{"title":"Performance Analysis of Optimally Operated DOIG Based Stand-Alone Wind Power Generation System at Different Sites","authors":"T. Saha, D. Kastha","doi":"10.1109/ICIT.2006.372419","DOIUrl":"https://doi.org/10.1109/ICIT.2006.372419","url":null,"abstract":"An algorithm is developed for optimal sizing of wind driven stand-alone double output induction generator (DOIG). Nonlinear constrained optimization technique is used to trace the maximum power generated by the system for a given machine and converter rating. Both inequality and equality nonlinear constraints are considered. Among them the most significant one is the reactive power balance constraints, which is not often considered for stand alone systems. The problem is solved in MATLAB environment. The same algorithm is then used to accommodate different ratings of machines and converters to find the maximum powers as function of wind velocity, load power factor and component's size. Weibull distribution is considered for modeling the wind velocity probability density function of seven Indian sites. The probability density of load power factor is considered to be distributed following Normal distribution. The joint probability of a particular velocity and a particular load power factor is calculated and used to measure the energy, captured by the system at a given site for different machine-converter combinations. The installation and O&M costs are considered to follow the present day trends. The proposed method finally finds the optimum combination of machine and converters (stator and rotor sides) to get minimum cost of energy. It is shown that the proposed wind energy conversion systems (WECS) can produce energy at a competitive low rate for moderately windy sites.","PeriodicalId":103105,"journal":{"name":"2006 IEEE International Conference on Industrial Technology","volume":"48 1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129042918","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":"A Novel Control Technique for Single-Inductor Multiple-Output DC-DC Buck Converters","authors":"P. Patra, S. Samanta, A. Patra, S. Chattopadhyay","doi":"10.1109/ICIT.2006.372361","DOIUrl":"https://doi.org/10.1109/ICIT.2006.372361","url":null,"abstract":"This paper presents the design of a single-inductor regulated multiple-output (SIMO) buck converter with interleaved switched capacitor outputs. A small signal analysis of the buck converter using state space averaging technique is carried out. A compensating network and novel control logic are designed to minimize effects of cross regulation and load transient in the three-coupled outputs. In view of the significant advantages of current-mode control over voltage-mode the main switch of this multiple-output converter is made current-controlled. Interestingly, sub-harmonic oscillations start occurring at a much lower duty cycle than 0.5 in multiple-output current controlled converters. Our work focuses on the cause of instability and the minimum duty ratio beyond which sub-harmonic oscillations occur. Lastly, the expression of a slope-compensating ramp, required to eliminate sub-harmonic oscillations, has been derived for multiple-output converters. The transistor level design of the above has been designed and simulated in cadence analog environment in a 0.5 mu process. The simulation results are in conformity with the evaluated stabilizing ramp to eliminate sub-harmonic oscillations.","PeriodicalId":103105,"journal":{"name":"2006 IEEE International Conference on Industrial Technology","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128770314","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}
F. Ros, J. Borla, Fabrice Leclerc, R. Harba, N. Launay
{"title":"An Industrial Watermarking Process for Plastic Card Supports","authors":"F. Ros, J. Borla, Fabrice Leclerc, R. Harba, N. Launay","doi":"10.1109/ICIT.2006.372635","DOIUrl":"https://doi.org/10.1109/ICIT.2006.372635","url":null,"abstract":"This paper investigates a robust method to watermark and decode images such as identity pictures printed on plastic card supports that have a special interest in industrial areas requiring secure authentication. The watermark is embedded in two different secret middle frequency bands of the DFT (discrete Fourier transform) and its imperceptibility enhanced via a psychological mask incorporated in the spatial domain. Printing and scanning processes are well controlled in smart card area so than image synchronization is reduced to retrieve small translations and rotation in the spatial domain. This process is therefore simple, efficient and fast. The method interest is demonstrated with several watermarked images printed via common industrial printers and decoded by our home-made industrial reader prototype. Pictures were degraded via the print/scan process and by the \"wear and soil test\" that simulates the card usage along its lifetime. The correlation is very often above 50% when pictures are decoded with the right keys. It goes down on average to 10% if a wrong key is used as it is the case of an impostor. The process is very reliable: by setting an authenticity threshold to 20%, the probability of false alarm is less than 10-7.","PeriodicalId":103105,"journal":{"name":"2006 IEEE International Conference on Industrial Technology","volume":"112 