Concerning existing network-induced delay based on the networked control system,the control algorithm design of network-induced delay is put forward,through the simulation experiment of network factors to the NCS of AUV guidance system,use compensate observation and the effective control algorithm weakens to the control system stable influence.
Through simulation in network delay circumstance with the the global asymptotically stable controller based on Lyapunov theory, the effect of network-induced delay on the mobile robot control system is analyzed.
Error function resulting from Network-Induced Delay is presented and the Networked Control System (NCS) model is established based on CAN Bus. Simulation and analysis are made respectively under different situation of delay.
Fuzzy adaptive controller that can adjust the system parameters appropriately is designed to minimize the error caused by Network-Induced Delay. Simulation is realized of this controller in NCS. Experiments are carried on the Servo-System based on Field Bus.
Under the known model of the controlled object, the fuzzy controller is used as inter-model part of Smith control and the Smith pre-estimation part is integrated with the controlled object, which reduces the transformation of redundant information and compensates the network-induced delay.
Facing problems led by the internet network, such as time-delay, data safety, the research of internet-based teleoperation is a challenged one because of the network latency, and the operation ability of bilateral teleoperation is affected, even to the system stability.
On the basis of measurement and analysis on network time delay,this paper modifies the structure of traditional networked control system and presents a time-delay compensation method based on dividing time intervals.
To begin with, Feasibility of networked test with Ethernet is demonstrated by modeling of CSMA/CD protocol of standard Ethernet and analysis of Ethernet performance, especially for network time delay and real time test experiment. And analyses the problems of networked test with Ethernet and proposes the solution.
In this paper , based on the analysis of the main composition of the Internet time delay and its characteristics, the network time delay test and its conclusion are presented . Finally, the validity of the network time delay prediction algorithm is discussed .
Simulation results show that the proposed method can recover the packet losses more efficiently than RS codes over different decoding delay conditions and thus suits for different packet network delay conditions.
Analysis of PROFIBUS-DP network delay and its influence on the performance of control systems
This paper analyzes PROFIBUS-DP network delay in detail and presents the calculational formula of its maximum time-delay, which is significant to the research of PROFIBUS-DP.
Second, we present a new adaptive delay adjustment algorithm that tracks the network delay of recently received packets and efficiently maintains delay percentile information.
The essence of the proposed scheme is to dynamically enforce equalized delays to incoming media streams, in order to piece-wise smooth the network delay variations and to synchronize the streams at the sink.
Results from simulations and experiments show that the proposed compiler-directed method can reduce energy consumption of interconnection networks by 20～70%, at a loss of less than 1% network latency and performance degradation.
Primary challenges that have to be addressed by these systems are maintaining systemwide data consistency, enabling fair resource sharing and interaction between users, and compensating network latency jitters.
You will find that mobile agents reduce network traffic and provide an effective means of overcoming network latency.
Replica placement algorithms are based on heuristics that consider both network latency and user requests to select the best candidate sites to place replicas.
This architecture reduces network latency and increases resource utilization at the client.