGBoost方法分别对四类样品实验的高温炉内部温区2和温区3进行建模,模型精确度全部可达到99.98%以上。与传统建模方式传递函数相对比,在传统方法表现最好的情况下,模型精度仍提高了3.8%,为获得控制参数以确保空间实验温度实现高稳定度提供了重要支持。With the development of China’s space industry,the construction of China’s space station has been completed in 2022.In the future,China will carry out a series of space material science experiments in space.The high-temperature furnace in the high-temperature material science experimental rack,as the main equipment of the space material science experiment,requires the high-temperature furnace’s temperature to be stable within±0.25℃when conducting the high temperature material science experiment in space.In the face of such high temperature stability requirements,in order to ensure that the scientific experimental system of the high-temperature material science rack can successfully conduct the space material science experiment,it is necessary to first establish the mathematical model of the high-temperature furnace control system.Because the object of high-temperature furnace is a kind of nonlinear and time-delay complex control object,it is difficult to model based on mechanism.To solve this problem,this paper proposes a new solution:based on the experimental input and output data,an intelligent modeling method is adopted to determine an internal equivalent model of the high-temperature furnace control system,which provides a basis for obtaining control parameters that meet the experimental requirements.In this paper,the control system of high-temperature furnace is regarded as a black box model,and four representative sample experimental data are selected.Based on XGBoost method,the mathematical models of temperature zone 2 and temperature zone 3 control system of high-temperature furnace are established respectively.The accuracy of the models can all reach more than 99.98%.Compared with the traditional modeling method,the transfer function is used as the basic model for parameter estimation,and the modeling effect varies according to different samples.In addition,under the best performance of traditional methods,the accuracy of the model based on XGBoost is still improved by 3.8%.The experimental resu

关 键 词：XGBoost 传递函数 系统辨识 高温炉控制系统 

分 类 号：TP3[自动化与计算机技术—计算机科学与技术]