Готові списки джерел за темами / Electronic Performance Tracking Systems (EPTS)

Добірка наукової літератури з теми "Electronic Performance Tracking Systems (EPTS)"

Автор: Grafiati

Опубліковано: 15 вересня 2021

Оновлено: 18 лютого 2022

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Статті в журналах з теми "Electronic Performance Tracking Systems (EPTS)":

Linke, Daniel, Daniel Link, and Martin Lames. "Validation of electronic performance and tracking systems EPTS under field conditions." PLOS ONE 13, no. 7 (July 23, 2018): e0199519. http://dx.doi.org/10.1371/journal.pone.0199519.

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Rico-González, Markel, Asier Los Arcos, Daniel Rojas-Valverde, Filipe M. Clemente, and José Pino-Ortega. "A Survey to Assess the Quality of the Data Obtained by Radio-Frequency Technologies and Microelectromechanical Systems to Measure External Workload and Collective Behavior Variables in Team Sports." Sensors 20, no. 8 (April 16, 2020): 2271. http://dx.doi.org/10.3390/s20082271.

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Electronic performance and tracking systems (EPTS) and microelectromechanical systems (MEMS) allow the measurement of training load (TL) and collective behavior in team sports so that match performance can be optimized. Despite the frequent use of radio-frequency (RF) technology (i.e., global positioning navigation systems (GNSS/global positioning systems (GPS)) and, local position systems (LPS)) and MEMS in sports research, there is no protocol that must be followed, nor are there any set guidelines for evaluating the quality of the data collection process in studies. Thus, this study aims to suggest a survey based on previously used protocols to evaluate the quality of data recorded by RF technology and MEMS in team sports. A quality check sheet was proposed considering 13 general criteria items. Four additional items for GNSS/GPS, eight additional items for LPS, and five items for MEMS were suggested. This information for evaluating the quality of the data collection process should be reported in the methods sections of future studies.

Kim, Hyunsung, Jaehee Kim, Young-Seok Kim, Mijung Kim, and Youngjoo Lee. "Energy-Efficient Wearable EPTS Device Using On-Device DCNN Processing for Football Activity Classification." Sensors 20, no. 21 (October 22, 2020): 6004. http://dx.doi.org/10.3390/s20216004.

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This paper presents an energy-optimized electronic performance tracking system (EPTS) device for analyzing the athletic movements of football players. We first develop a tiny battery-operated wearable device that can be attached to the backside of field players. In order to analyze the strategic performance, the proposed wearable EPTS device utilizes the GNSS-based positioning solution, the IMU-based movement sensing system, and the real-time data acquisition protocol. As the life-time of the EPTS device is in general limited due to the energy-hungry GNSS sensing operations, for the energy-efficient solution extending the operating time, in this work, we newly develop the advanced optimization methods that can reduce the number of GNSS accesses without degrading the data quality. The proposed method basically identifies football activities during the match time, and the sampling rate of the GNSS module is dynamically relaxed when the player performs static movements. A novel deep convolution neural network (DCNN) is newly developed to provide the accurate classification of human activities, and various compression techniques are applied to reduce the model size of the DCNN algorithm, allowing the on-device DCNN processing even at the memory-limited EPTS device. Experimental results show that the proposed DCNN-assisted sensing control can reduce the active power by 28%, consequently extending the life-time of the EPTS device more than 1.3 times.

Potsaid, Benjamin, John Ting-Yung Wen, Mark Unrath, David Watt, and Mehmet Alpay. "High Performance Motion Tracking Control for Electronic Manufacturing." Journal of Dynamic Systems, Measurement, and Control 129, no. 6 (March 2, 2007): 767–76. http://dx.doi.org/10.1115/1.2789467.

