带宽约束及高斯白噪声影响下的网络控制系统的最优跟踪性能
首发时间:2012-12-24
摘要:本文针对线性时不变网络控制系统的随机信号跟踪性能极限问题进行了研究。对上行通道和下行通道都存在通信带宽约束及高斯白噪声影响的情形,通过采用双自由度控制器,获得了此类网络控制系统的最优可达的跟踪性能。研究结果表明网络控制系统的跟踪性能极限完全由被控对象的结构特征、参考输入信号、通信信道带宽和高斯白噪声的统计特征所决定。其中结构特征指被控对象的非最小相位零点、不稳定极点以及被控对象的系统增益。
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Optimal Tracking Performance of Networked Control Systems with Bandwidth Constraint and Additive White Gaussian Noise
Abstract:In this paper, the tracking performance limitations of linear time-invariant networked control systems (NCSs) for random reference signal is invertigated. For the cases of up-link and down-link channel with limited bandwidth and additive white Gaussian noise (AWGN) effect, two-parameter controllers are adopted and the optimal tracking performance for NCSs is obtained. The results show that the optimal tracking performance depends on structural characteristics of the plant, including the non-minimum phase zeros, unstable poles and gain at all frequencies of the given plant, and reference input signal, communication bandwith and the statistical characteristics of AWGN.
Keywords: networked control systems additive white Gaussian noise tracking performance
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带宽约束及高斯白噪声影响下的网络控制系统的最优跟踪性能
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