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Dissertations / Theses on the topic 'Unit of measurement'

Author: Grafiati

Published: 4 June 2021

Last updated: 25 July 2025

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1

Kepper, James H. IV. "MEMS IMU inertial measurement unit one-way-travel-time inertial measurement unit autonomous underwater vehicles." Thesis, Massachusetts Institute of Technology, 2017. http://hdl.handle.net/1721.1/113756.

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Thesis: S.M. in Oceanographic Engineering, Joint Program in Applied Ocean Science and Engineering (Massachusetts Institute of Technology, Department of Mechanical Engineering; and the Woods Hole Oceanographic Institution), 2017.<br>Cataloged from PDF version of thesis.<br>Includes bibliographical references (pages 83-87).<br>Recent advances in acoustic navigation methodologies are enabling the way for AUVs to extend their submerged mission time and maintain a bounded XY position error. Additionally, advances in inertial sensor technology have drastically lowered the size, power consumption, an

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Cinarel, Dilara. "Vibration Isolation Of Inertial Measurement Unit." Master's thesis, METU, 2012. http://etd.lib.metu.edu.tr/upload/12614069/index.pdf.

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Sensitive devices are affected by extreme vibration excitations during operation so require isolation from high levels of vibration excitations. When these excitation characteristics of the devices are well known, the vibration isolation can be achieved accurately. However, it is possible to have expected profile information of the excitations with respect to frequency. Therefore, it is practical and useful to implement this information in the design process for vibration isolation. In this thesis, passive vibration isolation technique is examined and a computer code is developed which would

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Xing, Zengping. "Magnetoelectric Device and the Measurement Unit." Diss., Virginia Tech, 2009. http://hdl.handle.net/10919/27387.

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Magnetic sensors are widely used in the field of mineral, navigational, automotive, medical, industrial, military, and consumer electronics. Many magnetic sensors have been developed that are generated by specific laws or phenomena: such as search-coil, fluxgate, Hall Effect, anisotropic magnetoresistance (AMR), giant magnetoresistance (GMR), magnetoelectric (ME), magnetodiode, magnetotransictor, fiber-optic, optical pump, superconducting quantum interference device (SQUID), etc. Each of these magnetic field sensors has their merits and application areas. For low power consumption (<10uW), qua

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Benbasat, Ari Yosef 1975. "An inertial measurement unit for user interfaces." Thesis, Massachusetts Institute of Technology, 2000. http://hdl.handle.net/1721.1/38451.

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Thesis (S.M.)--Massachusetts Institute of Technology, Program in Media Arts & Sciences, 2000.<br>Includes bibliographical references (p. 131-135).<br>Inertial measurement components, which sense either acceleration or angular rate, are being embedded into common user interface devices more frequently as their cost continues to drop dramatically. These devices hold a number of advantages over other sensing technologies: they measure relevant parameters for human interfaces and can easily be embedded into wireless, mobile platforms. The work in this dissertation demonstrates that inertial measur

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au, Stephen Humphry@det wa edu, and Stephen Humphry. "Maintaining a Common Arbitrary Unit in Social Measurement." Murdoch University, 2005. http://wwwlib.murdoch.edu.au/adt/browse/view/adt-MU20050830.95143.

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In educational assessment, it is common to equate test forms in order to draw comparisons between different populations of students. The process of test equating presents a number of challenges, many of which relate inherently to the problem of maintaining a common unit and origin. In order to develop a general theoretical approach to maintaining a common unit and origin in the measurement of quantitative attributes, the role of the unit is carefully examined. Classical physics is explicitly adopted as the guiding paradigm during the investigations throughout the dissertation. Accordingly,

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Humphrey, Stephen. "Maintaining a common arbitrary unit in social measurement /." Access via Murdoch University Digital Theses Project, 2005. http://wwwlib.murdoch.edu.au/adt/browse/view/adt-MU20050830.95143.