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Motion control requirements in electronic manufacturing demand both higher speeds and greater precision to accommodate continuously shrinking part/feature sizes and higher densities. However, improving both performance criteria simultaneously is difficult because of resonances that are inherent to the underlying positioning systems. This paper presents an experimental study of a feedforward controller that was designed for a point-to-point motion control system on a modern and state of the art laser processing system for electronics manufacturing. We systematically apply model identification, inverse dynamics control, iterative refinement (to address modeling inaccuracies), and adaptive least mean square to achieve high speed trajectory tracking. The key innovations lie in using the identified model to generate the gradient descent used in the iterative learning control, encoding the result from the learning control in a finite impulse response filter and adapting the finite impulse response coefficients during operation using the least-mean-square update based on position, velocity, and acceleration feedforward signals. Experimental results are provided to show the efficacy of the proposed approach, a variation of which has been implemented on the production machine.

Fujioka, Hisaya, Chung-Yao Kao, Stefan Almér, and Ulf Jönsson. "Robust tracking with H∞ performance for PWM systems." Automatica 45, no. 8 (August 2009): 1808–18. http://dx.doi.org/10.1016/j.automatica.2009.03.026.

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Kim, K. S. "Analysis of Optical Data Storage Systems—Tracking Performance With Eccentricity." IEEE Transactions on Industrial Electronics 52, no. 4 (August 2005): 1056–62. http://dx.doi.org/10.1109/tie.2005.851685.

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Berger, Thomas. "Tracking with prescribed performance for linear non-minimum phase systems." Automatica 115 (May 2020): 108909. http://dx.doi.org/10.1016/j.automatica.2020.108909.

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Sun, Xin-xiang, Jie Wu, Xi-Sheng Zhan, and Tao Han. "Optimal modified tracking performance for MIMO systems under bandwidth constraint." ISA Transactions 62 (May 2016): 145–53. http://dx.doi.org/10.1016/j.isatra.2016.01.018.

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Woodyatt, A. R., M. M. Seron, J. S. Freudenberg, and R. H. Middleton. "Cheap control tracking performance for non-right-invertible systems." International Journal of Robust and Nonlinear Control 12, no. 15 (October 16, 2002): 1253–73. http://dx.doi.org/10.1002/rnc.671.

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Tosi, Daniele, Massimo Olivero, and Guido Perrone. "Performance analysis of peak tracking techniques for fiber Bragg grating interrogation systems." Journal of Microwaves, Optoelectronics and Electromagnetic Applications 11, no. 2 (December 2012): 252–62. http://dx.doi.org/10.1590/s2179-10742012000200003.

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Дисертації з теми "Electronic Performance Tracking Systems (EPTS)":

Bitilis, Pavlos. "Electronic Performance And Tracking Systems (EPTS) : Perceptions, Benefits and Challenges of Professional Football Athletes and Training Staff." Thesis, Linnéuniversitetet, Institutionen för informatik (IK), 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:lnu:diva-106888.

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Personal Informatics (PI) are information systems that allow people to process activities with the usage of information technology, aiming to produce informational products (data) either for themselves or for others. Technologies that enable PI are becoming increasingly popular, assisting people in collecting personally relevant information about their body and their behaviour. In sports industry nowadays, a great variety of PI wearable tools offer support to athletes and training staff to improve their performance. An example of such tool is the Electronic Performance and Tracking Systems (EPTS), which are a combination of hardware and software that facilitates the collection, storage, analysis and management of professional athletes’ fitness and health data. Although significant and broadly used, EPTS have not yet received much attention from researchers and, thus, understudied. Therefore, the master’s thesis explores the perceptions of professional football athletes and training staff regarding the use of EPTS in their everyday training and work. Furthermore, the master’s thesis research explores the benefits and challenges that professional football athletes and training staff experience when using EPTS in their everyday training and work. The master’s thesis study adopts the interpretive paradigm and qualitative ethnographic approach. The research data was collectedthrough direct observations in the field and semi-structured interviews from Greek professional football athletes and Greek training staff that use wearable EPTS in their everyday training and work and was analysed thematically. A theoretical framework, which is built upon relevant literature from the informatics field and along with the theory of sensemaking, is used to understand, interpret and discuss the research findings. The research outcome of the master’s thesis shows that communication is at the core of EPTS enabling football players and training staff to improve individual and team performance. Organizing of every day starts and ends with EPTS analysis and evaluation and better organized and daily evaluated football methodology appears as key benefit for the club. Coaches and trainers are now more data driven and accurate and analysts and trainers that conduct analysisof the data provided by EPTS are new members of the training staff. Evidence provided by EPTS build trust between staff and players and in the training staff. Visualization tools for presenting insights need to be further improved with the addition of in-field monitors and 3D presentations. Furthermore, it is important for training staff members to have ethical and consistent strategy on how data derived from EPTS are used on how data are communicated. The research complements previous research on personal informatics and adjusts them to elite team sport context and adds to the theory of sensemaking regarding how users make sense of PI tools that are related with their everyday routines at work. In addition, it offers football training staff members a model for efficient use of EPTS technology into the everyday football practices and a model of sustainable use aiming the overall improvement of team performance.

