{"title":"Rotational stabilization of a rigid body using two torque actuators","authors":"Fazal-ur-Rehman","doi":"10.1109/INMIC.2001.995328","DOIUrl":"https://doi.org/10.1109/INMIC.2001.995328","url":null,"abstract":"A time varying stabilizing feedback controller is constructed for a rigid body with two control torques by employing trajectory interception approach. This approach does not rely on any specific choice of a Lyapunov function. The proposed feedback law is a composition of a standard stabilizing feedback control for a Lie bracket extension of the original system and a periodic continuation of a solution to an open loop trajectory interception problem of original system and its Lie bracket extension on an interval [0 T].","PeriodicalId":286459,"journal":{"name":"Proceedings. IEEE International Multi Topic Conference, 2001. IEEE INMIC 2001. Technology for the 21st Century.","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-12-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128804911","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":"Do not teach algorithms [computer science and mathematics teaching]","authors":"M. A. Iqbal, S. Tahir","doi":"10.1109/INMIC.2001.995319","DOIUrl":"https://doi.org/10.1109/INMIC.2001.995319","url":null,"abstract":"A teacher of computer science and mathematics has two options: use precious classroom time in routine operations and boring formulas, thus killing the interest of students and hampering their intellectual development, or challenge their curiosity by formulating interesting and stimulating questions giving them a taste for independent thinking. The teacher need only provide the building blocks and let students themselves form more complex structures, providing them timely hints when needed. In this paper we demonstrate how a very simple procedure can be used, with minor modifications, as a building block to solve a variety of seemingly unrelated problems in the field of graph algorithms.","PeriodicalId":286459,"journal":{"name":"Proceedings. IEEE International Multi Topic Conference, 2001. IEEE INMIC 2001. Technology for the 21st Century.","volume":"142 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-12-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132483124","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":"Implicit restart scheme for large scale Krylov subspace model reduction method","authors":"N. Ahmed, M.M. Awais","doi":"10.1109/INMIC.2001.995327","DOIUrl":"https://doi.org/10.1109/INMIC.2001.995327","url":null,"abstract":"An implicitly restarted Krylov subspace model reduction method is presented. By this technique a stable, linear transfer function f(s) of order n can be approximated by an order m, where n/spl Gt/m. The oblique projection of stable systems onto a Krylov subspace may generate unstable partial realizations along with undesirable modes. To ensure that the Krylov projected model for a stable system is also stable and contains useful modes only, further operations like stable projection and balanced truncation are then performed to compute a reduced order model f/sub r/(s) of order r (where r<m), which approximates more accurately the original system. This all is imperative because the robust controller design methods based on the small gain theorem require that the actual model f(s)and the nominal model (f,(s)) have the same number of poles in the closed right half complex plane It can be realized that both these projections may be combined as a single oblique projection and this whole process can be fitted into an implicit restart framework. The behavior of the developed algorithm is illustrated by taking a large-scale system. Finally, a criterion for the selection of an accurate reduced order model approximation is proposed for large-scale systems.","PeriodicalId":286459,"journal":{"name":"Proceedings. IEEE International Multi Topic Conference, 2001. IEEE INMIC 2001. Technology for the 21st Century.","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-12-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123884435","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":"Feedback stabilization of a fire truck by using model decomposition","authors":"F. Rehman","doi":"10.1109/INMIC.2001.995336","DOIUrl":"https://doi.org/10.1109/INMIC.2001.995336","url":null,"abstract":"Presents a simple and systematic approach for feedback stabilization of nonholonomic control systems having six state variables and three inputs: a model of fire truck is such an example. The method relies on the decomposition of the model into two subsystems. One subsystem is stabilized by a trajectory interception approach and other subsystem by using just sinusoidal inputs. The mixture of both type of control will stabilize the actual system. This approach does not necessitate the conversion of the system model into a \"chained form\", and thus does not rely on any special transformation techniques. It is shown that, under some conditions, and in the absence of disturbances and model error, this approach furnishes dead-beat control.","PeriodicalId":286459,"journal":{"name":"Proceedings. IEEE International Multi Topic Conference, 2001. IEEE INMIC 2001. Technology for the 21st Century.","volume":"69 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-12-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127397659","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":"New techniques for on-line partial discharge measurements","authors":"Q. Su, K. Sack","doi":"10.1109/INMIC.2001.995313","DOIUrl":"https://doi.org/10.1109/INMIC.2001.995313","url":null,"abstract":"In insulation condition monitoring of HV equipment, partial discharge (PD) might be one of the most effective techniques. Almost all insulation breakdowns start from partial discharges. Even for new equipment, PDs could exist and increase when the insulation is aged. Unlike other techniques that can only determine the average condition of an insulation system, partial discharge activities reflect local insulation problems and can provide accurate information about the deterioration rate in local areas. However, PD measurements on in-service equipment often fail because of the problem of interference. A new PD detector PDD-4 has been jointly developed by Monash University and Insultest Australia that uses advanced digital signal processing techniques, a new directional sensor and a multiple noise gating system for noise discrimination and blocking. In conjunction with a multiple terminal measurement technique, partial discharges of high voltage equipment such as transformers, generators and power cables can be more accurately measured.","PeriodicalId":286459,"journal":{"name":"Proceedings. IEEE International Multi Topic Conference, 2001. IEEE INMIC 2001. Technology for the 21st Century.","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-12-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122253738","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}
