Relevant bibliographies by topics / Software Digital Phase LockedLoop

Contents

  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers
  6. Reports

Academic literature on the topic 'Software Digital Phase LockedLoop'

Author: Grafiati
Published: 3 June 2025
Last updated: 20 July 2025

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Journal articles on the topic "Software Digital Phase LockedLoop"

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Radhapuram, Saichandrateja, Takuya Yoshihara, and Toshimasa Matsuoka. "Design and Emulation of All-Digital Phase-Locked Loop on FPGA." Electronics 8, no. 11 (2019): 1307. http://dx.doi.org/10.3390/electronics8111307.

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This paper demonstrates the design and implementation of an all-digital phase-lockedloop (ADPLL) on Field Programmable Gate Array (FPGA). It is useful as an emulation techniqueto show the feasibility and effectiveness of the ADPLL in the early design stage. A D-S modulator(DSM, Delta-Sigma Modulator)-based digitally controlled ring-oscillator (ring-DCO) design, whichis fully synthesizable in Verilog HDL, is presented. This ring-DCO has fully digital control andfractional tuning range using the DSM. The ring-DCO does not contain library-specific cells andcan be synthesized independently of the standard cell library, thus making the design portable andreducing the time required to fit for different semiconductor processes considerably. Implementedring-DCO has a wide tuning range and high-frequency resolution which meet the demands ofsystem-level integration. The ADPLL implemented in this work has the characteristics of designflexibility, a wide range of working frequency from 120 MHz to 300 MHz, and a fast responsefor achieving a locked state. The proposed ADPLL can be easily ported to different processes ina short time. The design adaptation cost is limited to adjustment of loop parameters in the code.Thus, it can reduce the design time and design complexity of the ADPLL, making it very suitable forSystem-on-Chip (SoC) applications.
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Biswas, B. N., A. K. Bhattacharya, P. Pal, D. Mondal, S. K. Ray, and R. De. "New software-controlled digital phase-locked loop." Electronics Letters 25, no. 16 (1989): 1097. http://dx.doi.org/10.1049/el:19890734.

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Shivakumar, Shailesh Kumar. "Software Estimation Framework for Digital Enhancements and Maintenance Projects." International Journal of Project Management and Productivity Assessment 8, no. 2 (2020): 81–96. http://dx.doi.org/10.4018/ijpmpa.2020070105.

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Software enhancements and the maintenance phase is generally the crucial phase of a software application lifecycle. The enhancements and maintenance consume about 20% of the overall software lifecycle effort. Enhancement and maintenance phase of modern digital projects involves many activities such as incident management, application enhancements, generic maintenance, quality improvements such as automation, preventive maintenance, continuous improvement, and such. State-of the-art estimation models and frameworks fall short of factoring all the dynamics involved in the enhancements and maintenance phase. The article proposes a digital project maintenance estimation framework to estimate various activities of a digital maintenance project. The proposed estimation framework provides comprehensive coverage of maintenance activities including incident management, application enhancements, generic maintenance, and quality improvements. The proposed estimation framework was used to predict effort estimate of 5 digital maintenance projects with MMRE of 0.255 and predicted (0.3) of 80%.
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van Beveren, V., D. Real, T. Chiarusi, et al. "Embedded software developments in KM3NeT phase I." Journal of Instrumentation 16, no. 12 (2021): C12008. http://dx.doi.org/10.1088/1748-0221/16/12/c12008.

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Abstract The KM3NeT collaboration has already produced more than one thousand acquisition boards, used for building two deep-sea neutrino detectors at the bottom of the Mediterranean Sea, with the aim of instrumenting a volume of several cubic kilometers with light sensors to detect the Cherenkov radiation produced in neutrino interactions. The so-called digital optical modules, house the PMTs and the acquisition and control electronics of the module, the central logic board, which includes a Xilinx FPGA and embedded soft processor. The present work presents the architecture and functionalities of the software embedded in the soft processor of the central logic board.
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Narayanaswamy, P. R. Iyer. "Computer-Aided Testing of a Digital Phase Angle Meter." International Journal of Electrical Engineering & Education 34, no. 1 (1997): 81–86. http://dx.doi.org/10.1177/002072099703400108.