Mohror, Kathryn Marie. "Scalable event tracking on high-end parallel systems." PDXScholar, 2010. https://pdxscholar.library.pdx.edu/open_access_etds/2811.

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Accurate performance analysis of high end systems requires event-based traces to correctly identify the root cause of a number of the complex performance problems that arise on these highly parallel systems. These high-end architectures contain tens to hundreds of thousands of processors, pushing application scalability challenges to new heights. Unfortunately, the collection of event-based data presents scalability challenges itself: the large volume of collected data increases tool overhead, and results in data files that are difficult to store and analyze. Our solution to these problems is a new measurement technique called trace profiling that collects the information needed to diagnose performance problems that traditionally require traces, but at a greatly reduced data volume. The trace profiling technique reduces the amount of data measured and stored by capitalizing on the repeated behavior of programs, and on the similarity of the behavior and performance of parallel processes in an application run. Trace profiling is a hybrid between profiling and tracing, collecting summary information about the event patterns in an application run. Because the data has already been classified into behavior categories, we can present reduced, partially analyzed performance data to the user, highlighting the performance behaviors that comprised most of the execution time.

Petersson, Markus. "Performance Assessment of Massive MIMO Systems for Positioning and Tracking of Vehicles in Open Highways." Thesis, Linköpings universitet, Kommunikationssystem, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-138839.

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The next generation of mobile networks (5G) is currently being standardized, and massive MIMO (Multiple-Input-Multiple-Output) is a strong candidate to be part of this standard. Other than providing higher data rates and lower latency, high accuracy positioning is also required. In this thesis, we evaluate the achievable performance of positioning using massive MIMO systems in open highway scenarios. Relevant theory from sensor array signal processing and Bayesian filtering is presented, and is used in a simulation environment on large antenna arrays representing massive MIMO base stations. Positioning is done by utilizing the uplink pilot reference signals, where the Direction of Arrival (DOA) of the pilot signal is estimated, and then used for position estimation. Estimation of the DOA is done by both a maximum-likelihood method and by using an Extended Kalman Filter (EKF). A positioning error of less than 8 m is achieved with absolute certainty when the vehicle is less than 300 m from the base station. It is also concluded that this result could be improved by using more sophisticated filtering algorithms.

Linke, Daniel [Verfasser], Martin [Akademischer Betreuer] Lames, Martin [Gutachter] Lames, Arnold [Gutachter] Baca, and Jonathan [Gutachter] Wheat. "Validation of Electronic Performance Tracking Systems : Methodology, Design & Applications / Daniel Linke ; Gutachter: Martin Lames, Arnold Baca, Jonathan Wheat ; Betreuer: Martin Lames." München : Universitätsbibliothek der TU München, 2019. http://d-nb.info/1201481678/34.

