{"title":"LCD Backlight Control for Visibility of Monocular Head-Mounted Displays","authors":"T. Yamazoe, S. Kishi, T. Shibata, T. Kawai","doi":"10.1109/IAS.2009.5324831","DOIUrl":"https://doi.org/10.1109/IAS.2009.5324831","url":null,"abstract":"Monocular head-mounted displays (HMD) are expected as a core device for ubiquitous computing. However, monocular HMD can decrease the visibility by environment light. High luminance environment light makes high contrast between the environment and images presented by monocular HMD. This situation causes perceptional lost of the images. In this study, the authors examined a LCD backlight control method for the visibility of monocular HMD in various light situations. Four kinds of backlight control patterns were obtained by a psychophysical measurement, and the validity was also subjectively evaluated. This paper reports the results of the evaluation and discusses on the suitable backlight control in terms of human factors. levels, 50cd/m 2 , 150cd/m 2 , 250cd/m 2 , 350cd/m 2 . Because, LCDs luminance stable zone was up 33cd/m 2 to under 354cd/m 2 . Four levels illuminant made by Macromedia Flash 8 Professional. Monocular HMD (Nikon, 264cd/m 2","PeriodicalId":178685,"journal":{"name":"2009 IEEE Industry Applications Society Annual Meeting","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-11-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128608820","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Self-Tuning of the PID Controller for a Digital Excitation Control System","authors":"Kiyong Kim, P. Rao, J. Burnworth","doi":"10.1109/IAS.2009.5324819","DOIUrl":"https://doi.org/10.1109/IAS.2009.5324819","url":null,"abstract":"This paper proposes an indirect method for self-tuning of the proportional, integral, and derivative (PID) controller gains. Some of the modern voltage regulator systems are utilizing PID control for stabilization. Based on given excitation system parameters, several PID tuning approaches are reported. Since in general, these parameters are not available during commissioning, specifically the machine time constants, this lack of information causes a considerable time delay and cost of fuel usage for commissioning the automatic voltage regulator (AVR). To reduce the commissioning time and cost, the excitation system parameters are automatically identified and the PID gains are calculated using well-developed algorithms. Recursive least-square (RLS) with linearization via feedback is proposed to identify the system parameters. The performance of the proposed method is evaluated with several generator sets. With self-tuned PID gains, commissioning is accomplished very quickly with excellent performance results.","PeriodicalId":178685,"journal":{"name":"2009 IEEE Industry Applications Society Annual Meeting","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-11-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134225449","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Energy Recovery Electric Bicycle with Two-Quadrant DC Motor Drivers","authors":"Y. Ke, Y. Chuang, H. Chuang","doi":"10.1109/IAS.2009.5324928","DOIUrl":"https://doi.org/10.1109/IAS.2009.5324928","url":null,"abstract":"This work implements the feasibility of an energy recovery electric bicycle with two-quadrant dc motor drivers to control the speed of ridden downhill. When the bicycle is pedaled, slowing down or coasting, the current flows in reverse to charge the battery, which thus enhances sustained ability and decreases energy consumption by the battery. Regarding the driving motors for electric bicycles, permanent magnet dc motors are chosen as the controlled objects in this study. The speed of permanent magnet dc motors is changed via the armature voltage control method by connecting a dc-to-dc driver between the voltage source and the motor. Regarding the drivers, pulse-width-modulation (PWM) is used to control the turn-on timing of semiconductor devices in the drivers. A wider pulse width implies a higher mean armature voltage and higher motor speed, and vice versa. Finally, simulation results using PSpice software demonstrate the theoretical effectiveness and the feasibility of the proposed apparatus.","PeriodicalId":178685,"journal":{"name":"2009 IEEE Industry Applications Society Annual Meeting","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-11-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124325693","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
M. Cervi, T. Marchesan, José Marcos Alonso Alvarez, R. N. Prado
