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When hidden Markov models (HMMs, including discrete HMM and semi-continuous HMM) are used to model and predict the random delays in networked control systems, there are five parameters needed to be estimated. They are the number of different network states, the initial distribution of the network states, the state transition matrix of the hidden Markov chain formed by the network states, the number...
In order to achieve the application of discrete-time hidden Markov model (DTHMM) in modeling and controlling the networked control system (NCS) with the network-induced delays in the forward channel, a simulation platform was designed and implemented in this paper by using TrueTime 1.5, which is a Matlab/Simulink-based simulator. There were one network module and four kernel modules (sensor, controller,...
This paper discusses the technical structure and utilization of remote supervisory control system. And the novel dual-parallel coupled inverted pendulum platform is constructed. Client-Server architecture is developed with the network communication for closed-loop control. The application allows performing a number of laboratory scale hard real-time control experiments, which can be remotely monitored...
The issue of asymptotical stability for MIMO continuous-time networked control systems (NCSs) based on multi-packet transmission is researched, where its network transmission is connected with multi-delays. The complete mathematical model of the NCSs is derived. The criteria of delay-dependent asymptotical stability for systems are given. And the sufficient condition for asymptotical stability is...
The issue of stability analysis for nonlinear MIMO networked control systems (NCSs) is researched, where its network transmission is connected with network-induced delay and packet dropout. The effect of network-induced delay to the stability of nonlinear networked control system s is considered. Asymptotical stability under a multiple-packet transmission policy is analyzed and the maximum allowable...
For the stability analysis of the networked control system (NCS) with random network-induced delays, which were considered to be governed by an underlying Markov chain with unknown probability distribution, the hidden Markov model (HMM) theory was proposed to model this kind of NCS as a jump linear system, wherein the output feedback controller was adopted. By using Baum-Welch algorithm, the parameters...
The problem of data dropout and transmission delays induced by communication channel in networked control systems (NCSs) was investigated in this paper, where output feedback control law was employed. These delays and data dropout might deteriorate the system performance and even cause the system instability. To guarantee the stability of such NCSs, we proposed a new method to model the networked...
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