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Garner, Robin S. "A Comparative Analysis of Data Collection Systems Used in Radiography Educational Programs and the Role Mobile Electronic Devices Play." Digital Commons @ East Tennessee State University, 2015. https://dc.etsu.edu/etd/2592.

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Each radiography program has a system to collect important data from didactic and clinical settings in order to accurately assess the progress and success of students, provide the needed student intervention, and provide accreditation agencies with appropriate documentation that demonstrates student success in reaching program learning outcomes. The purpose of this research study was to determine the method of data collection and documentation used by radiography programs to evaluate student progress and to examine if MEDs play a role in evaluating and documenting student skills at the point of care. The majority of radiography programs in this study were using paper methods for data collection and program directors reported value in using MEDs in clinical education but revealed that barriers still exist and will need to be addressed in order to increase their usage in clinical education.

Dhume, Pinakin. "Large scale feature extraction and tracking." 2007. http://hdl.rutgers.edu/1782.2/rucore10001600001.ETD.15832.

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Частини книг з теми "Electronic Performance Tracking Systems (EPTS)":

Pino-Ortega, José, and Markel Rico-González. "Standardization of Electronic Performance and Tracking Systems." In The Use of Applied Technology in Team Sport, 3–10. New York: Routledge, 2021. http://dx.doi.org/10.4324/9781003157007-2.

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Hossain, M. Jahangir, H. R. Pota, and M. A. Mahmud. "Impacts of Wind Generators on the Dynamic Performance of Power Systems." In Advances in Electronic Government, Digital Divide, and Regional Development, 189–208. IGI Global, 2012. http://dx.doi.org/10.4018/978-1-4666-1625-7.ch010.

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The complexity of power systems has been increased in recent years due to increased utilization of the existing transmission lines using FACTS (Flexible AC Transmission System) devices and for changing the generation mechanism with more intermittent sources and lower inertial units. This changing nature of power systems has considerable effect on its dynamic behavior resulting from power swings, dynamic interaction between different power system devices, and less synchronized coupling. This chapter will analyze the changing nature of power systems and its dynamic behavior to identify critical issues that limit the large-scale integration of wind generators and FACTS devices. The studies in this chapter are conducted on a 16-Machine, five area New England and New York power system. In this chapter, the study of dynamic behavior includes modal analysis, Power-Voltage (PV) analysis, eigenvalue tracking, and dynamic simulations to investigate the dynamic behavior of a complex power system under both small and large disturbances.

CHEBABHI, Ali. "Foreword." In Improved Indirect Power Control (IDPC) of Wind Energy Conversion Systems (WECS), i. BENTHAM SCIENCE PUBLISHERS, 2019. http://dx.doi.org/10.2174/9789811412677119010001.

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During the past decade, the installed wind power capacity in the world has been increasing more than 30%. Wind energy conversion system (WECSs) based on the doubly-fed induction generator (DFIG) dominated the wind power generations due to the outstanding advantages, including small converters rating around 30% of the generator rating, lower converter cost. Due to the non-linearity of wind system, the DFIG power control presents a big challenge especially under wind-speed variation and parameter’s sensibility. To overcome these major problems; an improved IDPC (Indirect Power Control); based on PID “Proportional-Integral-Derivative” controller, was proposed instead the conventional one (based on PI), in order to enhance the wind-system performances in terms; power error, tracking power and overshoot. Unfortunately using robustness tests (based on severe DFIG’s parameters changement); the wind-system offers non-satisfactory simulation results which were illustrated by the very bad power tracking and very big overshoot (> 50%). In this context; adaptive, robust & intelligent controllers were proposed to control direct & quadrature currents (Ird & Irq) under MPPT (Maximum Power Point Tracking) strategy to main the unity power factor (PF≈1) by keeping the reactive power at zero level. In this case, the new IDPC based on intelligent controllers offered an excellent wind-system performance especially using robustness tests, which offered a big improvement especially using Type-1 Fuzzy Logic Controller (T1-FLC), Type-2 Fuzzy Logic Control (T2-FLC; is the New class of fuzzy logic) & Neuro-Fuzzy Logic (NFC). In this sense, I think that this edited book is an important contribution to help students already in mastery of the basis of power electronic circuits and control systems theory to achieve these pedagogical goals. The proposed book describes with easy manner the modeling & control of Wind-turbine DFIG in order to control the stator powers using different topologies of robust, adaptive and intelligent controllers. The book present numerous intelligent control techniques that help in the control design of the DFIG wind-system (WT). The textbook “Improved Indirect Power Control (IDPC) of Wind Energy Conversion Systems (WECS)” proposes a collection of concepts, organized in a synergic manner such that to ease comprehension of the WT control design. The book’s contribution goes towards completing the already existing literature by offering a useful integration of control techniques, worthy to be read, understood and employed in the various WT applications. Please enjoy reading this book.

