Event-B is a formal method which uses first-order logic and set theory as the underlying mathematical notation for specifying and reasoning about discrete systems. Rod in is an Eclipse plug-in that offers a good tool ...
详细信息
ISBN:
(纸本)9781479917815
Event-B is a formal method which uses first-order logic and set theory as the underlying mathematical notation for specifying and reasoning about discrete systems. Rod in is an Eclipse plug-in that offers a good tool support for Event-B. the aim of this paper consists in applying Event-B and Rod in to prove the non-starvation property of satisfying requests for services in a multi-agent system.
this paper proposes a fractional order control scheme for the stabilization of the nonlinear chaotic Genesio-Tesi systems. Stability analysis of the nonlinear chaotic system is studied for the fractional order integra...
详细信息
ISBN:
(纸本)9781467392341
this paper proposes a fractional order control scheme for the stabilization of the nonlinear chaotic Genesio-Tesi systems. Stability analysis of the nonlinear chaotic system is studied for the fractional order integral and derivative actions using the bifurcation diagram. We show by numerical simulations that the fractional (PID mu)-D-lambda controller provides a good closed loop system performance for stabilizing the problem of unstable fixed point.
Dependability of control system is one of the most complex problems in space projects. Decision making in case of contingencies is a non-trivial process requiring some "intelligence". We can implement the &q...
详细信息
Dependability of control system is one of the most complex problems in space projects. Decision making in case of contingencies is a non-trivial process requiring some "intelligence". We can implement the "onboard intelligence" in different ways. the most common approach involves its implementation in the source code of the flight control software. the approach presented in the paper uses an onboard real-time decision making system. the decision making rules can be added or updated from Earth by radio channel. Currently, the rules should be specified in a table form, leading to misunderstandings in project team and errors. the improved approach provides the special toolset including, visual constructor of rules and support of rules' verification. the proposed approach allows the engineers to define visually construct and update the decision making rules without programming background easily. the toolset prototype was positively evaluated at enterprise JSC Information Satellite systems, Russia. (C) 2016 the Authors. Published by Elsevier B.V. this is an open access article under the CC BY-NC-ND license (http://***/licenses/by-nc-nd/4.0/). Peer-review under responsibility of KES international
Motion control of biped robots includes a variety of tasks, such as controlling a robot walking on a horizontal plane, climbing stairs, moving on uneven surfaces, etc. this article describes modeling and designed cont...
详细信息
ISBN:
(纸本)9781479987016
Motion control of biped robots includes a variety of tasks, such as controlling a robot walking on a horizontal plane, climbing stairs, moving on uneven surfaces, etc. this article describes modeling and designed control system for a biped robot standing on nonstationary plane. the problem of stabilization of the balancing robot, assembled on the basis of a robotic kit Bioloid, is considered for the case, when trajectories of movable plane are assumed to be bounded and unknown in advance. In contrast to previous works [4], [8] the mathematical model of the system is completed with dynamical equations and an estimator of nonstationary plane angle and angular velocity is designed. Performance of the proposed control algorithm is confirmed by numerical simulation.
In many practical applications, that can be found in control engineering, the functionality and safety of the overall control process rely on a proper function of the respective operating system. this fact makes the s...
详细信息
ISBN:
(纸本)9781467366274
In many practical applications, that can be found in control engineering, the functionality and safety of the overall control process rely on a proper function of the respective operating system. this fact makes the software one of the most safety critical elements of such practical applications, especially when the control process is placed in an inhospitable environment not directly accessible to man. One of such environments is Space. In this paper a problem of designing a safety critical real time operating system for a small space satellite called CubeSat is discussed. It is shown how to design such an operating system and how to increase its reliability and to protect it against single upset events.
In this study, based on the traditional temperature and humidity control system, fully considering the coupling relationship between temperature and humidity in plant factory, designed a decoupling control system of t...
详细信息
We propose a communication architecture for EtherCAT master motivated by the technological progress in IT systems and Industrial Ethernet in controlsystems. In the proposed method, a dedicated hardware named the Ethe...
详细信息
ISBN:
(纸本)9781467379298
We propose a communication architecture for EtherCAT master motivated by the technological progress in IT systems and Industrial Ethernet in controlsystems. In the proposed method, a dedicated hardware named the EtherCAT accelerator offers virtualized real-time and IT communication channels by operating automatic control frame generation, time synchronization protocol, and transmission scheduling of frames based on synchronized time. Using the EtherCAT accelerator enables highly accurate cyclic communications under IT communications such as IP. We prototyped the proposed architecture on a field programmable gate array (FGPA) as hardware and Linux as software. the results show that the master can transmit 64-byte packets in a 30 mu s cycle synchronized to an EtherCAT network with less than 1 mu s is accuracy.
this paper presents an overview of smart grid and issues regarding security of cyber-physical components. the motivation for choosing this topic resumes to the present transition of the power grid to an advanced, two-...
详细信息
ISBN:
(纸本)9781479917815
this paper presents an overview of smart grid and issues regarding security of cyber-physical components. the motivation for choosing this topic resumes to the present transition of the power grid to an advanced, two-way communication and distributed generation of renewable energy smart grid. Due to the fact that the power grid's infrastructure, systems and applications were not designed to easily integrate the IT network, architectural vulnerabilities arise leading to physical and cyber security risks.
this paper describes the implementation of a surveillance, monitoring and teleconference system used by the TELEDIM telemedicine system. Windows tablets and smart phones are used to capture audio and video data and se...
详细信息
this paper describes the implementation of a surveillance, monitoring and teleconference system used by the TELEDIM telemedicine system. Windows tablets and smart phones are used to capture audio and video data and send them through an ad-hoc wireless internet network to surveillance servers.
Autonomous and semi-autonomous robotic systems are increasingly being designed, evaluated and used for hazardous operations in boththe military and civilian domains. While many of the requirements for the lower- leve...
详细信息
ISBN:
(纸本)9781618395528
Autonomous and semi-autonomous robotic systems are increasingly being designed, evaluated and used for hazardous operations in boththe military and civilian domains. While many of the requirements for the lower- level control functions for these devices are currently well understood, the issues of determination and control of higher-level behaviors are only now beginning to be addressed. this paper addresses the issues of creating a flexible, robust architecture suitable for modeling, simulating and controlling the higher-level operation of intelligent robotic systems in military and civilian applications. It also describes the creation of ESAgent, a prototype for laboratory evaluation of these concepts using JADE and JESS.
暂无评论