卫星姿控系统可重构性综合评价方法研究

针对可重构性评价需考虑系统资源、性能等多约束条件的问题，以卫星混合执行机构姿控系统为研究对象，建立了基于组合赋权法的卫星可重构性综合评价方法。首先，综合分析影响卫星姿控系统的指标因素，结合系统可重构性度量指标构建了综合评价指标体系；然后利用层次分析法和熵权法分别得到权重初值，以最小二乘法为工具建立确定具有主客观意义的优化组合评价权重；最后采用欧几里德距离为测度，计算各方案距离正负理想点的相对接近度并以此作为评价准则。针对多方案系统配置实例进行了验证计算，结果表明利用基于组合赋权法的评价方法能有效地对卫星姿态控制系统可重构性进行综合评估，具有较好的应用价值。

Reconfigurability Comprehensive Evaluation for Satellite Attitude Control System

In this paper, a comprehensive reconfigurability evaluation model of satellite with hybrid actuators is established based on integrated weight method considering the system resources and some capability constraints in the satellite attitude control systems (SACS). Firstly, the evaluation factor indicators including system reconfigurability indicator are established by using synthetic analysis of the different impact factors of SACS. Dimensionless indicator matrix is further obtained by quantization processing of reconfigurability indicator set. The initial target weights are determined by use of AHP method and entropy weight method simultaneously, and the target weights with the subjective and objective significance can then be derived by use of the least-square optimization method. Finally, evaluation criterion is obtained by using Euclidean distance as a measure, which is used to calculate approximation degree of each scheme to positive and negative ideal scheme. In addition, a practical case of various SACS schemes is performed to validate the efficiency of the proposed method for SACS reconfigurability assessment.