Pino-Ortega, José, and Markel Rico-González. "Review of Ultra-Wide Band in Team Sports." In Innovations in Ultra-Wideband Technologies. IntechOpen, 2021. http://dx.doi.org/10.5772/intechopen.94591.

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The use of valid, accurate and reliable systems is fundamental to warrant a high-quality data collection and interpretation. In 2015, FIFA created a department of Electronic Performance and Tracking systems, collecting under this name the more used tracking systems in team sport setting: high-definition cameras, Global Positioning Systems, and Local Positioning Systems. To date, LPS systems proved to be valid and accurate in determining the position and estimating distances and speeds. However, it is hypothesized that between LPS, ultra-wide band (UWB) is the most promising technology for the future. Thus, this chapter was aimed to make an update about UWB technology in sport: the FIFA’s regulation, manufacturer that provide this technology, the research articles that assessed validity and reliability of UWB technology, and the criteria standard for the use of this technology.

Wang, Audrey P., David Pryce, and Phillip Gough. "Getting to the Right Patient at the Right Time: An Interoperable Mobile App to Track the ED Journey in Hospital." In Healthier Lives, Digitally Enabled. IOS Press, 2021. http://dx.doi.org/10.3233/shti210015.

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The current legacy ICT framework structures in healthcare are often siloed and do not allow information to flow easily between business analytics and clinical systems, affecting critical decision making.Western Sydney Local Health District (WSLHD) has numerous electronic database systems for business analytics including tracking individual patients waiting for treatment in the emergency department (ED). Administrators of hospital business data report ED performance measures in a weekly static feedback report to clinical and executive staff due to current legacy systems and manual resource allocation processes. The remit of the project was to prototype a system that could integrate data sources from the current QlikSense Dashboard into an interoperable mobile app with the future intention of direct impact on clinical care decision making for the emergency department. A series of meetings between business analytics unit and clinical staff were used to inform a set of requirements for information workflow systems integration to be used on the project. Stimulated patient data that matched typical data feeds from the system was used to develop a prototype interoperable HL7 messaging mobile app that would report waiting patients in their triage categories in near real time. This working protype with synthetic scenarios and data will inform a future deployable production system with information for the patient journey from the ED waiting room into available hospital beds. As most applications are either designed for business analytics or clinical workflows, integrating information data sources into one mobile application that could meet the needs of both clinical and business performance was novel and integral. This proof of concept project successfully integrated the information systems necessary for both purposes and informs future requirements for an interoperable and deployable cross-platform mobile app.

Тези доповідей конференцій з теми "Electronic Performance Tracking Systems (EPTS)":

Oliveira Rodriguez, Luis A., and Roberto Garcia Fernandez. "Low cost EPTS (Electronic Performance & Tracking System) development using IoT devices." In 2021 16th Iberian Conference on Information Systems and Technologies (CISTI). IEEE, 2021. http://dx.doi.org/10.23919/cisti52073.2021.9476415.

