| 1. |
- Alatalo, Mikael C D, 1959, et al.
(author)
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Electric Machine Design for Traction Applications Considering Recycling Aspects- Review and New Solution
- 2011
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In: IECON Proceedings (Industrial Electronics Conference). - 2162-4704 .- 2577-1647. - 9781612849720 ; , s. 1836-1841
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Conference paper (peer-reviewed)abstract
- With the expansion of the fleet of electric and hybrid electric vehicles worldwide, it is of interest to consider recycling aspects of the parts that are introduced in these new vehicles. This paper focuses on the design of electrical machines considering recycling of its components. The materials to consider are mainly copper, core materials such as lamination steel or iron, and permanent magnets. One design is suggested with a core material of soft magnetic composites which is very suitable for recycling as it is a brittle material and thus simplifies the access of the copper winding. The suggested design shows to have similar performance to a similar size and similar weight commercial permanent magnet electric machine made with steel lamination. © 2011 IEEE.
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| 2. |
- Allgayer, Rodrigo, et al.
(author)
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Analysis of distributed control system using remote method invocation in wireless network
- 2011
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In: IECON 2011 Proceedings. - New York : IEEE. - 9781612849720 ; , s. 346-351
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Conference paper (peer-reviewed)abstract
- This work presents the temporal analysis for a distributed differential control system for a mobile robot deployed on a wireless network using the SunSPOT platform. The system is programmed in Java and each of its part is executed in a distinct processor which cooperates via a wireless network. The communication between the network nodes is made by remote procedure calls, which are implemented by a minimum version of the Java RMI (mRMI), presented in this work. Simulation results are compared to experimental data acquired by the deployment of the system on real devices, the SunSPOTs. The comparisons reveal that the distributed solution presents fairly good results besides the inserted errors due to the wireless communication. © 2011 IEEE.
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| 3. |
- Barac, Filip, 1983-, et al.
(author)
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A Lightweight Routing Protocol for Industrial Wireless Sensor and Actuator Networks
- 2011
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In: Proceedings of IECON 2011 - 37th Annual Conference on IEEE Industrial Electronics Society. - Melbourne, Australia : IEEE Industrial Electronics Society. - 9781612849720 ; , s. 2980-2985
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Conference paper (peer-reviewed)abstract
- The applications of Industrial Wireless Sensor and Actuator Networks (IWSAN) are time-critical and subject to strict requirements in terms of end-to-end delay and reliability of data delivery. A notable shortcoming of the existing wireless industrial communication standards is the existence of overcomplicated routing protocols, whose adequacy for the intended applications is questionable [1]. This paper evaluates the potentials of flooding as a data dissemination technique in IWSANs. The concept of flooding is recycled by introducing minimal modifications to its generic form and compared with a number of existing WSN protocols, in a variety of scenarios. The simulation results of all scenarios observed show that our lightweight approach is able to meet stringent performance requirements for networks of considerable sizes. Furthermore, it is shown that this solution significantly outperforms a number of conventional WSN routing protocols in all categories of interest.
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| 4. |
- Eriksson, Oskar, et al.
(author)
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On Hybrid ARQ Adaptive Forward Error Correction in Wireless Sensor Networks
- 2011
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In: IECON 2011. - : IEEE conference proceedings. - 9781612849720 ; , s. 3004-3010
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Conference paper (peer-reviewed)abstract
- The use of wireless technology in the process industry is becoming increasingly important to obtain fast deployment at low cost. However, poor channel quality often leads to retransmissions, which are governed by Automatic Repeat Request (ARQ) schemes. While ARQ is a simple and useful tool to alleviate packet errors, it has considerable disadvantages: retransmissions lead to an increase in energy expenditure and latency. The use of Forward Error Correction (FEC) however offers several advantages. We consider a Hybrid-ARQ-Adaptive-FEC scheme (HAF) based on BCH codes and Channel State Information. This scheme is evaluated on AWGN and fading channels. It is shown that HAF offers significantly improved performance both in terms of energy efficiency and latency, as compared to ARQ.