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Mishra, Chetan. "Optimal Substation Coverage for Phasor Measurement Unit Installations." Thesis, Virginia Tech, 2012. http://hdl.handle.net/10919/78056.

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The PMU has been found to carry great deal of value for applications in the wide area monitoring of power systems. Historically, deployment of these devices has been limited by the prohibitive cost of the device itself. Therefore, the objective of the conventional optimal PMU placement problem is to find the minimum number devices, which if carefully placed throughout the network, either maximize observability or completely observe subject to different constraints. Now due to improved technology and digital relays serving a dual use as relay & PMU, the cost of the PMU device itself is not the

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Humphry, Stephen. "Maintaining a common arbitrary unit in social measurement." Thesis, Humphry, Stephen (2005) Maintaining a common arbitrary unit in social measurement. PhD thesis, Murdoch University, 2005. https://researchrepository.murdoch.edu.au/id/eprint/82/.

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In educational assessment, it is common to equate test forms in order to draw comparisons between different populations of students. The process of test equating presents a number of challenges, many of which relate inherently to the problem of maintaining a common unit and origin. In order to develop a general theoretical approach to maintaining a common unit and origin in the measurement of quantitative attributes, the role of the unit is carefully examined. Classical physics is explicitly adopted as the guiding paradigm during the investigations throughout the dissertation. Accordingly,

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Humphry, Stephen. "Maintaining a common arbitrary unit in social measurement." Humphry, Stephen (2005) Maintaining a common arbitrary unit in social measurement. PhD thesis, Murdoch University, 2005. http://researchrepository.murdoch.edu.au/82/.

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In educational assessment, it is common to equate test forms in order to draw comparisons between different populations of students. The process of test equating presents a number of challenges, many of which relate inherently to the problem of maintaining a common unit and origin. In order to develop a general theoretical approach to maintaining a common unit and origin in the measurement of quantitative attributes, the role of the unit is carefully examined. Classical physics is explicitly adopted as the guiding paradigm during the investigations throughout the dissertation. Accordingly,

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10

Kopfinger, André, and Daniel Ahlsén. "Identification of absolute orientation using inertial measurement unit." Thesis, Högskolan i Halmstad, Akademin för informationsteknologi, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:hh:diva-39713.

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Because of the limitation of GPS indoors there is a demand for alternative methods to accurately determine both position and orientation. Previous attempts at positional tracking has required an infrastructure of hardware and sensors to provide the path of an object or person. This is not a mobile solution to a mobile problem. This project aims to answer the question if it is possible to use an Inertial measurement unit sensor for this application. It will also create a prototype device that will demonstrate the capabilities of the proposed method. The goal of the project is to reach an accura

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Silva, João Carlos de Paiva Coelho Machado. "The impact of the measurement unit of unit price on consumer preference and choice." Master's thesis, NSBE - UNL, 2010. http://hdl.handle.net/10362/10289.

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A Work Project, presented as part of the requirements for the Award of a Masters Degree in Management from the NOVA – School of Business and Economics<br>This project studies how variations in the measurement unit of unit price affect consumers’ preference and choice. Particularly, we contend that consumers’ relative preference for the same two option is different when options’ unit price is presented in a large measurement unit – per kg; than when options’ unit price is presented in a small measurement unit – per 100g. Moreover, consumers’ choice will shift more to lower unit price optio

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Reddy, Goutam. "Using a gimbal to calibrate an inertial measurement unit." Thesis, Massachusetts Institute of Technology, 2005. http://hdl.handle.net/1721.1/37077.

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Thesis (M. Eng.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 2005.<br>Includes bibliographical references (p. 79-82).<br>In this thesis, an inertial measurement unit (IMU) consisting of 3 accelerometers and 3 rate gyros is created using off-the-shelf sensors from STMicro and Analog Devices. A novel technique for calibrating the orientation, position, scaling and offset of each of the sensors on the IMU is developed. A gimbal consisting of three concentric rings, with rotary encoders measuring the rotation between rings is designed. The IMU is f

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Ng, YongKad. "An essay on unit root tests and measurement error." [Lincoln, Neb. : University of Nebraska-Lincoln], 2004. http://www.unl.edu/libr/Dissertations/2004/NgDis.pdf.