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This paper describes the computer aided testing of a digital phase angle meter which can be used for the measurement of phase angle in degrees between two 50 Hz a.c. signals, using the software package MICROCAP IV.
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Li, Liang, Zong Tao Chi, Yun Jing Wang, and Zheng Wei Qu. "A Digital Compensation Device Based on Multiplying Digital-to-Analog Converter." Applied Mechanics and Materials 475-476 (December 2013): 1629–32. http://dx.doi.org/10.4028/www.scientific.net/amm.475-476.1629.

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This paper presents a digital compensation device based on two multiplying digital-to-analog converters (M-DAC) whose reference voltages are the same standard AC signals. The output of two M-DACs, which is controlled by software coding, are used as the in-phase and the quadrature component through a reverse proportional amplifier and a derivation circuit respectively. Then the four-quadrant compensative signal can be got after the in-phase and quadrature components have been synthesized. The resolution of digital compensation device is determined by the M-DAC, and usually can be reached to 10ppm of the reference voltage. Measurement results show that the linearity of the presented digital compensation device is about 3.7×10-5.
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van Straten, W., and M. Bailes. "DSPSR: Digital Signal Processing Software for Pulsar Astronomy." Publications of the Astronomical Society of Australia 28, no. 1 (2011): 1–14. http://dx.doi.org/10.1071/as10021.

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Abstractdspsr is a high-performance, open-source, object-oriented, digital signal processing software library and application suite for use in radio pulsar astronomy. Written primarily in C++, the library implements an extensive range of modular algorithms that can optionally exploit both multiple-core processors and general-purpose graphics processing units. After over a decade of research and development, dspsr is now stable and in widespread use in the community. This paper presents a detailed description of its functionality, justification of major design decisions, analysis of phase-coherent dispersion removal algorithms, and demonstration of performance on some contemporary microprocessor architectures.
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Sergeyev, V. V., V. A. Fedoseev, and D. A. Shapiro. "PHASE DIGITAL WATERMARKING METHOD FOR VIDEO COPYRIGHT PROTECTION." Автометрия 58, no. 5 (2022): 3–13. http://dx.doi.org/10.15372/aut20220501.

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Zhang, Chaozhu, Jinan Han, and Ke Li. "Design and Implementation of Hybrid CORDIC Algorithm Based on Phase Rotation Estimation for NCO." Scientific World Journal 2014 (2014): 1–8. http://dx.doi.org/10.1155/2014/897381.

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The numerical controlled oscillator has wide application in radar, digital receiver, and software radio system. Firstly, this paper introduces the traditional CORDIC algorithm. Then in order to improve computing speed and save resources, this paper proposes a kind of hybrid CORDIC algorithm based on phase rotation estimation applied in numerical controlled oscillator (NCO). Through estimating the direction of part phase rotation, the algorithm reduces part phase rotation and add-subtract unit, so that it decreases delay. Furthermore, the paper simulates and implements the numerical controlled oscillator by Quartus II software and Modelsim software. Finally, simulation results indicate that the improvement over traditional CORDIC algorithm is achieved in terms of ease of computation, resource utilization, and computing speed/delay while maintaining the precision. It is suitable for high speed and precision digital modulation and demodulation.
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Mandal, Amritakar, Rajesh Mishra, and M. R. Nagar. "Implementation of complex digital PLL for phase detection in software defined radar." Radioelectronics and Communications Systems 59, no. 4 (2016): 151–62. http://dx.doi.org/10.3103/s0735272716040014.

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Dissertations / Theses on the topic "Software Digital Phase LockedLoop"

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Kippenberger, Roger Miles. "On Real Time Digital Phase Locked Loop Implementation with Application to Timing Recovery." Thesis, University of Canterbury. Electrical and Computer Engineering, 2006. http://hdl.handle.net/10092/1146.

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In digital communication systems symbol timing recovery is of fundamental importance. The accuracy in estimation of symbol timing has a direct effect on received data error rates. The primary objective of this thesis is to implement a practical Digital Phase Locked Loop capable of accurate synchronisation of symbols suffering channel corruption typical of modern mobile communications. This thesis describes an all-software implementation of a Digital Phase Locked in a real-time system. A timing error detection (TED) algorithms optimally implemented into a Digital Signal Processor. A real-time transmitter and receiver system is implemented in order to measure performance when the received signal is corrupted by both Additive White Gaussian Noise and Flat Fading. The Timing Error Detection algorithm implemented is a discrete time maximum likelihood one known as FFML1, developed at Canterbury University. FFML1 along with other components of the Digital Phase Locked loop are implemented entirely in software, using Motorola 56321 assembly language.
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Berhanu, Samuel, and Kamal Neupane. "Digital Radio Implementation for NASA S-Band Space Network Transceiver." International Foundation for Telemetering, 2012. http://hdl.handle.net/10150/581843.

