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Time-delay of message-transmission in the network is one of the main causes for bad control performance in multi-processor networked control system (NCS). Improved mixed traffic scheduler can shorten deadline of message-transmission and cut much time-delay by increasing number 1 of sampling. In the meantime, feedback scheduling control model for NCS can schedule instantly message-transmission and...
The conventional PID control can not receive satisfactory results to liquid level systems, because time delay always exists in these systems. Therefore, a kind of self-adaptive fuzzy Smith control is constructed by combining the merits of Smith predictor and fuzzy PID control, and applied to liquid level systems. The simulation results show that the proposed method can work satisfactorily.
An new model-free adaptive controller (MFAC) is proposed, combining the single output TD (tracking differentiator) with the basic MFAC. The novel TD-MFAC method improves the capacity of anti-jamming because of the filter characteristic of the single output tracking differentiator. Furthermore, TD-MFAC method is compared with PID control method. The simulation results show the model-free adaptive control...
In this paper a novel multipriority reservation protocols for plastic optical fiber network is proposed. In conventional OCDMA system only allows finite units to transmit and access simultaneously according to the number of channels which be restricted by BER. To resolve this problem, a novel protocol based on slotted ALOHA is proposed in this paper. By using the reservation scheme and a distributed...
This paper has discussed observer-compensator control scheme of time-delay system, and pointed out that this scheme was some sensitive to gain variation of object. It proposed a kind of self-tuning OC (STOC) control scheme. Theoretical analysis and simulation results showed that STOC control scheme had a greater robustness and control quality more than OC control scheme; especially STOC control scheme...
This paper addresses the problem of adaptive fuzzy integral sliding mode control (AFISMC) for uncertain nonlinear systems with state and input delays. First, we employ a state-transformation to map the nonlinear system into an input-delay free system. Then, an adaptive fuzzy technique is applied to estimate the bound of the lumped perturbation. Finally, based on Lyapunov stability theorem, a controller...
Artificial reverberator is now widely used in broadcasting station, television station, singing and dancing hall, etc. It plays an important role in beautifying music, sugaring singing, glorifying phonetic timbre and the artistic re-creation. It can also produce many kinds of special acoustics. However, artificial reverberator is a very complex system related with many important items especially its...
A new stability criterion based on numerical computing and simulation for nonlinear time-invariant systems is presented. It provides a standard and simple way to construct the energy-like function. The relevant proof has been given to justify this stability criterion. In the environment of MATLAB, this method is successfully applied on a practical industrial process control system with time-delay...
At present, controller design of industrial processes with long time-delay is still a difficult problem. Furthermore, the time-varying and nonlinear features, which enhance the difficulties, are often encountered in the processes. According to analyzing the characteristic of a human-simulated intelligent controller (HSIC), the schema of the HSIC is proposed to deal with the processes of long time-delay,...
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