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Han, Yi Chiew. "Human Gait Analysis Using Inertial Measurement Unit for Rehabilitation." Thesis, Curtin University, 2019. http://hdl.handle.net/20.500.11937/78046.

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The main contribution is an Inertial Measurement Units (IMUs) based system that classifies a selection of gait anomalies to assist the clinicians in diagnosis of walking disorders. The developed 3-D angle and stride length estimation algorithms have been validated against gold standard Vicon optical motion capture system. The proposed IMU-based gait phase detection method has also been validated against force sensors. Additionally, IMU and video synchronization provides numerical data to the clinicians for visual inspection.

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Mccamley, John Douglas <1960&gt. "Gait analysis using a single wearable inertial measurement unit." Doctoral thesis, Alma Mater Studiorum - Università di Bologna, 2013. http://amsdottorato.unibo.it/5604/1/McCamley_John_tesi.pdf.

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Procedures for quantitative walking analysis include the assessment of body segment movements within defined gait cycles. Recently, methods to track human body motion using inertial measurement units have been suggested. It is not known if these techniques can be readily transferred to clinical measurement situations. This work investigates the aspects necessary for one inertial measurement unit mounted on the lower back to track orientation, and determine spatio-temporal features of gait outside the confines of a conventional gait laboratory. Apparent limitations of different inertial senso

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Mccamley, John Douglas <1960&gt. "Gait analysis using a single wearable inertial measurement unit." Doctoral thesis, Alma Mater Studiorum - Università di Bologna, 2013. http://amsdottorato.unibo.it/5604/.

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Procedures for quantitative walking analysis include the assessment of body segment movements within defined gait cycles. Recently, methods to track human body motion using inertial measurement units have been suggested. It is not known if these techniques can be readily transferred to clinical measurement situations. This work investigates the aspects necessary for one inertial measurement unit mounted on the lower back to track orientation, and determine spatio-temporal features of gait outside the confines of a conventional gait laboratory. Apparent limitations of different inertial senso

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Sukhavasi, Vijay Krishna. "Steady State Testing and Analysis of a Phasor Measurement Unit." Thesis, Virginia Tech, 2011. http://hdl.handle.net/10919/46328.

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Phasor Measurement Units (PMUs) have been instrumental in building a reliable and robust Power System. Recent blackouts have increased the importance of PMUs and PMUs from various manufacturers are being installed in the in large quantities in the North American Grid. The interoperability and accuracy of these PMUs is important to obtain full benefit of the wide area monitoring systems. With the large number of installed PMUs it has become necessary to validate their performance and understand the limitations of each model. A test system was built by NIST in cooperation with NASPI to test for

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Jah, Moriba Kemessia. "Mars aerobraking spacecraft state estimation by processing inertial measurement unit data." Diss., Connect to online resource, 2005. http://wwwlib.umi.com/dissertations/fullcit/3178333.

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Portell, Jeffrey R. "Calibration and validation of inertial measurement unit for wave resolving drifters." Thesis, Monterey, California: Naval Postgraduate School, 2013. http://hdl.handle.net/10945/38994.

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Approved for public release; distribution is unlimited.<br>We examine the performance of the Yost Engineering Incorporated 3-Space Sensor Data-Logging (TSS-DL) for use in wave resolving drifters (WRDs) that collect ocean surface wave data. We create a surface wave orbital motion simulator to test the TSS-DL in a controlled, laboratory setting at the Naval Postgraduate School. Tests are conducted in three different configurations at five frequencies within the swell and wind-sea bands. Results from the tests show that the TSS-DL can accurately resolve the vertical simulated wave motions to with

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Thompson, Gordon A. (Gordon Alexander). "Inertial measurement unit calibration using Full Information Maximum Likelihood Optimal Filtering." Thesis, Massachusetts Institute of Technology, 2005. http://hdl.handle.net/1721.1/34136.