3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128831731","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 optical triangulation method for non-contact profile measurement","authors":"S. Kumar, P. Tiwari, S.B. Chaudhury","doi":"10.1109/ICIT.2006.372653","DOIUrl":"https://doi.org/10.1109/ICIT.2006.372653","url":null,"abstract":"In this paper we present a triangulation based range sensor for non-contact profile measurement. The sensor measures distances and orientations of objects and surfaces, based on the triangulation principle. This method is highly independent from optical surface properties and allows significant range measurements. Then a polynomial approximation based direct calibration method of this sensor is described. Next we present a prototype of the measuring system where the object is illuminated with laser sheet of light and viewed with the camera. The illumination angle, viewing angle and baseline between laser source and camera gives the triangulation geometry from which the depth information and 3D shape of the object is to be measured. A simple method for obtaining depth information using least square method is explained next. A comparison with range sensor results with standard calibrated results is performed to judge the suitability and accuracy of the system.","PeriodicalId":103105,"journal":{"name":"2006 IEEE International Conference on Industrial Technology","volume":"90 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125421258","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":"Bit-Streams: Fuzzy Controller Implementation for Motor Control","authors":"N. Patel, S. Nguang, G. Coghill","doi":"10.1109/ICIT.2006.372574","DOIUrl":"https://doi.org/10.1109/ICIT.2006.372574","url":null,"abstract":"A new technique for the hardware implementation of real time fuzzy controllers is presented. This technique uses uniformly weighted bit-streams to represent analogue signals. The technique lends itself to implementation on Field Programmable Gate Arrays (FPGA) and hence has significant advantages over custom VLSI. The success of this technique has been demonstrated by implementing a fuzzy controller for a DC servo motor system.","PeriodicalId":103105,"journal":{"name":"2006 IEEE International Conference on Industrial Technology","volume":"104 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126337137","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":"Discrete Sliding Mode Control of Piezo Actuator in Nano-Scale Range","authors":"S. Khan, M. Elitaş, E. D. Kunt, A. Sabanoviç","doi":"10.1109/ICIT.2006.372418","DOIUrl":"https://doi.org/10.1109/ICIT.2006.372418","url":null,"abstract":"In this paper discrete sliding mode control (SMC) of Piezo actuator is demonstrated in order to achieve a very high accuracy in Nano-scale with the desired dynamics. In spite of the fast dynamics of the Piezo actuator the problem of chattering is eliminated with the SMC control structure. The Piezo actuator suffers from hysteresis loop which is the inherent property and it gives rise to the dominant non-linearity in the system. The proposed SMC control structure has been proved to deliver chattering free motion along with the compensation of the non linearity present due to hysteresis in the system. To further enhance the accuracy of the closed loop system and to be invariant to changes in the plant parameters a robust disturbance observer is designed on SMC framework by taking into consideration the lumped nominal plant parameters. Experimental results for closed loop position and micromanipulation applications are presented in order to verify the Nano-scale accuracy.","PeriodicalId":103105,"journal":{"name":"2006 IEEE International Conference on Industrial Technology","volume":"188 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121620652","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":"Matching of a Separately Excited DC Motor to a Photovoltaic Panel using an Analog Maximum Power Point Tracker","authors":"A. Tariq, M. Asghar","doi":"10.1109/ICIT.2006.372281","DOIUrl":"https://doi.org/10.1109/ICIT.2006.372281","url":null,"abstract":"Water pumping systems powered by a photovoltaic (PV) source normally use costly permanent magnet dc motors because of difficulties associated with the operation of PV powered shunt, series and separately excited motors. This paper suggests use of a separately excited motor in place of a permanent magnet motor. The proposed scheme uses a single PV source for supplying both armature and field winding. The field winding always receives constant current while the armature current varies depending on the load and the ambient condition, such that the maximum available power is drawn from the PV source. Therefore, the characteristic of a permanent magnet dc motor is achieved using a low cost separately excited dc motor. A simple and cheap analog circuit with single dc-dc converter is used to achieve this characteristic. The proposed scheme is simulated and realized. The scheme works satisfactorily both for centrifugal and constant-torque type loads.","PeriodicalId":103105,"journal":{"name":"2006 IEEE International Conference on Industrial Technology","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122951983","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":"A Robust Feedback Linearization Controller Design