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The system diagrams for the digital radio compatible with NASA's S-Band Space Network operating from 2025.8 - 2117.9 MHz (forward link) to 2200 - 2300 MHz (return link) are presented. The digital radio implementation includes binary phase shift keying (BPSK), quadrature phase shift keying (QPSK) and staggered quadrature phase shift keying (SQPSK). We have derived the system requirements for these modulation schemes from the Space Network User Guide (SNUG) and thereafter, derived system diagrams for the communication links. The designed system diagrams for the transceiver were implemented using Simulink models and USRP2 platform.
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Eriksson, Viktor. "Extraction of radio frequency quality metric from digital video broadcast streams by cable using software defined radio." Thesis, Linköpings universitet, Kommunikationssystem, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-94187.

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The purpose of this master thesis was to investigate how effiecient the extractionof radiofrequency quality metrics from digital video broadcast (DVB) streamscan become using software defined radio. Software defined radio (SDR) is a fairlynew technology that offers you the possibility of very flexible receivers and transmitters where it is possible to upgrade the modulation and demodulation overtime. Agama is interested in SDR for use in the Agama Analyzer, a widely deployedmonitoring probe running on top of standard services. Using SDR, Agama coulduse that in all deployments, such as DVB by cable/terrestrial/satellite (DVBC/T/S), which would simplify logistics. This thesis is an implementation of a SDR to be able to receive DVB-C. TheSDR must perform a number of adaptive algorithms in order to prevent the received symbols from being significantly different from the transmitted ones. Themain parts of the SDR include timing recovery, carrier recovery and equalization.Timing recovery performs synchronization between the transmitted and receivedsymbols and the carrier recovery performs synchronization between the carrierwave of the transmitter and the local oscillator in the receiver. The thesis discusses various methods to perform the different types of synchronizations andequalizations in order to find the most suitable methods.
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Zengin, Yasin. "Development Of A Dsp-fpga-based Resolver-to-digital Converter For Stabilized Gun Platforms." Master's thesis, METU, 2010. http://etd.lib.metu.edu.tr/upload/2/12611925/index.pdf.

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Resolver, due to its reliability and durability, has been used for the aim of shaft position sensing of military rotary systems such as tank turrets and gun stabilization platforms for decades. Ready-to-use resolver-to-digital converter integrated circuits which convert the resolver signals into position and speed measurements are utilized in servo systems most commonly. However, the ready-to-use integrated circuits increase the dependency of the servo system to hardware components which in turn decrease the efficiency and flexibility of the servo system for changing system structures such as for changing resolver carrier frequency or changing position and speed sensors. The proposed solution to increase the efficiency and flexibility of the servo system is a software-based resolver-to-digital converter which does not require aforesaid special hardware components and presents a complete software-based solution for the conversion. The proposed software-based resolver-to-digital converter makes use of common programmable hardware v components, that is, FPGA and DSP which form the heart of the servo controller technology in recent years. The proposed structure for the conversion has three components. The first component is the signal conditioner which minimizes the disturbances coming from the resolver signals as harmonic distortions and noise. The second component, the phase-sensitive demodulator, as the name implies, is responsible for phase-sensitive demodulation of resolver signals. The third component is the estimator filter. In order to determine the optimal estimator filter, five different estimator filters with the aforesaid two components are implemented in ASELSAN&rsquo<br>s stabilized gun system STAMP and they are compared in terms of both estimation performance and computational complexity. The implemented filters include nonlinear observer type filter which is already proposed in the literature for resolver conversion, tracking differentiator adapted to resolver conversion and kalman filters adapted to resolver conversion in different forms such as linear kalman filter, extended kalman filter and unscented kalman filter. At the end of the study, stability and sensitivity analyses are also performed for the proposed system.
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Kováč, Marek. "Digitální AM/FM vysílač." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2014. http://www.nusl.cz/ntk/nusl-220601.