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Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Aeronautics and Astronautics, 2005.<br>Includes bibliographical references (p. 105-108).<br>The robustness of Full Information Maximum Likelihood Optimal Filtering (FIMLOF) for inertial measurement unit (IMU) calibration in high-g centrifuge environments is considered. FIMLOF uses an approximate Newton's Method to identify Kalman Filter parameters such as process and measurement noise intensities. Normally, IMU process noise intensities and measurement standard deviations are determined by laboratory testing in a 1-g field. In this

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Unlusoy, Ozlem. "Reliability Analysis Process And Reliabilty Improvement Of An Inertial Measurement Unit (imu)." Master's thesis, METU, 2010. http://etd.lib.metu.edu.tr/upload/12612387/index.pdf.

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Reliability is one of the most critical performance measures of guided missile systems. It is directly related to missile mission success. In order to have a high reliability value, reliability analysis should be carried out at all phases of the system design. Carrying out reliability analysis at all the phases of system design helps the designer to make reliability related design decisions in time and update the system design. In this study, reliability analysis process performed during the conceptual design phase of a Medium Range Anti-Tank Missile System Inertial Measurement Unit (IMU) was

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Jayawardene, Kanishka. "A human head motion monitoring system based on an inertial measurement unit." Thesis, McGill University, 2012. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=110713.

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This thesis describes the design and implementation of a human head motion monitoring system based on an inertial measurement unit. The system is to be used by physicians to characterize the head motion when engaging in day-to-day activities before and after corrective surgery is performed on the vestibular system. This system is also to be used by personnel in sports medicine to compare performance between athletes and by coaches to help athletes improve their techniques.The design is implemented using an inertial measurement unit with an accelerometer, a gyroscope, and a magnetometer. Data c

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Santiago, Alexandre Alves. "Extended Kalman filtering applied to a full accelerometer strapdown inertial measurement unit." Thesis, Massachusetts Institute of Technology, 1992. http://hdl.handle.net/1721.1/12940.

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Venable, Donald T. "Implementation of a 3D Imaging Sensor Aided Inertial Measurement Unit Navigation System." Ohio University / OhioLINK, 2008. http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1218764810.

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Ghassempour, Aghamolki Hossein. "Phasor Measurement Unit Data-based States and Parameters Estimation in Power System." Scholar Commons, 2016. http://scholarcommons.usf.edu/etd/6505.

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The dissertation research investigates estimating of power system static and dynamic states (e.g. rotor angle, rotor speed, mechanical power, voltage magnitude, voltage phase angle, mechanical reference point) as well as identification of synchronous generator parameters. The research has two focuses: i. Synchronous generator dynamic model states and parameters estimation using real-time PMU data. ii.Integrate PMU data and conventional measurements to carry out static state estimation. The first part of the work focuses on Phasor Measurement Unit (PMU) data-based synchronous generator states a

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CASTELLO, PAOLO. "Algorithms for the synchrophasor measurement in steady-state and dynamic conditions." Doctoral thesis, Università degli Studi di Cagliari, 2014. http://hdl.handle.net/11584/266420.

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Phasor measurement units (PMUs) are becoming one of the key issues of power network monitoring. They have to be able to perform accurate estimations of current and voltage signals either under steady-state or dynamic conditions. The first part of this PhD thesis analyses the impact of the phasor models on the estimation accuracy, focuses on algorithms proposed in the literature for the estimation of phasors and studies their performance under several different conditions. On the basis of the results of this analysis, in the second part of this thesis an innovative approach to improve the per

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Smith, Austin. "Agreement Level of Running Temporal Measurements, Kinetics, and Force-Time Curves Calculated from Inertial Measurement Units." Digital Commons @ East Tennessee State University, 2021. https://dc.etsu.edu/etd/3861.

