| 1. |
- Aminian, Behdad, et al.
(author)
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GISOO : A virtual testbed for wireless cyber-physical systems
- 2013
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In: Industrial Electronics Society, IECON 2013 - 39th Annual Conference of the IEEE. - : IEEE. - 9781479902248 ; , s. 5588-5593
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Conference paper (peer-reviewed)abstract
- The increasing demand for wireless cyber-physical systems requires correct design, implementation and validation of computation, communication and control methods. Traditional simulation tools, which focus on either computation, communication or control, are insufficient when the three aspects interact. Efforts to extend the traditional tools to cover multiple domains, e.g., from simulating only control aspects to simulating both control and communication, often rely on simplistic models of a small subset of possible communication solutions. We introduce GISOO, a virtual testbed for simulation of wireless cyber-physical systems that integrates two state-of-the art simulators, Simulink and COOJA. GISOO enables users to evaluate actual embedded code for the wireless nodes in realistic cyber-physical experiments, observing the effects of both the control and communication components. In this way, a wide range of communication solutions can be evaluated without developing abstract models of their control-relevant aspects, and changes made to the networking code in simulations is guaranteed to be translated into production code without errors. A double-tank laboratory experimental setup controlled over a multi-hop relay wireless network is used to validate GISOO and demonstrate its features.
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| 2. |
- Antonino-Daviu, José Alfonso, et al.
(author)
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Multi-harmonic tracking for diagnosis of rotor asymmetries in wound rotor induction motors
- 2013
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In: IECON Proceedings (Industrial Electronics Conference). - Piscataway, NJ : Institute of Electrical and Electronics Engineers (IEEE). - 9781479902248 ; , s. 5555-5560
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Conference paper (peer-reviewed)abstract
- Most of the research work hitherto carried out in the induction motors fault diagnosis area has been focused on squirrel-cage motors in spite of the fact that wound-rotor motors are typically less robust, having a more delicate maintenance. Over recent years, wound-rotor machines have drawn an increasing attention in the fault diagnosis community due to the advent of wind power technologies for electricity generation and the widely spread use of its generator variant, the Doubly-Fed Induction Generators (DFIGs) in that specific context. Nonetheless, there is still a lack of reliable techniques suited and properly validated in wound-rotor industrial induction motors. This paper proposes an integral methodology to diagnose rotor asymmetries in wound-rotor motors with high reliability. It is based on a twofold approach; the Empirical Mode Decomposition (EMD) method is employed to track the low-frequency fault-related components, while the Wigner-Ville Distribution (WVD) is used for detecting the high-frequency failure harmonics during a startup. Experimental results with real wound-rotor motors demonstrate that the combination of both perspectives enables to correctly diagnose the failure with higher reliability than alternative techniques relying on a unique informational source
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| 3. |
- Antonopoulos, Antonios, et al.
(author)
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Stability Analysis of Modular Multilevel Converters With Open-Loop Control
- 2013
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In: 39th Annual Conference of the IEEE Industrial Electronics Society, IECON 2013. - : IEEE. - 9781479902248 ; , s. 6316-6321
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Conference paper (peer-reviewed)abstract
- Modular multilevel converters (M2Cs) require that the controller is designed so that the submodule capacitor voltages are equalized and stable, independent of the loading conditions. Provided that the individual capacitor voltage sharing is managed effectively, an open-loop strategy can been designed to ensure that the total amount of energy stored inside the converter always will be controlled. This strategy, using the steady-state solutions of the dynamic equations for controlling the total stored energy in each converter arm, has proven to be effective. The intention of this paper is to explain in a rigorous way the mechanism behind the suggested strategy, and to prove that, when this open-loop strategy is used, the system becomes globally asymptotically stable.
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| 4. |
- Baradar, Mohamadreza, et al.
(author)
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Ohmic loss minimization in AC transmission systems with embedded DC grids
- 2013
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In: 39th Annual Conference of the IEEE Industrial Electronics Society, IECON. - : IEEE conference proceedings. - 9781479902248 ; , s. 2117-2120
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Conference paper (peer-reviewed)abstract
- The HVDC systems built based on the voltage source converters (VSC) can bring several benefits to the AC power systems. Better voltage profile, increasing power flow controllability, lower ohmic loss, and higher transfer capability are some major benefits of such systems. This paper investigate the impact of VSC-type DC grids installed in the AC power systems on the ohmic network losses. This is done by formulating a convex optimization problem which minimises the ohmic losses (both in AC and DC grids) subject to the technical constraints of both AC and DC system. The formulated optimisation problem is a conic optimisation problem which can be solved using the commercially available optimisation softwares. The conic AC-DC optimal power flow, CAD-OPF, is coded in GAMS platform and solved using the MOSEK solver. The IEEE 30-bus example system is modeled and studied.
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| 5. |
- Ferreira, João Dias, et al.