P. Jacquet, P. Muhlethaler, T. Clausen, A. Laouiti, A. Qayyum, L. Viennot
{"title":"Optimized link state routing protocol for ad hoc networks","authors":"P. Jacquet, P. Muhlethaler, T. Clausen, A. Laouiti, A. Qayyum, L. Viennot","doi":"10.1109/INMIC.2001.995315","DOIUrl":"https://doi.org/10.1109/INMIC.2001.995315","url":null,"abstract":"In this paper we propose and discuss an optimized link state routing protocol, named OLSR, for mobile wireless networks. The protocol is based on the link state algorithm and it is proactive (or table-driven) in nature. It employs periodic exchange of messages to maintain topology information of the network at each node. OLSR is an optimization over a pure link state protocol as it compacts the size of information sent in the messages, and furthermore, reduces the number of retransmissions to flood these messages in an entire network. For this purpose, the protocol uses the multipoint relaying technique to efficiently and economically flood its control messages. It provides optimal routes in terms of number of hops, which are immediately available when needed. The proposed protocol is best suitable for large and dense ad hoc networks.","PeriodicalId":286459,"journal":{"name":"Proceedings. IEEE International Multi Topic Conference, 2001. IEEE INMIC 2001. Technology for the 21st Century.","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-12-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132892759","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":"Performance prediction of photovoltaic hybrid power systems","authors":"A. Zahedi, S. Wren","doi":"10.1109/INMIC.2001.995312","DOIUrl":"https://doi.org/10.1109/INMIC.2001.995312","url":null,"abstract":"The objective of this paper is to present a numerical approach for evaluating the performance of PV-hybrid power systems. A method is developed to predict the performance of all components integrated into a PV-hybrid system. The system under investigation is a hybrid power system, in which the integrated components are PV array, a battery bank for backing up the system and a diesel generator set for supporting the battery bank. State of charge (SOC) of batteries is used as a measure for the performance of the system. The running time of the diesel generator is determined by the SOC of the batteries. In this method it is shown that the usage of PV electricity is maximized, the size of the components is optimized and the amount of fuel used for the diesel generator is minimized.","PeriodicalId":286459,"journal":{"name":"Proceedings. IEEE International Multi Topic Conference, 2001. IEEE INMIC 2001. Technology for the 21st Century.","volume":"40 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-12-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121453881","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":"FoIP gateways-architectures, implementation and QoS issues","authors":"Y. Rafiq, O. Bashir, S.I. Shah, S.A. Khan","doi":"10.1109/INMIC.2001.995320","DOIUrl":"https://doi.org/10.1109/INMIC.2001.995320","url":null,"abstract":"Real-time facsimile communication over the Internet is a challenging task. Facsimile devices and protocols have been optimised for facsimile communication over PSTN (public switched telephone network) links. To allow these devices to communicate over the Internet, FoIP (Facsimile over Internet Protocol) gateways are required. Source and destination facsimile machines connect to these gateways over PSTN links. Peer gateways are connected to each other over the Internet. The inherent best-effort nature of the Internet poses serious QoS (quality of service) issues for facsimile transmission. Packet losses, delays and delay variations may disrupt a facsimile session. FoIP gateways providing real-time FoIP communication need to incorporate measures that attempt to provide efficient and reliable transport service over the Internet. This paper describes typical architectural components of FoIP gateways. QoS issues related to real-time FoIP transfer are highlighted and measures are discussed that assist in resolving these issues.","PeriodicalId":286459,"journal":{"name":"Proceedings. IEEE International Multi Topic Conference, 2001. IEEE INMIC 2001. Technology for the 21st Century.","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-12-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121765485","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":"Mobile radio channel impulse response: measurements and interpretations","authors":"A. Sheikh, S. Hau","doi":"10.1109/INMIC.2001.995330","DOIUrl":"https://doi.org/10.1109/INMIC.2001.995330","url":null,"abstract":"An impulse response measurement campaign was undertaken at 1.8 GHz in Hong Kong. This paper presents a selection of measurement results. A pseudorandom sequence clocked at 30 MHz occupying an RF bandwidth of 60 MHz was used as a probing signal. The results taken at a selected location are analyzed for CIR parameters like delay spread, average delay and significant number of paths. An attempt has been made to relate the measured data to the geometry of environmental features surrounding the transmitter and the receiver.","PeriodicalId":286459,"journal":{"name":"Proceedings. IEEE International Multi Topic Conference, 2001. IEEE INMIC 2001. Technology for the 21st Century.","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-12-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121294099","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 generic integer programming approach to hardware/software codesign","authors":"S. A. Khayam, S. A. Khan, S. Sadiq","doi":"10.1109/INMIC.2001.995306","DOIUrl":"https://doi.org/10.1109/INMIC.2001.995306","url":null,"abstract":"In this work, a generic Integer Programming (IP) model for hardware/software codesign is presented. Efficient behavioral description of the required problem space is first developed using a high level procedural language. This behavioral model serves two purposes: system-level simulations and partitioning analysis. This behavioral model is used to generate a cost matrix for all system level modules. First, the behavioral model is used to determine the cost of program and data memory. Secondly, the behavioral code is profiled to generate information about module execution overhead. Inter-module communication cost is determined using the module call-flow graph. A cost matrix is developed for the modules. Each column of the cost matrix is given appropriate weight and an IP model is solved to make a decision whether a module is to be implemented in hardware or software.","PeriodicalId":286459,"journal":{"name":"Proceedings. IEEE International Multi Topic Conference, 2001. IEEE INMIC 2001. Technology for the 21st Century.","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-12-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116058723","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}