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Inertial measurement units (IMUs) and wearable sensors have enabled athlete monitoring and research to become more ecologically valid due to their small size and low cost. IMUs and accelerometers that are placed on the body close to the point of impact and that record at sufficiently high frequencies have demonstrated the highest validity when measuring temporal gait event moments such as ground contact time (GCT) and flight time (FT) as well as peak forces (PF) during upright running. While the use of IMUs has increased in the sport performance and athlete monitoring realm, the potential of t

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Filho, Nelson Whitaker. "Aircraft Distance Measurement System." International Foundation for Telemetering, 1994. http://hdl.handle.net/10150/611674.

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International Telemetering Conference Proceedings / October 17-20, 1994 / Town & Country Hotel and Conference Center, San Diego, California<br>The Aircraft Distance Measurement System (ADMS) could be used in Flight Test application to determine the aircraft position and speed during takeoff, landing and acceleration-stop performance test within runway limits using a microwave link.

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Vanegas, Morris Dwight. "Characterization of inertial measurement unit placement on the human body upon repeated donnings." Thesis, Massachusetts Institute of Technology, 2016. http://hdl.handle.net/1721.1/105638.

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Thesis: S.M. in Aerospace Engineering, Massachusetts Institute of Technology, Department of Aeronautics and Astronautics, 2016.<br>Thesis: S.M., Massachusetts Institute of Technology, Department of Mechanical Engineering, 2016.<br>Cataloged from PDF version of thesis.<br>Includes bibliographical references (pages 131-135).<br>Given projections of an increase in the number of consumers wearing sensors in the upcoming years coupled with NASA's technological roadmap for future human space exploration, there is a need to understand and appropriately incorporate the variability of humans during the

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Salzberger, Thomas, and Monika Koller. "The direction of the response scale matters - accounting for the unit of measurement." Emerald, 2019. http://dx.doi.org/10.1108/EJM-08-2017-0539.

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Purpose: Psychometric analyses of self-administered questionnaire data tend to focus on items and instruments as a whole. The purpose of this paper is to investigate the functioning of the response scale and its impact on measurement precision. In terms of the response scale direction, existing evidence is mixed and inconclusive. Design/methodology/Approach: Three experiments are conducted to examine the functioning of response scales of different direction, ranging from agree to disagree versus from disagree to agree. The response scale direction effect is exemplified by two different l

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Retty, Hema A. "Evaluation and Standardizing of Phasor Data Concentrators." Thesis, Virginia Tech, 2013. http://hdl.handle.net/10919/32064.

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The power grid is interconnected in many ways; so that when disturbances occur in a small region, their effects can be seen across large areas causing major blackouts. In order to isolate the fault, measurements taken at different times throughout the blackout need to be collected and analyzed. With each measurement device having its own time source, time alignment can be a quite tedious and lengthy process. The need for a new time synchronized measurement device has arrived. The Phasor Measurement Units (PMU) is not only GPS time synchronized, but it also takes measurements as voltage and cur

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Brunette, Zene. "Balanced scorecard development of a strategic business unit / Zene Brunette." Thesis, North-West University, 2010. http://hdl.handle.net/10394/4586.

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Research confirms that strategic planning is essential for the improvement of business performance in both small and large organisations. Organisations around the globe all follow similar tactics, namely to attempt to execute a strategy to differentiate themselves from their competitors. A popular instrument used to support the strategic–management process in organisations is the Balanced Scorecard (BSC). The BSC is a popular performance–management framework strongly associated with managing the implementation of strategic plans. There is a difference between known performance–management progr

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Chen, Jiaxiong. "Power System State Estimation Using Phasor Measurement Units." UKnowledge, 2013. http://uknowledge.uky.edu/ece_etds/35.

