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Your search keyword '"Luo, Zhiqiang"' showing total 27 results
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27 results on '"Luo, Zhiqiang"'

9. Parallel Scheduling Strategy for Multi Time Scale Plan Security Check Based on Unified Computing Resources

Author

Jia Yupei, He Chunjiang, Chang Naichao, Yu Zhihong, Luo Zhiqiang, Ji Shijie, and Lv Ying

Subjects
Parallel scheduling, Computer science, 020209 energy, Distributed computing, Security check, 0202 electrical engineering, electronic engineering, information engineering, Task analysis, Processor scheduling, Response time, 02 engineering and technology, Scheduling (computing)
Abstract

The security check of dispatching plan can be divided into different application modes, such as pre-day plan security check, daily plan security check and real-time rolling plan security check. At present, different time scale security check separately configure independent parallel computing resources, resulting in large waste of resources, and it is not convenient for system operation and maintenance and unified management. This paper proposes a parallel scheduling strategy for multi time scale plan based on unified computing resources. Firstly, the calculation cycle, calculation content and parallel computing resource requirements of different time scale security check applications are analyzed, and the parallel computing task decomposition method of multi time scale security check application is studied. Considering the computing priority and response time requirements of different security check applications, a parallel computing scheduling method based on the unified management of computing resources is proposed, in which the single security check application uses the average scheduling algorithm, and the multi security check application uses priority rotation scheduling algorithm between the multiple security check applications. Based on the unified parallel computing resources, the application of multi time scale plan security check is verified, which greatly shortens the time of each application, and the response time of each application is satisfactory.

Published
2018

12. Bandwidth allocation for real-time communication with LTPB protocol

Author

Zhang Qishan, Luo Zhiqiang, and Xiong Huagang

Subjects
Engineering, Token passing, Bandwidth allocation, business.industry, Real-time communication, Distributed computing, Node (networking), Local area network, Systems design, business, Security token, Computer network, Frequency allocation
Abstract

The LTPB (Linear Token Passing Bus) protocol is a timed token protocol which has been designed by the SAE (Society of Automotive Engineers) as a LAN standard (AS4074) to support real-time communication in mission-critical systems. This paper studies the real-time characteristics with LTPB network. A bandwidth allocation scheme is proposed based on the traffic load balance of each node. The necessary and sufficient conditions of guaranteeing message deadlines under the allocation scheme has been derived, which can be used to predict whether there is any missed message deadline for any given message set. The bound of the Worst Case Achievable Utilization for the scheme has also been derived and formally proved, which can be used in system design period when exact knowledge of the message set is not available.

Published
2002

13. An optimal bandwidth allocation scheme and real-time performance analysis for LTPB network

Author

Xiong Huagang, Luo Zhiqiang, Li Qiao, and Zhou Qiang

Subjects
Correctness, Bandwidth allocation, Token passing, Channel allocation schemes, business.industry, Computer science, Distributed computing, Local area network, Bandwidth (computing), Fiber Distributed Data Interface, business, Telecommunications network, Computer network
Abstract

This paper studies the problem of guaranteeing real-time message deadlines in communication networks where the LTPB protocol, Linear Token Passing Bus, is employed. According to the exact network timing property, an optimal bandwidth allocation scheme (OLA) for LTPB network and a real-time performance analysis method based on WCAU (the worst available utilization) are proposed. Formal proof that OLA has better performance than any other schemes is given. Finally examples are given to demonstrate the correctness of the conclusion.

Published
2002

26. A Wearable Sensing System for Tracking and Monitoring of Functional Arm Movement.

Author

Nguyen, Kim Doang, Chen, I-Ming, Luo, Zhiqiang, Yeo, Song Huat, and Duh, Henry Been-Lirn

Abstract

This paper presents a new sensing system for home-based rehabilitation based on optical linear encoder (OLE), in which the motion of an optical encoder on a code strip is converted to the limb joints’ goniometric data. A body sensing module was designed, integrating the OLE and an accelerometer. A sensor network of three sensing modules was established via controller area network bus to capture human arm motion. Experiments were carried out to compare the performance of the OLE module with that of commercial motion capture systems such as electrogoniometers and fiber-optic sensors. The results show that the inexpensive and simple-design OLE's performance is comparable to that of expensive systems. Moreover, a statistical study was conducted to confirm the repeatability and reliability of the sensing system. The OLE-based system has strong potential as an inexpensive tool for motion capture and arm-function evaluation for short-term as well as long-term home-based monitoring. [ABSTRACT FROM PUBLISHER]

Published
2011
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