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Existing hardware design methodologies provide limited methods to detect security flaws or derive a measure on how well a mitigation technique protects the system. Information flow analysis provides a powerful method to test and verify a design against security properties that are typically expressed using the notion of noninterference. While this is useful in many scenarios, it does have drawbacks...
This paper focus on the stability and Hopf bifurcation analysis in a fractional small-world network model with parameters delay feedback algorithm. By using parameters delay feedback controller, we obtain that the model exhibits of Hopf bifurcation when time delay passes through a critical value. Furthermore, the stability can be improved by adjusting control parameters of parameters delay feedback...
Virtual Private LAN Service (VPLS) is a widely used network technology which connects geographically distributed customer sites as a local area network. However, the process of provisioning a new VPLS circuit is complicated because service provider has to check device configurations one by one. Therefore, it is difficult to provide the service on demand. OpenFlow, the most notable protocol in Software...
This paper develops a battery/supercapacitor powered switched-reluctance motor (SRM) drive for electric vehicle (EV) propulsion. Its on-board integrated charger is formed using the embedded motor drive components. The boosted motor drive DC-link voltage is established by an interleaved DC/DC boost converter from the battery. The super-capacitor (SC) is interfaced to the DC-link via a DC/DC buck converter...
Hand gesture based television (TV) control is attracting more and more researchers. Most of existing works focus on the hand gesture recognition algorithm and the corresponding user interface, while the power consumption or computational cost is not considered carefully. In practice, keeping the camera device and the gesture recognition module running all the time often costs much energy. Till now,...
Excitation system and governor system are the important parts of power system control. Advanced control strategy of excitation and governor system can effectively improve the stability of power system. If we can effectively realize coordination control between the excitation and governor System, we will obtain the best control effect. In this paper, the coordination control system (CCS) between nonlinear...
After a large disturbance, a hydropower group connected to the main system through a long distance line, may split from the system and operate isolated. Based on the actual cases of MAO XIAN and JIU SHI YA hydropower groups in Sichuan province of China, the over-voltage problem in the isolated networks are presented. The feasibility of balancing the excessive charging power by generator's leading...
With the development of control theory and communication technology, networked control systems(NCSs) have received more and more attention. The network that is introduced into the control systems produces some issues, such as network-induced delays, data packets dropout, network resources competition and so on. In this paper, we focus on the network-induced delays. However, the closed-loop control...
Using advanced computer information technology and power system, Real-time Environment Protecting Supervision and Control System (REPSCS) of heavy loads in the Inner Mongolia Electric Power Grid is studied. REPSCS can monitor the operation of the heavy load companies' main equipment and environmental protection electrical equipment. The operation data of those key equipment are collected, processed,...
In this paper, we propose and implement a load balancing Web cluster architecture supported differentiated service. By adjusting the resource quotas assigned to different classes in back-ends and with Maximum Idle First load balancing strategy, the Web cluster system achieves Proportional Delay Differentiation Service and an efficient and fair resource allocation among back-ends. Compared to Least...
According to the dynamic voltage security control, the concept and method of the hybrid control system are introduced, and the dynamic hybrid automatic voltage control (D-HAVC) system is realized. The hybrid hierarchical control system model based on the hybrid theory is set up firstly. In the modelpsilas high layer, the power systempsilas differential-algebraic-equations are linearized, and the eigen-matrixpsilas...
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