This paper studied the performance of networked control systems (NCSs) with coding and quantization constraints. In the forward channel of NCSs, the effects of noise and coding–decoding under a two-degree of freedom controller (2DOF) are considered, while in the feedback channel, the effects of quantization and bandwidth are taken into account. The performance expression is achieved by the spectral factorization. From the results, it can be concluded that the performance is determined by the given plant construction (non minimum phase (NMP) zeros, unstable poles), characteristics of the channel parameters. At the same time, the additive white Gaussian noise (AWGN), coding–decoding, quantization, bandwidth and other factors in the communication path also affect the performance of the network communication path. Finally, the effectiveness and merits of the proposed control scheme are verified by simulations.

本文研究了具有编码和量化约束的网络控制系统（NCS）的性能。在NCS的前向信道中，考虑了噪声和两自由度控制器（2DOF）下的编解码的影响，而在反馈信道中，考虑了量化和带宽的影响。性能表达是通过频谱分解实现的。从结果可以得出结论，性能取决于给定的工厂结构（非最小相位（NMP）零，不稳定的极点），通道参数的特性。同时，通信路径中的加性高斯白噪声（AWGN），编解码，量化，带宽和其他因素也会影响网络通信路径的性能。最后，