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This master thesis is focused on the theoretical description and practical implementation of software defined transmitter. The main aim of this thesis was made the prototype of software defined transmitter in FM band. Theoretical part is determined to description of basic parts of equipment and working principles to understand the basic principle of digital transmitters and define the appropriate component base for construction. Discussed are used types of A/D and D/A converters, blocks of digital signal processing and the roles, which these components performs. The second part is focused practical. Specified are suitable types of components and block diagram is proposed for following electrical connection and printed circuit board in Eagle program as a plug-in modul for developmental platform Arduino. The main point is program, which sets and controls the transmitter. Next important part is impedance match and antenna tuning, which is explain in practical part of thesis. The result is prototype of software defined transmitter compatible with Arduino Uno platform.
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Books on the topic "Software Digital Phase LockedLoop"

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L, Di Vito Ben, and Langley Research Center, eds. Formal design and verification of a reliable computing platform for real-time control: Phase 2 results. National Aeronautics and Space Administration, Langley Research Center, 1992.

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Butler, Ricky W. Formal design and verification of a reliable computing platform for real-time control: Phase 3 results. National Aeronautics and Space Administration, Langley Research Center, 1994.

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Book chapters on the topic "Software Digital Phase LockedLoop"

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Chernoyarov, Oleg, Alexey Glushkov, Kaung Myat San, Vladimir Litvinenko, and Yuliya Litvinenko. "Algorithms and Devices for Non-coherent Digital Processing of the Multi-level Amplitude Differential Phase-Shift Keyed Signals." In Software Engineering Application in Informatics. Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-90318-3_61.

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Pohlkötter, Fabian J., Dominik Straubinger, Alexander M. Kuhn, Christian Imgrund, and William Tekouo. "Unlocking the Potential of Digital Twins." In Advances in Automotive Production Technology – Towards Software-Defined Manufacturing and Resilient Supply Chains. Springer International Publishing, 2023. http://dx.doi.org/10.1007/978-3-031-27933-1_18.

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AbstractIncreasing competitive pressure is confronting the automotive industry with major challenges. As a result, conventional reactive maintenance is being transformed into predictive maintenance. In this context, wearing and aging effects no longer lead to plant failure since they are predicted at an earlier stage based on comprehensive data analysis.Furthermore, the evolution towards Smart Factory has given rise to virtual commissioning in the planning phase of production plants. In this process, a Hardware-in-the-Loop (HiL) system combines the real controls (e.g., PLC) and a virtual model of the plant. These HiL systems are used to simulate commissioning activities in advance, thus saving time and money during actual commissioning. The resulting complex virtual models are not further used in the series production.This paper builds upon virtual commissioning models to develop a Digital Twin, which provides inputs for predictive maintenance. The resulting approach is a methodology for building a hybrid predictive maintenance system. A hybrid prediction model combines the advantages of data-driven and physical models. Data-driven models analyse and predict wearing patterns based on real machine data. Physical models are used to reproduce the behaviour of a system. From the simulation of the hybrid model, additional insights for the predictions can be derived.The conceptual methodology for a hybrid predictive maintenance system is validated by the successful implementation in a bottleneck process of the electric engine production for an automotive manufacturer. Ultimately, an outlook on further possible applications of the hybrid model is presented.
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Kaselow, Andreas, Dimitri Petrik, and Sven Feja. "Exploring the Success Factors for a Launch of an Algorithmic Consulting Platform." In Agile Processes in Software Engineering and Extreme Programming – Workshops. Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-58858-8_7.

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Abstract Even the rather traditional consulting industry is not spared from digitization. Digital platforms are known to foster convergence and generativity. For the consulting industry, digital platforms offer the potential to win new customer groups who have not previously purchased consulting services before. If digital platforms for the mediation of consulting services are established by incumbent consulting companies, the new platform-based business models for the consulting market will appear. Since network effects fuel platforms, the launch phase of a platform is a serious challenge. In this paper, we examine the launch of a digital platform for the algorithmic consulting (AC) approach, due to its promising market potential. In order to research the adaptability of digital platforms for AC consulting, we perform a qualitative study of electronic documents on the actions of three successful crowdsourcing platforms. The preliminary results comprise 14 success factors for the platform launch that will be validated in a follow-up practical application. The open nature of platform design in the areas of customer access, cooperation with other platforms, interfaces, and communication appeared to be particularly important for a successful platform launch. All identified success factors can be applied to AC services and the consulting market in the future.
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Särestöniemi, Mariella, Daljeet Singh, Charline Heredia, Juha Nikkinen, Mikael von und zu Fraunberg, and Teemu Myllylä. "Digital Twins for Development of Microwave-Based Brain Tumor Detection." In Communications in Computer and Information Science. Springer Nature Switzerland, 2024. http://dx.doi.org/10.1007/978-3-031-59080-1_18.