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State estimation is widely used as a tool to evaluate the real time power system prevailing conditions. State estimation algorithms could suffer divergence under stressed system conditions. This dissertation first investigates impacts of variations of load levels and topology errors on the convergence property of the commonly used weighted least square (WLS) state estimator. The influence of topology errors on the condition number of the gain matrix in the state estimator is also analyzed. The minimum singular value of gain matrix is proposed to measure the distance between the operating point

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Bukowski, Edward F., and T. Gordon Brown. "Design and Implementation of an Inertial Measurement Unit (IMU) for Small Diameter Ballistic Applications." International Foundation for Telemetering, 2009. http://hdl.handle.net/10150/606005.

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ITC/USA 2009 Conference Proceedings / The Forty-Fifth Annual International Telemetering Conference and Technical Exhibition / October 26-29, 2009 / Riviera Hotel & Convention Center, Las Vegas, Nevada<br>The US Army Research Laboratory currently uses a variety of ballistic diagnostic systems for gathering aerodynamic information pertaining to gun launched munitions. Sensors are a vital component of each of these diagnostic systems. Since multiple sensors are commonly used, they are often configured into a sensor suite or inertial measurement unit (IMU). In order to gather information on smalle

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Gow, Joel A. "Testing the HG1700 inertial measurement unit for implementation into the AIRES unmanned underwater vehicle." Thesis, Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 2005. http://library.nps.navy.mil/uhtbin/hyperion/05Jun%5FGow.pdf.

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Thesis (M.S. in Applied Science (Physical Oceanography))--Naval Postgraduate School, June 2005.<br>Thesis Advisor(s): Anthony J. Healey, Edward B. Thornton. Includes bibliographical references (p. 49). Also available online.

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Islam, Md Shariful. "Indoor positioning through integration of optical angles of arrival with an inertial measurement unit." Thesis, University of British Columbia, 2012. http://hdl.handle.net/2429/43261.

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A novel indoor positioning solution is proposed in this work. An inertial navigation system (INS) is integrated with optical angle of arrival (OAOA) measurements to yield a smoother, more accurate, and robust positioning solution for indoor environments. An extended Kalman filter (EKF) is used to integrate the INS and OAOA measurements. Four different algorithms are proposed for the novel indoor positioning solution by INS/OAOA integration. An error state Kalman filter is used for implementing all four algorithms. In previous work, magnetometer error estimation was not included in the EKF stat

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COSTA, MARCOS SOARES MOURA. "QUADROTORS AERIAL VEHICLES CONTROL: KALMAN FILTERS USED TO MINIMIZE ERRORS ON INERTIAL MEASUREMENT UNIT." PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO, 2014. http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=35672@1.

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PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO<br>COORDENAÇÃO DE APERFEIÇOAMENTO DO PESSOAL DE ENSINO SUPERIOR<br>PROGRAMA DE EXCELENCIA ACADEMICA<br>Quadrirrotores são veículos aéreos que possuem quatro rotores fixos e orientados na direção vertical. Devido à sua simplicidade mecânica frente aos helicópteros tradicionais, os mesmos têm se tornado cada vez mais populares nos meios de pesquisa, militares e, mais recentemente, industriais. Essa topologia de veículo data do início do século XX mas o desenvolvimento em escala só foi possível após a recente evolução e miniaturização dos sistema

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Kiran, Sai. "An inertial measurement unit interface and processing system synchronized to global positioning system time." Ohio University / OhioLINK, 1998. http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1176489175.

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Nakamura, Hideo. "Development of a measurement system for motor unit activity by surface EMG signal decomposition." Kyoto University, 2005. http://hdl.handle.net/2433/144960.