{"title":"Single Stage High Power Factor Electronic Ballast for HID Lamps Using Differential Connection","authors":"M. Cervi, T. Marchesan, José Marcos Alonso Alvarez, R. N. Prado","doi":"10.1109/IAS.2009.5324799","DOIUrl":"https://doi.org/10.1109/IAS.2009.5324799","url":null,"abstract":"This paper presents an electronic ballast topology for HID lamps using differential connection of DC/DC converters. The integration of power factor correction, lamp power control and inverter stages results in a single-stage electronic ballast that supplies the lamp with a low frequency symmetrical square voltage waveform, which avoids both the acoustic resonance phenomenon excitation and the lamp restarting. The ballast consists of a buckboost power factor correction converter and two bidirectional flyback converters connected to the lamp in a differential way. These converters are combined using only two switches that share the same source reference, thus resulting in a simple control circuit.","PeriodicalId":178685,"journal":{"name":"2009 IEEE Industry Applications Society Annual Meeting","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-11-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125617991","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
V. Zeljkovic, P. Praks, R. Vincelette, C. Tameze, L. Válek
{"title":"Automatic Pattern Classification of Real Metallographic Images","authors":"V. Zeljkovic, P. Praks, R. Vincelette, C. Tameze, L. Válek","doi":"10.1109/IAS.2009.5324864","DOIUrl":"https://doi.org/10.1109/IAS.2009.5324864","url":null,"abstract":"This paper addresses the problem of automatic pattern classification in real metallographic images from the steel plant ArcelorMittal Ostrava plc (Ostrava, Czech Republic). Images of manufactured metal plates contain dark dots, i.e. imperfections. We monitor the process quality in the steel plant by determining automatically the number and sizes of these dots which represent plates' imperfections. The proposed algorithm segments the area of plates that contains dots, identifies rows of pixels that contain them, marks and counts them. The obtained results are promising and confirm that the proposed algorithm should serve as the foundation for future research in this area.","PeriodicalId":178685,"journal":{"name":"2009 IEEE Industry Applications Society Annual Meeting","volume":"81 2","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-11-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133878824","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
K. Aoshima, N. Funabashi, K. Machida, Y. Miyamoto, K. Kuga, N. Shimidzu, F. Sato
{"title":"An Ultra-High Definition Spatial Light Modulation Device Driven by Spin-Polarized Electrons","authors":"K. Aoshima, N. Funabashi, K. Machida, Y. Miyamoto, K. Kuga, N. Shimidzu, F. Sato","doi":"10.1109/IAS.2009.5324833","DOIUrl":"https://doi.org/10.1109/IAS.2009.5324833","url":null,"abstract":"We propose a new type of magneto-optical (MO) Spatial Light-Modulation device, driven by spin-polarized current flow, i.e. Spin Transfer Switching (STS-SLM). Its basic operation and characteristics were experimentally confirmed. The proposed SLM device has a spatial resolution as small as several hundred nanometers, and an ultra-high drive speed of several tens of nanoseconds, and its basic operation is possible without active devices. Unlike, existing SLM devices, this device meets both the size and speed requirements of SLMs for use in displaying holographic three-dimensional (3D) moving pictures. To improve SLM device light modulation functionality, we carried out studies on magnetic films with perpendicular magnetic anisotropy to obtain large MO signals, which enabled us to perform improved light modulation performance. In addition, we obtained an MO signal that was thirty times larger than that possible with in-plane anisotropy. We conclude that this type of MO-SLM device is appropriate for displaying future super-high definition, holographic 3-dimensional moving images.","PeriodicalId":178685,"journal":{"name":"2009 IEEE Industry Applications Society Annual Meeting","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-11-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128808012","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Ethernet/IP Applications for Electrical Industrial Systems","authors":"J. C. Warren","doi":"10.1109/IAS.2009.5325173","DOIUrl":"https://doi.org/10.1109/IAS.2009.5325173","url":null,"abstract":"This paper investigates the use of Ethernet/IP communications protocol for data acquisition and control of electrical networks in an industrial environment. A high-speed communication connection among all the devices operating in a distribution network using breakers, contactors, relays, power meters and other devices may allow a large amount of data to be exchanged to and from an industrial/utilities control system. A survey of existing topologies for interface is shown, together with configurations that are be possible using Ethernet/IP standards. The possibility of integrated control of the electrical system into a utilities control network is discussed. The benefits that can be derived from the use of high speed communications such as Ethernet/IP to monitor and control electrical systems are discussed.","PeriodicalId":178685,"journal":{"name":"2009 IEEE Industry Applications Society Annual