The H∞loop-shaping design method is applied to the attitude control of the satellite with low damping mode in this paper. The controller is designed and the simulation result shows that the closed-loop system has poor robustness.
本文将H∞回路成形设计方法应用于具有弱阻尼模态的卫星姿态控制系统设计中,设计出了控制器并对闭环系统进行了仿真分析,仿真结果表明,用H∞回路成形设计方法设计出的控制器鲁棒性较差,为此,论文中采用μ综合与回路成形相结合的方法设计控制器,仿真结果表明,用这种方法设计的控制器可以达到很好的控制效果。
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It is indicated that the low damping mode can augment the norm of the coprime factor perturbation and as a result the domain of the actual admissible perturbation is reduced.
论文中给出了控制器之所以会失去鲁棒性，是因为弱阻尼模态增大了互质因子摄动的范数，从而缩小了模型的实际允许摄动范围。
In this paper, the contribution of high order mode shape to the frequency response function of disproportional damping structure is expressed by using low order mode shape and system matrix.
本文用低阶模态和系统矩阵表达高阶模态对非比例阻尼结构频响函数的贡献。
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