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Desurmont, X., J. B. Hayet, C. Machy, J. F. Delaigle, and J. F. Macq. "On the performance evaluation of tracking systems using multiple pan-tilt-zoom cameras." In Electronic Imaging 2007, edited by J. Angelo Beraldin, Fabio Remondino, and Mark R. Shortis. SPIE, 2007. http://dx.doi.org/10.1117/12.704344.

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Sadineni, Suresh B., Jonathan D. Realmuto, and Robert F. Boehm. "An Integrated Performance Monitoring and Solar Tracking System for Utility Scale PV Plants." In ASME 2011 Power Conference collocated with JSME ICOPE 2011. ASMEDC, 2011. http://dx.doi.org/10.1115/power2011-55243.

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Monitoring of photovoltaic (PV) systems is essential for achieving reliable and, maximum yield from solar PV plants. This paper proposes PV plant hierarchy, and a novel near real-time monitoring system combined with a solar tracking controller for utility scale PV installations. Currently, most PV installations employ monitoring at the inverter level, lacking sufficient resolution. Furthermore, the solar tracking and performance monitoring systems are isolated from one another. The proposed design increases monitoring resolution, allowing PV malfunctions to be addressed immediately, effectively optimizing a plant’s power generation. Moreover, the tracker control and monitoring are fused into an inclusive hardware design. Incorporating state-of-the-art electronic sensors, coupled with wireless communication protocols, the resulting system is a robust, accurate sensor and control network. Accessible through the internet, the system will provide a way to monitor and control multiple installations from a centralized location. The collected data enables efficient maintenance scheduling, and long-term performance analysis for utility scale PV plants. The developed system includes string level power measurement sensors, sun tracking actuators, a network of microprocessors and a central processing unit (CPU) for application in utility-scale central inverter PV plants. The basic designs and feasibility of the system are presented in this paper.

Abu-Mallouh, Mohammed, Brian Surgenor, and Sasan Taghizadeh. "Hybrid Control of a Pneumatic Gantry Robot for Contour Tracking: Proportional Pressure Versus Proportional Flow Control." In ASME 2009 Dynamic Systems and Control Conference. ASMEDC, 2009. http://dx.doi.org/10.1115/dscc2009-2665.

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The application of a pneumatic gantry robot to contour tracking is examined. A hybrid controller is structured to control the contact force and the tangential velocity, simultaneously. In a previous study, experimental contour tracking results for the robot were obtained with electronic proportional pressure control (PPC) valves. The results demonstrated the potential of pneumatic actuation for contour tracking applications. In another study it was found that improvement in performance was limited by system lag and Coulomb friction. A neural network (NN) compensator was developed to counter both effects. Simulation results demonstrated the effectiveness of the NN compensator. Although improvement in performance with NN compensation was significant, this was offset by the requirement for substantive design effort. This paper shows experimentally that equally significant improvement can be achieved by switching from PPC valves to proportional flow control (PFC) valves. The PFC approach requires less design effort.

Onol, A. O., U. Sancar, A. Onat, and S. Yesilyurt. "Model Predictive Control for Energy Maximization of Small Vertical Axis Wind Turbines." In ASME 2015 Dynamic Systems and Control Conference. American Society of Mechanical Engineers, 2015. http://dx.doi.org/10.1115/dscc2015-9891.

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In this paper, a model predictive control (MPC) approach is presented to maximize the energy generated by a small vertical axis wind turbine (VAWT) subject to current and voltage constraints of electrical and power electronic components. Our method manipulates a load coefficient and optimizes the control trajectory over a prediction horizon such that a cost function that measures the deviation from the maximum available energy and the violation of current and voltage constraints is minimized. Simplified models for the VAWT and a permanent magnet generator have been used. A number of simulations have been carried out to demonstrate the performance of the proposed method at step and oscillatory wind conditions. Furthermore, impacts of the constraints on energy generation have been investigated. Moreover, the performance of the MPC has been compared with a typical maximum power point tracking algorithm in order to show that maximizing the instantaneous power does not mean maximizing the energy; and simulation results have shown that the MPC outperforms the maximum power point tracking algorithm in terms of generated energy by allowing deviations from the maximum power instantaneously for future gains in energy generation.

