Finally, EI input shaper is designed for the closed loop system whose frequency and damp has uncertain characteristic to reduce the vibration.

最后针对该系统由于非线性环节的引入导致的闭环频率和阻尼不确定的特点，设计了鲁棒ei输入成型器来抑制挠性结构的振动。

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In this paper, EI and FAB-MS of tri and tetra-O-acetyl C-glucosides and C-galactosides were reported. Some characteristic fragmentation patterns of O-acetyl C-glycosides were discussed.

本文报道了四—O—乙酰基和三—O—乙酰基匍萄糖及半乳糖碳苷的电子轰击质谱和快原子轰击质谱，总结出一些乙酰基碳苷特有的裂解规律。

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