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AbstractDigital twins for different healthcare applications are currently being studied actively since they could revolutionize research on customized and personalized healthcare and enable realistic evaluations of new medical devices and applications in early phase. This paper presents a study on the development of digital twins aiming to be utilized for the development of microwave technique-based brain tumor detection. Realistic anatomical models of the digital twins were designed based on magnetic resonance images (MRI) scanned from the brain with brain tumor. These twins aim to correspond to the human brain and brain tumor in terms of size, shape, and tissue dielectric properties. Furthermore, developed digital twins include both phantom models for measurement emulation as well as corresponding simulation models designed using electromagnetic simulation software. By using the developed digital twins, our aim is to evaluate microwave-based sensing technique for brain tumor detection. Evaluations were carried out using flexible ultrawideband (UWB) antennas which would be beneficial for practical solutions. Our simulation and emulation results show that microwave technique with flexible antennas has high potential for brain tumor detection.
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Slowik, Adam. "Application of Geometric Differential Evolution Algorithm to Design Minimal Phase Digital Filters with Atypical Characteristics for Their Hardware or Software Implementation." In Artificial Intelligence and Soft Computing. Springer Berlin Heidelberg, 2013. http://dx.doi.org/10.1007/978-3-642-38610-7_7.

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Zhen, Xiaoxu, Qi Zhao, and Rui Gu. "Research on the application of CPS intelligent construction system from the perspective of digital transformation of construction industry - Based on the case of phase II project of South China University of Technology International Campus." In 2022 2nd International Conference on Management Science and Software Engineering (ICMSSE 2022). Atlantis Press International BV, 2023. http://dx.doi.org/10.2991/978-94-6463-056-5_86.

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Motta, Martina, Giovanni Maria Conti, Giulia Lo Scocco, and Rachele Didero. "Craftmanship and Digitalization in the Italian Knitwear Industry. A Paradigm Shift for the Narrative of Made in Italy." In Springer Series in Design and Innovation. Springer Nature Switzerland, 2023. http://dx.doi.org/10.1007/978-3-031-49811-4_67.

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AbstractKnitwear is a consolidated industry in Italy and, at the same time, a typical expression of the Made in Italy paradigm linked to the ideas of craftsmanship. While, on the one hand, knitwear is associated with the idea of craft and manufacturing traditions, on the other hand, it is nowadays produced by numerical control machines (CNC) where the technological contribution and the level of automation are very relevant. The convergence of physical and digital environments, at the heart of the Fashion Industry 4.0 debate, is an established feature of knitwear design practice.In the contemporary industrial scenario, knitted items are produced on digitally programmed machines through sophisticated software, and the manual contribution of the individual operator during the knitting phase is reduced to a minimum. In the light of these premises, this contribution questions the opportunity and value of the integration of digital technologies in the storytelling of traditional manufacturing without losing the power to evoke Made in Italy’s values such as quality, aesthetic refinement, and exclusivity. To analyze these issues, the authors report the case study of SMT – Società Manifattura Tessile, a leading knitting company where the technological presence equals that of traditional manufacturing craftmanship, keeping both elements at balance. The case study suggests the importance of the contemporary knitting craftsman to increasingly develop communication skills to make the relationship between technology and manufacturing explicit and possibly smoothly blend it with the Made in Italy archetypes.
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Pavan, Alberto, Vittorio Caffi, Alessandro Valra, et al. "Development of BIM Management System." In Innovative Tools and Methods Using BIM for an Efficient Renovation in Buildings. Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-031-04670-4_3.