Meeting","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-11-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114781382","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"An Universal Active Power Filter Controller System","authors":"S. Bhattacharya, H.M. Teshnizi, B. Parkhideh","doi":"10.1109/IAS.2009.5324847","DOIUrl":"https://doi.org/10.1109/IAS.2009.5324847","url":null,"abstract":"An universal active power filter controller system is proposed that adapts itself to both harmonic current source type loads as well as harmonic voltage source type loads is presented in this paper. The system level harmonic filtering application issues of a multiple and clustered harmonic producing load site, such as at an industrial load site or at a distribution substation, are addressed. Harmonic filtering solution for such sites is especially complicated because the overall site load characteristics can change from a harmonic current source type to a harmonic voltage source type load, depending on the operating point of the various individual loads. The proposed Hybrid Series Active Filter (HSAF) solution provides harmonic filtering for harmonic current source type load characteristics, and degrades controllably to a 'pure' Series Active Filter (SAF) to provide harmonic filtering for harmonic voltage source type load characteristics. Both the HSAF and SAF are controlled by Synchronous Reference Frame (SRF) controller. Field test results validate the adaptability and effectiveness of the proposed HSAF/SAF system for a 480V, 750kVA multiple and clustered load site. Index Terms— Hybrid Series Active Filter (HSAF), Series Active Filter (SAF), Harmonic Filtering, Synchronous Reference Frame (SRF) controller, clustered harmonic loads","PeriodicalId":178685,"journal":{"name":"2009 IEEE Industry Applications Society Annual Meeting","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-11-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127429040","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
D. Torregrossa, F. Peyraut, C. Espanet, A. Cassat, A. Miraoui
{"title":"New Estimation of Electromagnetic Sound Power Radiated by a PM Machine: an Active and Passive Control Guideline","authors":"D. Torregrossa, F. Peyraut, C. Espanet, A. Cassat, A. Miraoui","doi":"10.1109/IAS.2009.5324813","DOIUrl":"https://doi.org/10.1109/IAS.2009.5324813","url":null,"abstract":"This paper presents an initial state of the art about the estimation of the sound power emitted by electrical machines. The paper proposes a new method, more accurate, to evaluate the sound power emitted by a PM machine by a 3D FEM mechanical analysis. It also takes into account tangential forces applied on the teeth. Finally the papers shows the impact of any harmonic force in the global emitted sound power in order to establish the most disturbing force. It proposes a guideline for active and passive noise control.","PeriodicalId":178685,"journal":{"name":"2009 IEEE Industry Applications Society Annual Meeting","volume":"52 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-11-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121726143","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Evaluation of Visual Performance When Using Incandescent, Fluorescent, and LED Machine Lights in Mesopic Conditions","authors":"M. Reyes, S. Gallagher, J. Sammarco","doi":"10.1109/IAS.2009.5324893","DOIUrl":"https://doi.org/10.1109/IAS.2009.5324893","url":null,"abstract":"This experiment investigated the effects of different machine-mounted area lighting technologies on visual performance in a simulated underground mine environment. The primary objective was to conduct a comparative evaluation of the lighting technologies based on the visual performance of 36 human subjects in a simulated underground mine environment. Incandescent (Incand), fluorescent (Fluor), and light-emitting diode (LED) technologies were used to create four lighting combinations. Visual performance was quantified for the detection of movement in the peripheral field of view and the identification of ground hazards. Measurements were made of the speed (response time measured in milliseconds), the accuracy (the number of targets and objects missed), and the subjective discomfort rating of the glare experienced for each lighting combination. A secondary objective explored the effects of aging on visual performance. The results indicate that lighting combinations which consisted of LED area lights significantly improved visual performance for the detection of hazards found in the peripheral field of view, as well as those found on the ground. They furthermore indicate that age plays a significant role in visual performance.","PeriodicalId":178685,"journal":{"name":"2009 IEEE Industry Applications Society Annual Meeting","volume":"94 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-11-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121746536","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}