上海航天
上海航天
상해항천
AEROSPACE SHANGHAI
2011年
4期
57-61
,共5页
李鹏%张崇峰%陈宝东%柏合民%秦彦%来霄毅
李鵬%張崇峰%陳寶東%柏閤民%秦彥%來霄毅
리붕%장숭봉%진보동%백합민%진언%래소의
热模型修正%稳态数据%热平衡试验%对接机构
熱模型脩正%穩態數據%熱平衡試驗%對接機構
열모형수정%은태수거%열평형시험%대접궤구
Thermal model correction%Steady data%Thermal balance test%Docking mechanism
根据热平衡试验数据与计算结果的比较,分析两者存在差异的原因,用热平衡试验稳态工况数据修正对接机构热模型中的单元划分和热网络方程。研究了对热网络方程修正的方法,基于参数化和节点群概念改进参数化节点群整合方法,以明显减少需修正系数的数量,并与分级修正和局部修正综合,提高热网络修正方法的实用性。算例表明:通过热模型修正使温度计算值与试验值的偏差达到允许的要求,表明该热模型修正方法有效。
根據熱平衡試驗數據與計算結果的比較,分析兩者存在差異的原因,用熱平衡試驗穩態工況數據脩正對接機構熱模型中的單元劃分和熱網絡方程。研究瞭對熱網絡方程脩正的方法,基于參數化和節點群概唸改進參數化節點群整閤方法,以明顯減少需脩正繫數的數量,併與分級脩正和跼部脩正綜閤,提高熱網絡脩正方法的實用性。算例錶明:通過熱模型脩正使溫度計算值與試驗值的偏差達到允許的要求,錶明該熱模型脩正方法有效。
근거열평형시험수거여계산결과적비교,분석량자존재차이적원인,용열평형시험은태공황수거수정대접궤구열모형중적단원화분화열망락방정。연구료대열망락방정수정적방법,기우삼수화화절점군개념개진삼수화절점군정합방법,이명현감소수수정계수적수량,병여분급수정화국부수정종합,제고열망락수정방법적실용성。산례표명:통과열모형수정사온도계산치여시험치적편차체도윤허적요구,표명해열모형수정방법유효。
The reasons for temperature difference were analyzed according to the comparison between thermal balance test data and calculation results in this paper. Corrections on element division and thermal network equation in thermal model of docking mechanism were made using steady data in thermal balance test. The investigation of the correction method for thermal network equation was emphasized on. Parametric node group combined method was presented according to the concepts of parametrization and node group, which could greatly decrease the number of coefficients that need to be corrected. The practicability of such method could be enhanced combining with the classificatory correction technique and partial correction technique. The temperature difference between the thermal balance test data and calculation results with corrected thermal model was in the accepted range, which proved the validity of parametric node group combined method.