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AbstractWith BS 1192:2007 and even more so with BS PAS 1199-2:2013 and 1192-3:2014, the concept of Common Data Environment (CDE) of the order (project, construction or management that is). Originating from a standard dedicated to design (BS 1192:2007) and although its concept has been extended to information management in general: Capex (strategy, project, construction: PAS 1192-2) and Opex (exercise: PAS 1192-3), the CDE, as it is understood today in common practice, is still very much affected by the original link with the design and the design phase (and in particular the design in the new building). All this according to an information flow that is still very linear and sequential: client, designer, builder, manager, user; more than circular, as the so-called BIM methodology would like. The risk, therefore, is that the commercial software market is affected by this CDE approach, which is also useful for the very rich real estate market of the emerging economies, neglecting the construction market of the more consolidated economies (Europe for before), very built up, and aimed more at housing quality, sustainability, reuse, and renewal of the existing heritage rather than the new one. It is consequently necessary to define new information flows and a new type of information management environment (CDE) for the phases of use, conservation, and renovation of buildings for the European market. The need arises for a specific BIM Management System (BIMMS, overcoming the classic CDE) for asset management and their enhancement that collects information from the buildings themselves and its users (Digital Twins, IoT, sensors, etc.). A new CDE / BIMMS that uses semantics and open dialogue, via API, with multiple Tools rather than acting as a repository of files and models. BIMMS is a new concept of CDE created for the operation/renovation phases in mature real estate markets (such as the European one).
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"The Digital Phase Review Process." In The Digital Guide to Software Development. Elsevier, 1989. http://dx.doi.org/10.1016/b978-1-55558-035-3.50004-5.

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Salamah, Salamah, Massood Towhidnejad, and Thomas Hilburn. "Digital Home." In Overcoming Challenges in Software Engineering Education. IGI Global, 2014. http://dx.doi.org/10.4018/978-1-4666-5800-4.ch017.

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While many Software Engineering (SE) and Computer Science (CS) textbooks make use of case studies to introduce difference concepts and methods, the case studies introduced by these texts focus on a specific life-development phase or a particular topic within software engineering object-oriented design and implementation or requirements analysis and specification. Moreover, these case studies usually do not come with instructor guidelines on how to adopt the introduced material to the instructor’s teaching style or to the particular level of the class or students in the class. The DigitalHome Case Study aims at addressing these shortcomings by providing a comprehensive set of artifacts associated with the full software development life-cycle. The project provides an extensive set of case study modules with exercises for teaching different topics in software engineering and computer science, as well as guidance for instructors on how to use these case modules. In this chapter, the authors motivate the use of the case study approach in teaching SE and CS concepts. They provide a description of the DigitalHome case study and the associated artifacts and case modules. The authors also report on the use of the developed material.
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Conference papers on the topic "Software Digital Phase LockedLoop"

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Burcklen, Marie-Anne, Alice Fontbonne, Hervé Sauer, Caroline Kulcsar, and François Goudail. "Optical/Digital co-Design Approach : Methods, Applications - and how to Trick Your Commercial Optical Design Software." In Imaging Systems and Applications. Optica Publishing Group, 2024. https://doi.org/10.1364/isa.2024.iw1d.3.

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Co-design refers to the joint optimization of optical elements and image processing algorithms to improve the global performance of an imaging system. We present co-design methods for different types of optical systems, starting from binary phase masks to more complex multi-lens systems with high aperture and large field of view. We demonstrate on various examples that this approach can increase imaging performance and lead to lighter and more compact systems. Full-text article not available; see video presentation
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Lua, Jim, Kalyan Shrestha, Anand Karuppiah, Mark Timko, Scot Lund, and Rui Li. "Multi-Physics Modeling and Planning Tool for Tailoring of Quenching Process of Representative Airframe Structural Components." In Vertical Flight Society 81st Annual Forum and Technology Display. The Vertical Flight Society, 2025. https://doi.org/10.4050/f-0081-2025-389.

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Quenching is the most critical step in the sequence of heat-treating operations, aiming to preserve the solid solution formed at the solution heat-treating temperature by rapidly cooling the material to near room temperature. Currently, there is no reliable, performance-informed quenching process that can consistently reduce the high scrap rate of airframe aluminum forging parts, which often suffer from significant residual stress and distortion. This limitation stems from the complex interactions between temperature, phase transformations, and stress/strain behavior—each influenced by the evolving temperature distribution and microstructural state of the workpiece. Conventional modeling techniques for quenching processes typically lump these multiscale, multi-physics phenomena into a simplified heat transfer coefficient (HTC). However, determining the spatial and temporal variations of HTC through experiments is both prohibitively time-consuming and costly. To address this challenge and enable rapid process tailoring for reduced distortion, we have developed and validated a digital twin-based Quenching Laboratory Software (QLAB) tool. QLAB integrates a thermal multi-phase computational fluid dynamics (CFD) model, sequentially coupled with a Mechanical Threshold Stress (MTS) model and a precipitation model. The thermal CFD component captures turbulent flow, multi-phase transformations, and the complex heat transfer stages of quenching including vapor blanket formation, nucleate boiling, and convection—to accurately predict temperature evolution. The MTS-precipitation model quantifies the effects of microstructural precipitates on the material's mechanical response under thermal loading. QLAB has been thoroughly validated using representative aluminum airframe components, including aluminum bars with pockets and Lcorner parts. We demonstrate the tool's predictive accuracy by comparing its output against experimentally measured temperature and distortion fields. Finally, we apply the validated QLAB to conduct a virtual quenching test on a simplified aluminum airframe structure, showcasing its potential for performance-informed process optimization.
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Deng, Tian–Bo. "Regularized Linear Fractional Programming for Implementing Digital Phase Compensators." In 2024 21st International Joint Conference on Computer Science and Software Engineering (JCSSE). IEEE, 2024. http://dx.doi.org/10.1109/jcsse61278.2024.10613732.

