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中文摘要：
本文基于白噪声和编码影响研究多通道网络化系统跟踪性能极限.网络化系统的跟踪性能指标是通过跟踪误差的能量来定义的,采用谱分解技术和范数矩阵理论得到多通道网络化系统跟踪性能极限的下界表达式.研究结果显示了对象的固有特性（非最小相位零点、零点方向、不稳定极点和极点方向）和多通道的编码器及白噪声决定网络化系统跟踪性能极限;同时也说明了多通道网络是如何影响系统跟踪性能极限.仿真结果验证了该结论的正确性.
英文摘要：
The performance limitation for multi-channel networked system with white noise and coding constraints is studied.The tracking performance is measured by the energy of the tracking error.The tracking performance limitation of multi-channel networked system is obtained by applying spectral factorization technique and norm matrix theory.It is shown that the performance limitation for a multi-channel networked system is depending on the intrinsic properties of a given plant such as nonminimum phase zeros,zero direction,unstable poles,pole direction,code and white noise.The result also shows how the multi-channel network may fundamentally constrain the tracking capability of a control system. A typical example is given to illustrate the theoretical results.
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