for Thyristor Control Series Capacitor to Damp Electromechanical Oscillations","authors":"M. Barkhordary, S. Nabavi, M. Motlagh, A. Kazemi","doi":"10.1109/ICIT.2006.372674","DOIUrl":"https://doi.org/10.1109/ICIT.2006.372674","url":null,"abstract":"FACTS devices such as TCSC are capable of controlling power flow, improving transient stability, mitigating sub synchronous resonance (SSR), and reducing fault currents. An efficient control scheme is required to ensure the best use of TCSC. Conventional control strategies are based on approximate linearized model with fixed structures and parameters. But in fact, the nature of a power system not only is highly nonlinear but also exhibits some kind of uncertainty. In this paper, a robust feedback linearization controller is designed for this purpose. First, a suitable diffeomorphism transformation is used to linearize the nominal model. Then, a recursive method is used to complete the adaptive control law. The obtained controller can stabilize the uncertain system if the value of the uncertain parameter belongs to a presupposed closed region. Two different faults have been applied in the system. A symmetrical three-phase short-circuit fault which occurs at the generator bus and at the midpoint of the transmission line as well as a sudden load removing fault are applied. By using computer simulation of different operating conditions and disturbances, the effectiveness of the proposed robust nonlinear controller is established. The designed controller is applicable as it doesn't need any complicated computation while providing good performance in different operating conditions.","PeriodicalId":103105,"journal":{"name":"2006 IEEE International Conference on Industrial Technology","volume":"33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121140766","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":"Single-current-sensor Sliding Mode Driving Strategy For Four-switch Three-phase Brushless DC Motor","authors":"Fu Qiang, Lin Hui, Zhang Hai-tao","doi":"10.1109/ICIT.2006.372625","DOIUrl":"https://doi.org/10.1109/ICIT.2006.372625","url":null,"abstract":"Reviewing the direct current control of four-switch three-phase brushless DC motor (BLDCM), to reduce the system cost further and theoretically explore the system's operating mechanism in more depth, the paper put forward a single-current-sensor sliding mode driving strategy. The uniform mathematic equations of four-switch three-phase BLDCM were represented and six kinds of operating modes (model~model6) were divided up into two groups with model, mode4 classified as the first one and mode2, mode3, mode4, mode5 as the second one. With model and mode2 respectively taken for the examples of the first group and the second group, the fundamental description equations and the standard state space description in every mode were derived and the sliding mode plane, the convergence conditions, and the submode division in each mode were also discussed. In the first type of operating modes a sliding mode control with hierarchical switching scheme in fixed order is adopted, where regulating phase c current then phase a or phase b current successively may direct the system state trajectory toward the two-dimension stable sliding mode plane. Whereas in the second type of operating modes, simply sensing and regulating phase c current can steer the system state trajectory to the one-dimension sliding mode plane. Moreover a phase plane portrait method and a numeric method based on Taylor series expansion to determine the system's convergence domain of the sliding mode plane are also introduced. To verify the feasibility of the plan, a complete simulation system in Matlab6.5/Simulink was built. The whole theoretical analysis and the simulation results verified the validity and reliability of the strategy.","PeriodicalId":103105,"journal":{"name":"2006 IEEE International Conference on Industrial Technology","volume":"518 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116246633","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":"Multilateral Control for Skill Education based on Haptic Data Storage","authors":"T. Shimono, S. Katsura, R. Kubo, K. Ohnishi","doi":"10.1109/ICIT.2006.372353","DOIUrl":"https://doi.org/10.1109/ICIT.2006.372353","url":null,"abstract":"Skill education has been a serious problem in medical and production fields. Since haptic information is so important for human advanced skill as well as visual and audio information, multilateral control that is able to feedback force sensation to several operators is suitable for skill education systems. However, it is necessary for application of multilateral control to haptic skill education that the influences from the operators are variable according to the trainee's skill acquisition level. Thus, this paper proposes multilateral control with the transmission ratio that is variable according to the trainee's skill acquisition level. Additionally, multilateral control based on haptic data storage is proposed as well. The experiments are conducted to verify the validity of the proposed methods.","PeriodicalId":103105,"journal":{"name":"2006 IEEE International Conference on Industrial Technology","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115644573","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}