Performance Analysis of NCSs Under Channel Noise and Bandwidth Constraints

Abstract

This paper investigates the performance limitation of multi-input multi-output (MIMO) networked control systems (NCSs). The communication channel is modeled as a power constrained channel with channel noise and the bandwidth constraints. The optimal performance index of the system is expressed by the covariance of the reference input signal and the system output error signal. Some new results about MIMO NCSs are obtained by co-prime factorization, inner-outer factorization and spectral decomposition techniques. The results demonstrate that the tracking performance depends on the non-minimum phase zeros, unstable poles and their directions. At the same time, the network communication parameters constraints, energy constraints and the essential feature of reference input signal also restrict the performance. Some illustrative examples are presented to demonstrate the feasibility of the proposed methods. INDEX TERMS Bandwidth constrains, channel noise, communication channels, performance limitation.

Fixed-Time Bipartite Containment of Multi-Agent Systems Subject to Disturbance

“…Future works will be on the bipartite containment in the hybrid cases such as with switching topology or with impulse [44], [45]. (ϕ v ⊗ I )) −1 ) e(t) 2 2 .…”

“…Example 1 (First-Order Systems): In this example, the control law (5) is utilized to explain fixed-time bipartite containment for the system (1) and (2) Additionally, w i = 2arccos(1.5t), i = 1, 2, . .…”

Two‐stage recursive identification algorithms for a class of nonlinear time series models with colored noise

“…The simulation results indicate that the proposed 2S-LS-MIESG algorithm can effectively deal with the parameter estimation for the TA B L E 3 The 2S-LS-MIESG parameter estimates and errors (p = 3, 2 = 0.40 2 ) t ExpARMA model and has improved parameter estimation accuracy. The methods in this article can be applied to system modeling [71][72][73][74] and other fields such as information processing [75][76][77][78][79] and communication systems and so on.…”

Analysis of optimal performance of MIMO networked control systems with encoding and packet dropout constraints

“…The tracking error performance of the NCSs with a random reference noise under the AWGN, encoder‐decoder, and bandwidth was studied in [37]. A new modified tracking error index of the multi‐input multi‐output (MIMO) NCSs with the bandwidth and channel noise constraints was investigated in [38, 39]. The tracking error of the discrete‐time MIMO NCSs in terms of the SNR was investigated in [40].…”