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Kyoto University (京都大学)<br>0048<br>新制・課程博士<br>博士(人間・環境学)<br>甲第11661号<br>人博第267号<br>新制||人||67(附属図書館)<br>16||158(吉田南総合図書館)<br>23304<br>UT51-2005-D410<br>京都大学大学院人間･環境学研究科文化･地域環境学専攻<br>(主査)教授森谷敏夫, 教授田口貞善, 助教授小田伸午<br>学位規則第4条第1項該当

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Henning, Roline. "An investigation into the internal structure of the unit performance construct as measured by the performance index (PI)." Thesis, Stellenbosch : Stellenbosch University, 2002. http://hdl.handle.net/10019.1/52679.

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Assignment (MA)--University of Stellenbosch, 2002<br>ENGLISH ABSTRACT: The responsibility for the performance of any organisational unit ultimately lies with the leadership of the unit. Given this perceived pivotal role of leadership in work unit performance, the ultimate objective is to capture the nature of the presumed relationship between leadership and unit performance in a comprehensive structural model. To validate such a leadership model, however, requires an explanation of the manner in which the unit performance dimensions affect each other. Spangenberg and Theron (2002b) deve

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Kersey, Philip Michael. "Applications of PMUSimulator in PDC Testing." Thesis, Virginia Tech, 2012. http://hdl.handle.net/10919/32090.

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With the development of the power grid into an automated system, phasor measurement units and phasor data concentrators are essential for real time control of the system. PMUs are time synchronized throughout the power system and take sample measurements in very small windows of time. Phasor Data Concentrators accept PMU data and time align the data so that a snapshot of the power system can be viewed in real time. It is unfeasible to possess enough real PMUs to thoroughly test PDCs, thus a Real Time PMU Simulator is desired. It is possible to implement a UNIX based PMU simulator that can e

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Quint, Ryan David. "Practical Implementation of a Security-Dependability Adaptive Voting Scheme Using Decision Trees." Thesis, Virginia Tech, 2011. http://hdl.handle.net/10919/35667.

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Todayâ s electric power system is operated under increasingly stressed conditions. As electrical demand increases, the existing grid is operated closer to its stable operating limits while maintaining high reliability of electric power delivery to its customers. Protective schemes are designed to account for pressures towards unstable operation, but there is always a tradeoff between security and dependability of this protection. Adaptive relaying schemes that can change or modify their operation based on prevailing system conditions are an example of a protective scheme increasing reliabi

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Erismis, Mehmet Akif. "Mems Accelerometers And Gyroscopes For Inertial Measurement Units." Master's thesis, METU, 2004. http://etd.lib.metu.edu.tr/upload/12605331/index.pdf.

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This thesis reports the development of micromachined accelerometers and gyroscopes that can be used for micromachined inertial measurement units (IMUs). Micromachined IMUs started to appear in the market in the past decade as low cost, moderate performance alternative in many inertial applications including military, industrial, medical, and consumer applications. In the framework of this thesis, a number of accelerometers and gyroscopes have been developed in three different fabrication processes, and the operation of these fabricated devices is verified with extensive tests. In addition,

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Löfstrand, Sebastian, and Lundvall Jonas Fredén. "Utvärdering av Movesense för användning vid biomekaniska studier." Thesis, KTH, Hälsoinformatik och logistik, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-252802.

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Det finns ett behov av att kunna nyttja ett användarvänligt system för interaktion med kroppsnära sensorer vid undervisning och forskning vid skolan för kemi, bioteknologi och hälsa vid Kungliga Tekniska Högskolan. Ansvariga vid utbildningen har därför gett i uppdrag att utreda om ett specifikt sensorsystem, Movesense, kan utgöra grunden för ett användarvänligt verktyg för att kunna studera biomekaniska rörelser inom utbildning och forskning. En förstudie har genomförts för att undersöka sensorsystemets potential. En systemprototyp har utvecklats för konfiguration av sensorsystemet och hämtnin

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Hurtgen, Michaël. "Wide-area state estimation using synchronized phasor measurement units." Doctoral thesis, Universite Libre de Bruxelles, 2011. http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/209924.