(author)
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Bio-inspired self-organised mechatronic-agent interactions to support product emergence
- 2013
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In: IECON 2013 - 39th Annual Conference of the IEEE Industrial Electronics Society. - : IEEE. - 9781479902248 ; , s. 7434-7439
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Conference paper (peer-reviewed)abstract
- The emergence of modern manufacturing paradigms together with the growing interest on distributed architectures has been increasing the use of biologically inspired solutions. However, somehow along the way, developed approaches have converged towards more traditional systems where the physical and logical decoupled nature of the system has been partially lost. In this context, the presented work aims to introduce and analyse a new fully physically and logically decoupled bio-inspired self-organising approach that tries to bring to the mechatronic-agent based manufacturing architectures the dynamics of biological systems. Furthermore, the manufacturing systems are approached from a bottom-up perspective in an attempt to reduce the specification of the production processes to the minimum.
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| 6. |
- Hamid, Mohamed, 1983-, et al.
(author)
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Multi-Interference Detection Algorithm using Discriminant Analysis in Industrial Environments
- 2013
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In: 39th Annual Conference of the IEEE Industrial Electronics Society (IECON 2013). - New York : IEEE conference proceedings. - 9781479902248 ; , s. 5600-5604
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Conference paper (peer-reviewed)abstract
- In this paper a technique to detect multiple impulsive interference in an industrial environment is proposed and evaluated. The technique is based on discriminant analysis which iteratively peels-off the impulsive interferences. The probability of detection of the technique is tested with and without the iterative peeling-off part. The simulations show that the SIR can be improved by applying the detection technique and then blank or clip the impulsive interference components. The improvement in the SIR depends on the impulsive interference parameters and it can reach up to 17 dB.
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| 7. |
- Karvelis, Petros, et al.
(author)
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An intelligent icons approach for rotor bar fault detection
- 2013
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In: IECON Proceedings (Industrial Electronics Conference). - Piscataway, NJ : Institute of Electrical and Electronics Engineers (IEEE). - 9781479902248 ; , s. 5526-5531
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Conference paper (peer-reviewed)abstract
- In this paper we propose the use of Intelligent Icons for both automatic assessment and representation of asynchronous machines' condition. The method focuses on the analysis of the start-up current for the isolation of a component that is able to pinpoint faulty signatures. The analysis is based on the application of Empirical Mode Decomposition (EMD) which acts as an adaptive filter during the start up and subsequently on the application of Symbolic Aggregate approXimation (SAX) for the transformation of the extracted component into a symbolic representation. Using this symbolic representation, an automated detection procedure can be developed that discriminates between faulty and normal conditions using an intelligent Icons approach while at the same time the information can be presented to the user in a more intuitive way
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| 8. |
- Norrga, Staffan, 1968-, et al.
(author)
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A Novel Inverter Topology for Compact EV and HEV Drive Systems
- 2013
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In: 39th Annual Conference of the IEEE Industrial Electronics Society, IECON 2013. - : IEEE. - 9781479902248 ; , s. 6590-6595
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Conference paper (peer-reviewed)abstract
- This paper describes a new modular inverter topology suitable for compact drive systems in electric road vehicles. The topology is based on dc-side cascading of three-phase two level inverter bridges, each feeding a set of three-phase windings of a motor. This topology is compared by calculation to the known modular high-frequency (MHF) converter, and is found to have similar losses and semiconductor expenditure requirements. Simulations verify the dynamic and static properties of the converter in a realistic application.
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| 9. |
- Ray, Apala, et al.
(author)
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A Solution for Industrial Device Commissioning along with the Initial Trust Establishment
- 2013
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In: IECON Proceedings (Industrial Electronics Conference). - 9781479902248 ; , s. 5570-5575
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Conference paper (peer-reviewed)abstract
- Industrial device commissioning along with the initial distribution of keying material is an important step for the security of industrial plants. An efficient key management system is required in cryptography for both symmetric key or public/private key encryption. Most of the key management system use either pre-installed shared keys or install keys using out-of-band channels. In addition to that, the sensor devices both wired and wireless need to be verified whether it is connected to the correct physical entity since these devices are linked with the physical world. Therefore in industrial plants there is a requirement to automate the trust bootstrapping process, where the devices from upper level in communication network will be aware that the communication device from below level is trusted. In this work, we present a workflow that uses the existing trust mechanism on employees to enable the initial bootstrap of trust in the devices, and also optionally support the commissioning engineer to download the required configuration data in the device as well. Thus, this approach presents a unique solution to the initial trust distribution problem reusing the existing features and facilities in industrial plants
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| 10. |
- Ribeiro, Luis, et al.
(author)
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A study of JADE’s messaging RTT performance using distinct message exchange patterns
- 2013
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In: Proceedings IECON 2013. - : IEEE. - 9781479902248 ; , s. 7410-7415
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Conference paper (peer-reviewed)abstract
- JADE is a multiagent-based framework widely used for prototyping agent-oriented mechatronic architectures. JADE's messaging performance is normally rated unsuitable for real time operation in a mechatronic context and there are a few papers in the literature backing up this claim. The author's share this view however the main purpose of this paper is to highlight that distinct message exchange coding patters influence the round trip time (RTT) of the messages quite substantially. The paper presents a comparative performance analysis, based on the RTT, of these coding patterns. The majority of the published tests is focused in the evaluation of the RTT when pairs of communicating agents are added to the platform. The analysis presented in this work is focused on the efficiency of each method as the responder agent receives messages continuously.
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