Improving dynamic token-based distributed synchronization performance via optimistic broadcasting

1998 ◽  
pp. 118-131
Author(s):  
Alexander I-Chi Lai ◽  
Chin-Laung Lei
Keyword(s):  
Distributed Synchronization ◽  
Synchronization Performance

scholarly journals Distributed synchronization of autonomous underwater vehicles with memorized protocol

2019 ◽  
Vol 16 (2) ◽  
pp. 172988141984414 ◽  
Author(s):  
Chao Ma ◽  
Wei Wu
Keyword(s):  
Model Transformation ◽  
Autonomous Underwater Vehicles ◽  
Theoretical Method ◽  
Underwater Vehicles ◽  
Functional Method ◽  
Synchronization Problem ◽  
Distributed Synchronization ◽  
Simulation Results ◽  
Synchronization Performance ◽  
Synchronization Protocol

This article investigates the distributed synchronization problem of autonomous underwater vehicles by developing a novel synchronization protocol with memorized controller. More precisely, the memory information for information exchanges of autonomous underwater vehicles is utilized such that the synchronization performance can be improved. By employing the Lyapunov–Krasovskii functional method with model transformation, sufficient criteria are established for guaranteeing the synchronization, and the corresponding distributed synchronization controllers are designed based on matrix techniques. Finally, the effectiveness and benefits of our theoretical method are supported by an illustrative example with simulation results.

Synchronization Performance for OFDM-Based FM Systems Using Cyclic Delay Diversity

2010 ◽  
Vol E93-B (5) ◽  
pp. 1338-1341 ◽  
Author(s):  
Won-Jae SHIN ◽  
Young-Hwan YOU
Keyword(s):  
Cyclic Delay Diversity ◽  
Delay Diversity ◽  
Synchronization Performance

Impulsive Effects Based Distributed Synchronization of Heterogeneous Coupled Neural Networks

2020 ◽  
pp. 1-1
Author(s):  
Ze Tang ◽  
Deli Xuan ◽  
Ju H. Park ◽  
Yan Wang ◽  
Jianwen Feng
Keyword(s):  
Neural Networks ◽  
Impulsive Effects ◽  
Coupled Neural Networks ◽  
Distributed Synchronization

Fully Distributed Synchronization of Complex Networks With Adaptive Coupling Strengths

2021 ◽  
pp. 1-13
Author(s):  
Qiang Song ◽  
Guanghui Wen ◽  
Wenwu Yu ◽  
Deyuan Meng ◽  
Wenlian Lu
Keyword(s):  
Complex Networks ◽  
Distributed Synchronization ◽  
Adaptive Coupling ◽  
Coupling Strengths

scholarly journals Cooperative synchronization control of intelligent lifting systems with actuator failures

2018 ◽  
Vol 10 (12) ◽  
pp. 168781401881349
Author(s):  
Lijing Dong
Keyword(s):  
Data Transfer ◽  
Synchronization Error ◽  
Synchronization Control ◽  
Wireless Data ◽  
Hydraulic Actuators ◽  
Actuator Failures ◽  
Distributed Controller ◽  
Transfer Unit ◽  
Distributed Synchronization ◽  
Lifting System

Synchronization of a large-scale lifting system with hydraulic actuator failures is investigated in this article. The lifting system is composed of multiple intelligent lifting subsystems with hydraulic actuators, wireless data transfer unit, and distributed controller. During the lifting process, the hydraulic actuators are possible to be malfunctioned. Once actuator failure occurs, the number of lifting points and the communication topology would change over different time intervals. This article proposes a distributed synchronization control method and adopts switching technique in analyzing the lifting synchronization. The distributed controller is designed with information received from around subsystems through wireless data transfer unit rather than with direct reference signal from the control station. On the basis of Lyapunov stability theory and switched technique, sufficient conditions that guarantee the synchronization of the lifting system with actuator failures are achieved, and synchronization errors can be reduced as small as desired. Finally, the effectiveness of proposed distributed synchronization controller is verified by numerical simulations conducted on AMESim platform. From the simulation results, it can be seen that when actuator failures occur, the synchronization error of the remaining lifting subsystems is less than 5%. The lifting synchronization error shrinks to 5% in 5.87 s when a broke-down subsystem returns to normal.

scholarly journals Spontaneous emergence of leadership patterns drives synchronization in complex human networks

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Carmela Calabrese ◽  
Maria Lombardi ◽  
Erik Bollt ◽  
Pietro De Lellis ◽  
Benoît G. Bardy ◽  
...  
Keyword(s):  
Motor Coordination ◽  
Research Effort ◽  
Motor Task ◽  
Arm Movement ◽  
Physical World ◽  
Physical Interaction ◽  
Digital World ◽  
Spatial Configurations ◽  
Human Networks ◽  
Synchronization Performance

AbstractSynchronization of human networks is fundamental in many aspects of human endeavour. Recently, much research effort has been spent on analyzing how motor coordination emerges in human groups (from rocking chairs to violin players) and how it is affected by coupling structure and strength. Here we uncover the spontaneous emergence of leadership (based on physical signaling during group interaction) as a crucial factor steering the occurrence of synchronization in complex human networks where individuals perform a joint motor task. In two experiments engaging participants in an arm movement synchronization task, in the physical world as well as in the digital world, we found that specific patterns of leadership emerged and increased synchronization performance. Precisely, three patterns were found, involving a subtle interaction between phase of the motion and amount of influence. Such patterns were independent of the presence or absence of physical interaction, and persisted across manipulated spatial configurations. Our results shed light on the mechanisms that drive coordination and leadership in human groups, and are consequential for the design of interactions with artificial agents, avatars or robots, where social roles can be determinant for a successful interaction.

Research and Application for Two-Cylinder Electro-Hydraulic Servo Synchronous Control Technology

2013 ◽  
Vol 344 ◽  
pp. 139-144
Author(s):  
Guo Jin Chen ◽  
Jing Ni ◽  
Ting Ting Liu ◽  
Ming Xu ◽  
Hui Peng Chen
Keyword(s):  
Digital Simulation ◽  
Response Speed ◽  
Drive System ◽  
Synchronous Control ◽  
Hydraulic Servo ◽  
Synchronous Drive ◽  
The Mathematical Model ◽  
Tracking Response ◽  
Control Accuracy ◽  
Synchronization Performance

The two-cylinder drive is one of many commonly used mechanical drive forms. Its synchronous control accuracy determines the movement accuracy of the working machinery. The paper established the mathematical model for the two-cylinder electro-hydraulic servo synchronous drive system, and revealed that the two-cylinder horizontal electro-hydraulic synchronous drive system has the cascade form of the linear system with the nonlinear system. Taking the band sawing machine and the broaching machine as the application object, the paper analyzed their compositions and synchronization CNC systems. Aiming at the dual-cylinder drive form for the broaching machine, the IPSO-PID synchronous controller of the two-cylinder system was designed. Through the digital simulation and actual testing, the results show that the IPSO-PID synchronous controller is faster in the tracking response speed and better in the synchronization performance than the conventional PID synchronization controller.

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