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State estimation is an important tool for power system monitoring and the present study involves integrating phasor measurement units in the state estimation process. Based on measurements taken throughout the network, the role of a state estimator is to estimate the state variables of the power system while checking that these estimates are consistent with the measurement set. In the case of power system state estimation, the state variables are the voltage phasors at each network bus.\\<p><p>The classical state estimator currently used is based on SCADA (Supervisory Control and Data Acquisit

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Pershad, Sathish Kumar. "An investigation into the use of electrode mass measurement to optimise an electrostatic precipitator unit." Thesis, Port Elizabeth Technikon, 2001. http://hdl.handle.net/10948/66.

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Electrostatic precipitators (ESP’s) can be simply described as particle collection devices and service a wide variety of industries. This particle collection can either be classed as a cleansing or product recovery (or both) process. They can be found in fossil fueled power generation plant (municipal incinerators, iron and steel industries (sinter plants, coke ovens), non ferrous industries, rock products (cement, lime), chemical and petrochemical (detarrers, de-oilers) They have been around for approximately 70 years and their fundamental principle of operation has not changed much during th

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Villeneuve, Hubert. "Height Estimation of a Blimp Unmanned Aerial Vehicle Using Inertial Measurement Unit and Infrared Camera." Thesis, Université d'Ottawa / University of Ottawa, 2017. http://hdl.handle.net/10393/36635.

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Increasing demands in areas such as security, surveillance, search and rescue, and communication, has promoted the research and development of unmanned aerial vehicles (UAVs) as such technologies can replace manned flights in dangerous or unfavorable conditions. Lighter-than-air UAVs such as blimps can carry higher payloads and can stay longer in the air compared to typical heavier-than-air UAVs such as aeroplanes or quadrotors. One purpose of this thesis is to develop a sensor suite basis for estimating the position and orientation of a blimp UAV in development with respect to a reference poi

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Tundo, Marco D. "Development of a Human Activity Recognition System Using Inertial Measurement Unit Sensors on a Smartphone." Thèse, Université d'Ottawa / University of Ottawa, 2014. http://hdl.handle.net/10393/30963.

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Monitoring an individual’s mobility with a modern smartphone can have a profound impact on rehabilitation in the community. The thesis objective was to develop and evaluate a third-generation Wearable Mobility Monitoring System (WMMS) that uses features from inertial measurement units to categorize activities and determine user changes-of-state in daily living environments. A custom suite of MATLAB® software tools were developed to assess the previous WMMS iteration and aid in third-generation WMMS algorithm construction and evaluation. A rotation matrix was developed to orient smartphone acc

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Leccadito, Matthew. "A Kalman Filter Based Attitude Heading Reference System Using a Low Cost Inertial Measurement Unit." VCU Scholars Compass, 2013. http://scholarscompass.vcu.edu/etd/3189.

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This paper describes, the development of a sensor fusion algorithm-based Kalman lter ar- chitecture, in combination with a low cost Inertial Measurement Unit (IMU) for an Attitude Heading Reference System (AHRS). A low cost IMU takes advantage of the use of MEMS technology enabling cheap, compact, low grade sensors. The use of low cost IMUs is primar- ily targeted towards Unmanned Aerial Vehicle (UAV) applications due to the requirements for small package size, light weight, and low energy consumption. The high dynamics nature of smaller airframes, coupled with the typical vibration induced n

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KUMAR, JITENDER. "EFFECT OF PHASOR MEASUREMENT UNIT." Thesis, 2016. http://dspace.dtu.ac.in:8080/jspui/handle/repository/14561.

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The thesis will scrutinize the effect of the Phasor Measurement Units (PMU) on the problem associated in analyzing the state estimation for power system. Initially, the conventional state estimation on a power system bus will be discussed. Then, the significance effect of adding PMU measurements on the solution obtained from state estimation with their accuracy will be studied. Finally, the consequences of PMU system on the accuracy of different bus system will be discussed. The first objective of the thesis is to develop the linear formulation for the problem associated with the state estimat

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