Wagner, Sebastian, Gunter Nitzsche, and Robert Huber. "Advanced Automatic Steering Systems for Multiple Articulated Road Vehicles." In ASME 2013 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/imece2013-62630.

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This article describes a novel automatic steering system for a 30.73m long double articulated bus equipped with three independent steer-by-wire axles. Two model-based control design approaches are proposed. The first approach uses a kinetic vehicle model to design a train-like guidance system and a force-canceling that avoids excessive mechanical stress in the joints and the chassis. While the first approach requires high computational efforts, the second approach utilizes a kinematic model to design an extended Ackermann-steering system that performs well on available electronic control units (ECU). Multi-body-system (MBS) simulations show that both approaches offer high tracking performance and low mechanical stress in the chassis of the vehicle. Furthermore, road tests with the prototype AutoTram® Extra Grand confirm the simulation results.

Onol, A. O., U. Sancar, A. Onat, and S. Yesilyurt. "Modeling, Hardware-in-the-Loop Simulations and Control Design for Small-Scale Vertical Axis Wind Turbines." In ASME 2016 Dynamic Systems and Control Conference. American Society of Mechanical Engineers, 2016. http://dx.doi.org/10.1115/dscc2016-9855.

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In this study, we present a methodology for the assessment of overall performance for vertical axis wind turbines (VAWT) with straight blades. Salient features of our approach include a validated computational fluid dynamics (CFD) model and a hardware-in-the loop (HIL) test-bed. The two-dimensional, time-dependent CFD model uses the k-ε turbulence model and is coupled with the dynamics of the rotor involving friction and generator torques. The power coefficient curve for the rotor is obtained from the CFD simulations by varying the generator torque over time, and then used in the HIL test-bed that consists of an electrical motor, a gearbox, a permanent magnet synchronous generator, and an electronic load. In this setup, the VAWT rotor is mimicked by the electrical motor based on a power coefficient curve obtained from CFD simulations. Effects of the electrical conversion and control design on the overall performance of the VAWT are studied in the HIL setup. Additionally, a simple non-linear control (SNC) algorithm that mimics a model predictive controller and two different adaptations of the maximum power point tracking (MPPT) algorithm with fixed and variable step-sizes are designed and implemented in HIL simulations. According to results, the generator has a profound effect on the overall power output and the efficiency of the turbine; and the SNC and MPPT algorithms perform satisfactorily under step wind conditions.

Giberti, Hermes, Andrea Zanoni, Marco Mauri, and Massimo Gammino. "Preliminary Study on Automated Concrete Bridge Inspection." In ASME 2014 12th Biennial Conference on Engineering Systems Design and Analysis. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/esda2014-20189.

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This work focuses on the development of a methodology for the complete reconstruction of the 3D geometry of a concrete bridge. 3D scanning technology was selected as the most apt to the task as it provides very detailed geometrical informations. A dedicated carriage system for a compact and lightweight laser scanner has been designed and built as a first prototype to be used on laboratory as well as future on-field tests. A first assessment of the design constraints has been carried out, based on the general goal of implementing a system able to be used with existing inspection vehicles with minimal modifications. The specific electronic system for management and control of the carriage system and the management of the associated tracking system has been also designed and realized. Some preliminary tests have been performed at Politecnico di Milano University campus to assess the viability and analyze the performance of the early design choices.

Amini, Mohammad Reza, Mahdi Shahbakhti, and Selina Pan. "MIMO First and Second Order Discrete Sliding Mode Controls of Uncertain Linear Systems Under Implementation Imprecisions." In ASME 2017 Dynamic Systems and Control Conference. American Society of Mechanical Engineers, 2017. http://dx.doi.org/10.1115/dscc2017-5010.