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Shen, Weicong, and Fan Zhang. "A new all-digital phase-locked loop based on single CPLD." In 2016 8th IEEE International Conference on Communication Software and Networks (ICCSN). IEEE, 2016. http://dx.doi.org/10.1109/iccsn.2016.7586670.

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Zhao, Jin, Jianqiu Zhang, and Jianjun Yin. "A Robust Digital Phase Discriminator in One-Bit Quantized Software-Defined Receivers." In 2009 5th International Conference on Wireless Communications, Networking and Mobile Computing (WiCOM). IEEE, 2009. http://dx.doi.org/10.1109/wicom.2009.5304952.

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Syllaios, Ioannis L., Poras T. Balsara, and Robert Bogdan Staszewski. "On the Reconfigurability of All-Digital Phase-Locked Loops for Software Defined Radios." In 2007 IEEE 18th International Symposium on Personal, Indoor and Mobile Radio Communications. IEEE, 2007. http://dx.doi.org/10.1109/pimrc.2007.4394091.

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Monteiro, Francisco Elenilson Pessoa, Rainara Maia Carvalho, and Enyo José Tavares Gonçalves. "Classifiqui: The game for software Requirements Classification Learning." In Anais Estendidos do Simpósio Brasileiro de Jogos e Entretenimento Digital. Sociedade Brasileira de Computação, 2022. http://dx.doi.org/10.5753/sbgames_estendido.2022.225511.

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Many problems in software development happen due to missing or insufficient handling of software requirements. The area that deals with how professionals must discover, document and validate requirements is Requirements Engineering (RE). RE is concerned with eliciting, analyzing, specifying, validating and managing user needs to be met by the software. In elicitation, professionals must discover and understand what are the customers and users needs. In this phase, a lot of information is passed on to the analysts and normally this information does not come in a succinct, complete and well-organized list. Serious games have been used to support several areas of computing knowledge, including RE. However, there is still a gap to support teaching requirements classification through play. Thus, this work presents the CLASSIFIQUI game, which was proposed to support the teaching of requirements classification. The game was evaluated through a study and proved to be suitable for teaching requirements classification.
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Li, Boyuan, Duo Li, Jianghai Li, et al. "Quantifying Software Safety in Nuclear Power Plants: A Framework for Requirements Phase Assessment." In 2024 31st International Conference on Nuclear Engineering. American Society of Mechanical Engineers, 2024. http://dx.doi.org/10.1115/icone31-135382.

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Abstract With the increasing dependence on digital instrumentation and control (I&amp;C) systems in nuclear power plants, software has become a significant determinant of system safety assurance. To expand the use of digital technology in the nuclear industry, systematic methods are required for quantifying the safety of software-based I&amp;C systems in safety critical applications. A software safety quantification model limited to the requirements phase is built in this paper based on the causal mechanisms that challenge safety. A preliminary mathematical method was developed to assess the number of requirements faults, their sub-types, their hazard rates and a control gate that allows determination of when to move beyond the requirements phase. A case study is conducted on a function of a reactor protection system to verify the validity of the quantification model. The framework allows us to assess software safety quantitatively.
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Pesterev, A. A., and S. S. Kostinskiy. "Plug-In Software for the Phase Distribution of Single-Phase Consumers in Electric Grids Used in Digital Twin Design and Development Based on the BIM Technology." In 2023 International Conference on Industrial Engineering, Applications and Manufacturing (ICIEAM). IEEE, 2023. http://dx.doi.org/10.1109/icieam57311.2023.10138972.

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Hugo, Costeno, Kandasamy Rajeswary, Telles Jose, et al. "Application of Digital Well Construction Planning Tool During Well Conceptualization Phase." In SPE Annual Technical Conference and Exhibition. SPE, 2021. http://dx.doi.org/10.2118/206248-ms.

