结合预估器的航天器热循环系统控制策略  

Control Strategy of Spacecraft Thermal Cycle System Combined with Predictor

作　　者：程睿杰 黄一也 蔡爱峰 吴静怡[1] CHENG Ruijie;HUANG Yiye;CAI Aifeng;WU Jingyi*(Institute of Refrigeration and Cryogenics Shanghai Jiao Tong University,Shanghai 200240,China)

机构地区：[1]上海交通大学制冷与低温工程研究所,上海200240

出　　处：《制冷技术》2023年第4期1-6,13,共7页Chinese Journal of Refrigeration Technology

基　　金：上海航天科技创新基金(No.SAST2019-066)。

摘　　要：传统的比例积分微分(PID)控制方法由于对被控对象的实际能力评估不足,在航天器热循环实验系统中的控制精度不高。为了解决这一问题,本文提出了一种结合预估器的航天器热循环系统控制策略。在传统PID控制的基础上,通过添加预估器来对PID参数进行预先估计,从而缩减调节时间。本文通过仿真研究对比了传统PID控制策略与改进的PID控制策略,结果表明:该改进方法使系统滞后性降低了18%~31%,同时在系统温度均匀性上改善了14.8%。The traditional proportional integral derivative(PID)control method has low control accuracy in the spacecraft thermal cycle test system due to insufficient evaluation of the actual capability of the controlled object.To solve this problem,this paper proposes a control strategy of spacecraft thermal cycle system combined with predictor.Based on traditional PID control,the PID parameters are pre-estimated by adding a predictor,thereby reducing the adjustment time.In this paper,the traditional PID control strategy and the improved PID control strategy are compared through simulation research.The results showed that the improved method proposed in this paper reduced the system lag by 18%to 31%,and improved the system temperature uniformity by 14.8%.

关 键 词：热循环实验 预测 改进比例积分微分 

分 类 号：TB611[一般工业技术—制冷工程] TK124[动力工程及工程热物理—工程热物理]