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Motivated by the need of testing control strategies, where students can observe the importance of practical test in control theories, and the high price of testing platforms, this study target the classic inverted pendulum control system construction and implementation using wasted components from printers and hard drives, electronic components and an open source microcontroller, resulting in a low...
This paper presents a new methodological approach for selection of appropriate type and number of Membership function (MF's) for the effective control of Double Inverted Pendulum (DIP). A Matlab-Simulink model of the system is built using governing mathematical equations. The relation between error tolerance of successive approximations and the number of MF's for controllers is also shown. Stabilization...
This paper presents a hardware solution for embedding multi-agent controls of PEBB based power electronics systems. The architecture of the proposed solution is presented here together with the experimental results of Hardware in the Loop testing of a prototype. Validation of both power and communication characteristics has been addressed. The test case consists of the voltage control of a radial...
In accordance with the increase in importance of software within railway signaling system, risk costs due to the software error are increasing too. Accordingly, software validation in various aspects is required, and the needs for supporting tool which can automate it are raised. In Korea, the black-box testing tool of railway signaling system taking into consideration of the convenience of use which...
Existing tools for Software-Defined Networking (SDN) data plane testing can be classified into two classes: white box and black-box. For the former, all or part of source codes should be accessed. But for testers outside the manufacturers, the accessing of source code is impossible or very difficult in most cases, especially for hardware devices. For the latter, test cases are manually developed,...
In this study, an LTE-R wireless communication interface installed at the test railway line for field-testing of onboard oriented train control system was tested. This on-board oriented train control system was developed to improve operational efficiency through minimization of wayside structures. Test procedures and results are described here. Use of LTE-R wireless communication network installed...
Mechatronics engineering addresses the design and development of correct and safe integrated mechanical, electronic control systems and embedded computers in the electrical energy and other industries. Many mechatronics engineers still concentrate on traditional approaches to the exclusion of security requirements for the gathering, processing, storing and distribution of data. This lack results in...
This paper extends the well-known Dijkstra's shortest path algorithm to consider not only the edge weights but also the node weights for a graph derived from the underlying SDN topology. We use Pyretic to implement the extended Dijkstra's algorithm and compare it with the original Dijkstra's algorithm and the unit-weighted Dijkstra's algorithm under the Abilene network topology in terms of end-to-end...
Recently, interest for vehicle safety system and applications, which supports drivers can drive safely and easily via V2X Communications, is increasing. Generally, FOTs (field operational tests) method is performed in order to verify and evaluate vehicular safety system or applications and it requires driving test in real road environments. FOTs method, however, costs huge human and material resources...
Among health behaviors, physical activity has the most extensive record of research using passive sensors. Control systems and other system dynamic approaches have long been considered applicable for understanding human behavior, but only recently has the technology provided the precise and intensive longitudinal data required for these analytic approaches. Although sensors provide intensive data...
Continuous Integration (CI) is widely adopted as an efficient practice for code integration. CI advocates frequent integrations to the version control system to mitigate the "integration hell" problem. The CI process ensures that the binaries are always up to date by performing a build for every set of developer submissions. Since the developer submissions to CI are processed in a queued...
Securing the database against frequent attacks is a big concern; attackers usually intend to snitch private information and damage databases. These days, web applications are widely used as a meddler between computer users. Web applications are also used mostly by e-commerce companies, and these types of applications need a secured database in order to keep sensitive and confidential information....
Software Defined Networking and OpenFlow have forever changed the landscape of computer networking. Researchers and leading IT corporations have been embracing this evolution in recent years, but greater commercial and industrial acceptance is contingent upon successful “real-world” testing. Testing which focuses on the stability and performance gains SDN/OpenFlow provides. One particular area of...
Nowadays the requirement of stability for system bus such as CPCI/PXI or the express versions is increasing significantly, as measurement and control system is taking an immensely rising load, especially in the area of aeronautics and astronautics testing. The hot-swap and hot-plug ability of CPCI devices, which is formally established in the specification of PICMG V2.0, comes to be considered as...
The correctness of PLC (Programmable Logic Controller) program in automatic control is vital to this kind of safety-critical applications. In this paper, we present a useful method of combinational testing for correctness of PLC programs. The method is based on the denotational semantics of PLC program and the semantic functions for basic instructions. It establishes the definition of denotational...
Most manufacturers of electronics components focus on dedicated market, their core of competence, on macro- or microelectronics. Therefore, the specific applications are the sometimes the responsibility of the users. Starting from this idea, the authors describe the relevant electrical phenomena occurring in the public transportation systems (PTS). These represent the foundation of a technical specification,...
This article aims to describe a successful experiment involving Courses Interdisciplinarity, Agile Methods, and Agile Tests in a Problem-based Learning, applied at different courses of the graduate program of Electronics and Computer Engineering at the Brazilian Aeronautics Institute of Technology, to improve the process of teaching/learning and to reduce the resources involved.
The paper deals with the control methods for routing optimization of bogie in rail track (i.e. rail channel) with the usage of GPS. Consequently the GPS information is used for determining of position and the curve radius track. These parameters are necessary for the tested control methods. For this research stage the experimental rail vehicle powered by the traction battery is also utilized. This...
Embedded electrical systems for passenger vehicles are highly complex distributed systems with varying system boundaries. The surge towards further electrification of vehicles demands the deployment of high voltage systems that provide propulsion through an electric motor as part of a hybrid electric or pure electric drive train. This demands additional care and robust deployment to ensure the safety...
This guide includes criteria, definitions, and test procedures for evaluating the dynamic performance of excitation control systems for synchronous machines as applied by electric utilities.
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