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The performance of a conventional model-based controller significantly depends on the accuracy of the modeled dynamics. The model of a plant’s dynamics is subjected to errors in estimating the numerical values of the physical parameters, and variations over operating environment conditions and time. These errors and variations in the parameters of a model are the major sources of uncertainty within the controller structure. Digital implementation of controller software on an actual electronic control unit (ECU) introduces another layer of uncertainty at the controller inputs/outputs. The implementation uncertainties are mostly due to data sampling and quantization via the analog-to-digital conversion (ADC) unit. The failure to address the model and ADC uncertainties during the early stages of a controller design cycle results in a costly and time consuming verification and validation (V&V) process. In this paper, new formulations of the first and second order discrete sliding mode controllers (DSMC) are presented for a general class of uncertain linear systems. The knowledge of the ADC imprecisions is incorporated into the proposed DSMCs via an online ADC uncertainty prediction mechanism to improve the controller robustness characteristics. Moreover, the DSMCs are equipped with adaptation laws to remove two different types of modeling uncertainties (multiplicative and additive) from the parameters of the linear system model. The proposed adaptive DSMCs are evaluated on a DC motor speed control problem in real-time using a processor-in-the-loop (PIL) setup with an actual ECU. The results show that the proposed SISO and MIMO second order DSMCs improve the conventional SISO first order DSMC tracking performance by 69% and 84%, respectively. Moreover, the proposed adaptation mechanism is able to remove the uncertainties in the model by up to 90%.

Borquist, E., G. Smith, and L. Weiss. "Exploration of Phase Change Within a Capillary Flow Driven Square Micro-Channel Using Lattice Boltzmann Method and Experimental Boundary Conditions." In ASME 2015 13th International Conference on Nanochannels, Microchannels, and Minichannels collocated with the ASME 2015 International Technical Conference and Exhibition on Packaging and Integration of Electronic and Photonic Microsystems. American Society of Mechanical Engineers, 2015. http://dx.doi.org/10.1115/icnmm2015-48482.

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Previously published research examined the overall efficiency of heat transfer through a copper plated micro-channel heat exchanger. However, since the device is sealed and composed entirely of copper, understanding the phase change, temperature field, and density field of the working fluid is difficult empirically. Given that the efficiency was shown to be greatly increased by the working fluid phase change, this understanding within the device is important to designing devices of greater efficiency and different working fluids. One method of determining device and component performance is numerical modeling of the system. Fluids that undergo phase change have long frustrated those attempting to successfully numerically model systems with acceptable stability. Over the past twenty years, the lattice Boltzmann method (LBM) has transformed the simulation of multicomponent and multiphase flows. Particularly with multiphase flows, the LBM “naturally” morphs the phase change interface throughout the model without excessive computational complexity. The relative ease with which LBM has been applied to some multicomponent/multiphase systems inspired the use of LBM to track phase change within the previously recorded experimental boundary conditions for the copper plated heat exchanger. In this paper, the LBM was used to simulate the evaporation and condensation of HFE-7200 within a capillary flow driven square micro-channel heat exchanger (MHE). All initial and boundary conditions for the simulation are exactly those conditions at which the empirical data was measured. These include temperature and heat flux measurements entering and leaving the MHE. Working fluid parameters and characteristics were given by the manufacturer or measured during experimental work. Once the lattice size, initial conditions, and boundary conditions were input into MATLAB®, the simulations indicated that the working fluid was successfully evaporating and condensing which, coupled with the capillary driven flow, allowed the system to provide excellent heat transfer characteristics without the use of any external work mechanism. Results indicated successive instances of stratified flow along the channel length. Micro-channel flow occurring due to capillary action instead of external work mechanisms made differences in flow patterns negligible. Coupled with the experimentally measured thermal characteristics, this allowed simulations to develop a regular pattern of phase interface tracking. The agreement of multiple simulations with previously recorded experimental data has yielded a system where transport properties are understood and recognized as the primary reasons for such excellent energy transport in the device.