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Address Resolution Protocol (ARP) traffic typically makes up a very significant amount of broadcast traffic in a wide range of networks. A common approach to reduce the network overhead of ARP in the context of Software Defined Networks (SDN) is via Proxy ARP, where the SDN controller answers ARP requests on behalf of the hosts. In this paper, we present a significant improvement of this approach,...
The present paper deals with the development and dynamic performance of non-model based dc link voltage proportional integral (PI) controller for a three phase shunt active power filter (SAPF) implemented using hardware co-simulation. PI controller parameters are tuned using conventional Particle Swarm Optimization (PSO) and Improved Particle Swarm Optimization (IPSO), proposed approach shows the...
Literature is abound with smart wheelchair platforms of various developments, yet to date there has been little technology to find its way to the market place. Many trials and much research has taken place over the last few decades however the end user has benefited precious little. There exists two fundamental difficulties when developing a smart powered wheelchair assistive system, the first is...
Software Defined Networks (SDN) provide a high simplification of the network management by decoupling the control plane from the data plane through the use of controllers. Distributed-Denial-of-Service (DDoS) attacks can make SDN controllers unavailable to process legitimate flow requests from switches. The main approaches to protect controllers against DDoS attacks are essentially based on the attack...
This paper proposes a single-bit ADC system based Proportional and Integral (PI) controller to regulate the output voltage of Capacitive Power Transfer (CPT) systems. A simple single-bit ADC system i.e., Single-Bit Modulator (SBM) is considered as an alternative to the commonly used multi-bit ADC systems. Unique features of employing SBM are 1) its ability to convert analog signals into single-bit...
This work proposes the Quality-of-Service Monitoring and Controlling Driver (QoSMCD), a software-based mechanism that improves the Network-on-Chip (NoC) performance by controlling the packet injection rate, thus reducing link congestion without modifying the hardware. The proposed mechanism works together with the task scheduling policy for controlling the injection of packets into the NoC. This work...
Based on the CompactRIO NI hardware and LabVIEW software as the platform, the model elevator motion control system for the experimental test is designed and implemented. This paper briefly introduces the hardware control system of the four layer model elevator based on NI CompactRIO equipment, and the main hardware equipment used in the model elevator control system including NI company's NI CompactRIO...
As RF environments become more complex from both targeted attacks and challenging RF propagation environments (e.g. urban), pre-planned placement of deployed communications elements becomes arduous for the network planner supporting the digital battlefield. We propose a novel dynamic range extension approach that builds upon our extant planning and optimisation tool, HARLEQUIN, to automatically and...
In this paper, we present the “Adventure-I” mini-AUV prototype developed for educational and research tasks. The mini-AUV is simply equipped with one main propeller and two rudders, without any vertical and lateral thrusters. First, the whole structure and the main dimension of the “Adventure-I” mini-AUV is described. Second, the detailed specifications of the hardware system are illustrated, including...
This work presents the development of a remote laboratory service and its application during the teaching of Control Systems subject of third course in a Telecommunication Technology and Service Engineering degree. The application was successful allowing the student to control the same components as remotely, in a similar way as they were in the laboratory. There was an elevated interest by the students,...
This paper is focused on the performance improvement of the active power factor correctors. Generally, the PFCs are designed as a single boost topology. The main disadvantages of the solution are correction performance at light load, and troublesome heat losses dissipation. The multiphase correctors solve both of these problems. The interleaved correctors enable thermally efficient cooling due to...
SDN efficiency is driven by the ability of controllers to process small packets based on a global view of the network. The goal of such controllers is thus to treat new flows coming from hundreds of switches in a timely fashion. In this paper, we show this ideal remains impossible through the most extensive evaluation of SDN controllers. We evaluated five state-of-the-art SDN controllers and discovered...
In this paper an Integrated Development Environment (IDE) is proposed for the FPGA Controller design for quadcopters (including specifications, design and implementation). This IDE was developed using the High Level Specification of Embedded Systems Rich Client Platform (HiLeS-RCP). The HiLeS-RCP is a framework for specialized “per product line” IDE construction, which links requirements formalization...
Modern factories often collide with the problem of new kind of ciber-threads — Advanced persistent threat, characteristic by its complexity. The example of such kind of threads is virus Stuxnet, which had attacked almost all the automated control systems of Iran nuclear industry. Advanced persistent threats are related to the most dangerous ciber-threads of highest level.
In this paper Field Programmable Gate Array (FPGA) system level based methodology for control system design is proposed and described in details on the case study of three-axis positioning controller implementation. System level design tool, such as Xilinx System Generator (XSG), provides Simulink based FPGA design and automatic converting of XSG model into efficient Very high speed integrated circuit...
The article shows the design and implementation of a gesture control system, which determines the gesture from the movement of the hands. The presented gesture controller system can be built relatively easy from cheap components, so it is ideal development goal in case of a students' project also in the field of project based learning. The movement detected with distance measurement sensors, and the...
With the dominant emergence of hi-tech and the great diversification of flight vehicle's mission requirements, a more reliable control system is needed to face the complex missions and environment. To meet these requirements, a reliability-centered optimal design method for flight vehicle control system is put forward by integrating the reliability analysis into function and performance design. An...
The design of agricultural machinery navigation autopilot system for practical problems includes double RTK-DGPS receiver, navigation tracking controller, intelligent control terminal, the steering Angle sensor, automatic steering control valve group and other parts. According to the functional requirements, system adopts hierarchical control strategy, through the embedded Linux software and ARM development...
On-board computer (OBC) is a very important component in any On-Board Control System to perform guidance and control along with critical operations during the mission, should be designed to execute several tasks that need to be executed in deterministic precise order and for accurate periods of time. Real-time control systems require instantaneous execution of commands either through hardware or software...
In this paper, a realtime testbed for Software Defined Networks (SDN) was implemented using Raspberry Pi as OpenFlow (OF) switches. The implemented testbed provides practical development and testing environment for SDNs. Open vSwitch (OVS) was used to observe the flows and events in the network. With the POX integration, this paper easily provide detailed analysis results for any testing process....
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