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In the article the question of building information control system with fault-tolerant architecture is considered. It is proposed to ensure fault tolerance by combining methods of performance reserve and distributed(decentralized) dispatching. An example of the reconfiguration of the system built on the basis of the proposed architecture is also considered.
In this paper, the model of mathematical pendulum is formulated as a non-linear dynamic system. The equilibrium positions of the dynamic system are obtained as a solution of corresponding problem of multiprogram stabilization. This solution is eventually formalized in a form of Hermit's polynomial.
Maintaining vertical position of an inverted pendulum is a simple balancing task, which is widely used to study human control behavior. Yet, much about this behavior remains poorly understood even in the context of simple virtual tasks. The purpose of this study was to investigate whether the control behavior of human operators depends on the type of visual feedback from the controlled system. We...
For the application of deep-sea equipment in Marine scientific research and in the field of resources exploration, a kind of landing control technology used for deep-sea equipment was developed and implemented, and a principle prototype was also completed. The principle prototype takes STM32 processor as the core and combines with altimeter, inclinator and step motor. Then with the adoption of innovative...
This study aims to implement fuzzy logic controller using Mamdani and defuzzification method of Centroid, as a controller for train speed. Research methodology employed consists of Modeling, Design, Testing, and Analysis. At Modeling phase, the system is modeled utilizing transfer function model; at Design phase, the system with fuzzy logic controller is designed; at Testing phase, system output is...
The concept of energy-efficient networking is beginning to become popular in the past few years, gaining increasing importance. Besides the widespread sensitivity to ecological issues, such interest also stems from economic needs, since both energy costs and electrical requirements of telecom providers and Internet Service Providers' infrastructures around the world show a continuously growing trend...
In order to meet the requirements of communications devices in respect of data processing, display control and other aspects, this paper, on the basis of Core Connect bus that IBM proposes, designs and realizes a shared storage type SOPC parallel system by taking advantage of Xilinx's FPGA chip XC4VFX60 embedded two PPC405 processor hard-cores, which effectively improves the data processing capability...
Congestion has been the major root cause for the loss of data during its transit. Many researchers have been working on how to control congestion in end-to-end communication network. Yet, much progress was not achieved and the result was unsatisfied. Fuzzy techniques were employed that use either delay or packet loss. Combination of these two parameters rarely exists. This paper considers Queuing...
Traffic lights are designed to ensure smooth traffic in the cities. The current traffic system is running same over the past few years. As number of vehicles on the roads is increasing constantly, this system is failing to serve traffic congestion problems especially on the intersections. Due to traffic congestion High Priority Vehicles (HPV) also get stuck in traffic which results delay in their...
High-voltage DC (HVDC) transmission lines offer highly efficient transport of electric energy. If applied to comparatively weak grids, self-commutated converters are the proper choice, because they allow stabilizing the grid in case of faults by injecting reactive power. At high voltages of e.g. 400 kV modular multilevel converters (MMC) fulfill all requirements. The first task to master is getting...
The paper describes our initial effort on an experimental capability for the collection and analysis of big data of forensics value from the industrial control systems that operate the electrical power grid. The collection over the network of extensive logs of forensics value is performed through a distributed file system, which is designed to safeguard the real-time requirements of industrial control...
A new methodology for tuning the scaling factors, or gains, of fuzzy proportional-integral-derivative controllers, by taking explicitly into account the closed-loop system performance is proposed in this study. The solution is obtained by solving a nonlinear constrained optimization problem, considering a set of constraints on the scaling factors of the Mamdani-type fuzzy system, and on the plant's...
Technologies for Internet of Things (IoT) such as sensor, network and data processing are advancing rapidly. Thanks to the evolution, many potential applications have been developed in the fields of analysis and automation. In this paper, a platform was designed to connect sensor data with users daily life. As an application of it, AnyControl - a home appliances monitoring and controlling system was...
Social networks and other clouding applications should require a fast response from datacenter's infrastructure. One of the techniques that has been widely used for achieving such requirements is the employment of In-Memory Key-Value Storage (IMKVS) as caching mechanisms in order to improve overall user experience. Memcached and Redis are applications that use IMKVS approach. Commonly IMKVS clients...
In this paper, we design and implement a scheme to build an optimal spanning tree over a hybrid network composed of SDN and legacy switches. SDN is an emerging network technology and gradually gaining adoption worldwide. However, during the technology transition period, which may last several years from now on, inevitably SDN switches and legacy switches will need to coexist in a network. In a legacy...
Software-Defined Networking (SDN) provides a sophisticated and accurate solution for managing network traffic. SDN logically centralizes, in devices called controllers, part of the decision-making logic of flow processing and packet routing. The whole network is controlled according to rules written and deployed in the controller device. However, the large amount of network devices, links, and services...
In this paper, a detailed study and implementation of a reliable and efficient regenerative braking system is presented. It is applied on a prototype electric vehicle, that uses a hydrogen fuel cell as its only power source. Supercapacitors are used to store the energy that is generated during braking, transistors for switching the alternative circuits and an embedded computer controller program undertakes...
This paper presents results of developing and operating a team of multiple unmanned aircraft system. It is a challenging task since the system complexity increases as the number of the unmanned aircraft increases. Given the autonomy of each vehicle in navigation, guidance, control, and vision-based missions, a system of multiple unmanned aircraft is constructed which is expected to be applied to complicated...
This paper describes the design of a medium size three-axis manipulator. The implementation of CNC control is also presented. The equipment has been designed and produced for the purpose of CNC systems teaching based on the electrical drives. The basis for the control system is an industrial computer. The Module with PWM outputs supplies the power to the drives of all three axes which have DC motors...
The automobile fuel injection signal detection device is designed based on single chip microcomputer. The device can be used to capture automobile fuel injection signal. The signal can provide the reference data for automobile fault diagnosis and repair. At the same time the reference data can be used for automobile routine maintenance. The device can also be used to display the real-time fuel consumption...
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