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| 5. |
- Ilves, Kalle, 1984-, et al.
(author)
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Capacitor Voltage Ripple Shaping in Modular Multilevel Converters Allowing for Operating Region Extension
- 2011
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In: IECON 2011. - New York : IEEE. - 9781612849720 ; , s. 4403-4408
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Conference paper (peer-reviewed)abstract
- The second-order harmonic in the circulating current of a modular multilevel converter (M2C) influences the capacitor voltage ripple. If no measures are taken to control it, it is not possible to operate the converter with unity modulation index. An open-loop method that precalculates the instantaneous values of the circulating current and the capacitor voltages is used, in order to control the circulating current. A desired second-order harmonic is intentionally induced in the circulating current in order to make the peak of the capacitor voltage coincide with the maximum requested voltage, aiming either to extend the limits of the instantaneous available voltage or avoid unnecessarily high capacitor voltages. A method for numerical estimation of the appropriate amplitude and phase of the induced second-order harmonic is described. The method is experimentally evaluated on a three-phase down-scaled laboratory prototype. From the experiments it was found that significantly improved operating conditions could be obtained.
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| 6. |
- Malik, Naveed Ur Rehman, et al.
(author)
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Theoretical and Experimental Investigation of the Self-Excited Rotating Power Electronic Induction Machine
- 2011
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In: IECON 2011. - 9781612849720 ; , s. 2048-2053
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Conference paper (peer-reviewed)abstract
- This paper presents the theoretical model and analysis of a novel topology of the self-excited induction machine using rotating power electronic converters. The power electronic converters are connected to the rotor of the induction machine and it is shown that the machine operates at unity power factor at variable load conditions including rated load. Special control strategy of the two converters helps in magnetization of the induction machine from the rotor. The experimental analysis is conducted in the industry using 11kW induction machine and close agreement is found between the theoretical model and the experimental results. Besides, the rotor resistance is varied and its effect on the power factor and performance of the machine is studied and analyzed.
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| 7. |
- Neves, Pedro, 1985-, et al.
(author)
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Context and Implications of Learning in Evolvable Production Systems
- 2011
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In: IECON 2011. - New York : IEEE. - 9781612849720 ; , s. 2740-2745
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Conference paper (peer-reviewed)abstract
- More than ever the impact of market turbulence, high product customization and sustainability can be perceived through the increase of dynamics and complexity of manufacturing and business environments. Modular and distributed control structures are nowadays a consensual way, common to the majority of modern paradigms, to deal with unpredictability and volatility of markets. With modern paradigms aiming on adaptability, evolution and reconfiguration as a way to deal with this reality, learning mechanism have become very important to achieve such requirements. This paper presents an exploratory discussion on the topic of agent-based learning applied in a modern production paradigm such as Evolvable Production Systems (EPS).
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| 8. |
- Ribeiro, Luis, et al.
(author)
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Self-organization in automation - The IDEAS pre-demonstrator
- 2011
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In: IECON Proceedings (Industrial Electronics Conference). - : IEEE. - 9781612849720 ; , s. 2752-2757, s. 2752-2757
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Conference paper (peer-reviewed)abstract
- While the application of IT in automation gains traction, mostly motivated by the introduction of Service Orientated Approaches and Multiagent modelling, it is sometimes unclear to practitioners what is the full potential and boundaries of such concepts and technologies. The FP7 IDEAS project is focused in the design and development of Multiagent systems in a Mechatronic context which, to a great extent, implies that Mechatronic Agents must consider and respect mechanical/physical constraints while delivering the widely acknowledged (yet elusively demonstrated) characteristics that may render Agent-based control unique in respect to tolerance to disturbances, plug-ability and scalability. In this context, the present paper details the preliminary proof of concept prototype that validates the IDEAS Mechatronic Agent Architecture. The focus of this early demonstrator is to enlighten on how self-organization, inspired by the Evolvable Assembly System (EAS) Paradigm, can be exploited towards promoting the above mentioned characteristics. The main lessons learned, open points and future developing directions are distilled as the prototype is presented.
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