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Abstract Digital well construction tools are becoming more widely considered today for well design planning, enabling automated engineering and simultaneous team collaboration under a single solution. This paper shows the results of using a digital well construction planning solution during a project’s conceptual planning stage. This method shortens the time needed to estimate the well times and risk profile for a drilling campaign by applying smart engines to quickly and accurately perform critical offset analysis for defined well types that is required for project sanction. With this solution, the Offset Well Analysis (OWA) process is done automatically based on the location of the planned well, trajectory and well architecture. Various information and reports (both subsurface and surface data) from neighboring wells is stored in cloud solutions, enabling ease of access and data reliability for both large or smaller scale data storage. The software selects the most relevant offset wells, displays the risk analysis and generates the stick chart. For a conceptual design, the risk levels can be manually set higher due to potential unknowns in surface and subsurface risks which can later be refined. Quick validation of the well design allows the engineer to design a conceptual drilling campaign quickly and more efficiently. The solution minimizes the time to perform probabilistic time and risk estimations. It reduces the risk of biased decision making due to manual input and design. This allows for better-informed decisions on project feasibility, alignment of stakeholders, increased design reliability as well as reducing the amount of time and resources invested in OWA. The work presented here is aimed at sharing the experience of applying a digital well construction planning solution specifically on the conceptual project stage and discuss the value it adds to the well design process.
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Reports on the topic "Software Digital Phase LockedLoop"

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Desa, Hazry, and Muhammad Azizi Azizan. OPTIMIZING STOCKPILE MANAGEMENT THROUGH DRONE MAPPING FOR VOLUMETRIC CALCULATION. Penerbit Universiti Malaysia Perlis, 2023. http://dx.doi.org/10.58915/techrpt2023.004.

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Stockpile volumetric calculation is an important aspect in many industries, including construction, mining, and agriculture. Accurate calculation of stockpile volumes is essential for efficient inventory management, logistics planning, and quality control. Traditionally, stockpile volumetric calculation is done using ground-based survey methods, which can be time-consuming, labour-intensive, and often inaccurate. However, with the recent advancements in drone technology, it has become possible to use drones for stockpile volumetric calculation, providing a faster, safer, and more accurate solution. The duration of this project is one year, from May 1st, 2019, until April 30th, 2020, and is comprised of two primary research components: analyzing the properties and classification of limestone and conducting digital aerial mapping to calculate stockpile volumetrics. The scope of this technical report is specifically limited to the aerial mapping aspect of the project, which was carried out using drones. The project involved two phases, with drone flights taking place during each phase, spaced about six months apart. The first drone flight for data collection occurred on July 12th, 2019, while the second took place on December 15th, 2020. The project aims to utilize drone technology for stockpile volumetric calculation, providing a more efficient and cost-effective solution. The project will involve the use of advanced drone sensors and imaging technology to capture high-resolution data of the stockpile area. The data will then be processed using sophisticated software algorithms to generate accurate 3D models and volumetric calculations of the stockpile.
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Moreda, Fekadu, Benjamin Lord, Mauro Nalesso, Pedro Coli Valdes Daussa, and Juliana Corrales. Hydro-BID: New Functionalities (Reservoir, Sediment and Groundwater Simulation Modules). Inter-American Development Bank, 2016. http://dx.doi.org/10.18235/0009312.

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The Inter-American Development Bank (IDB) provides financial and technicalsupport for infrastructure projects in water and sanitation, irrigation, flood control, transport, and energy, and for development projects in agriculture, urban systems, and natural resources. Many of these projects depend upon water resources and may be affected negatively by climate change and other developments that alter water availability, such as population growth and shifts in land use associated with urbanization, industrial growth, and agricultural practices. Assessing the potential for future changes in water availability is an important step toward ensuring that infrastructure and other development projects meet their operational, financial, and economic goals. It is also important to examine the implications of such projects for the future allocation of available water among competing users and uses to mitigate potential conflict and to ensure such projects are consistent with long-term regional development plans and preservation of essential ecosystem services. As part of its commitment to help member countries adapt to climate change, the IDB is sponsoring work to develop and apply the Regional Water Resources Simulation Model for Latin America and the Caribbean, an integrated suite of watershed modeling tools known as Hydro-BID. Hydro-BID is a highly scalable modeling system that includes hydrology and climate analysis modules to estimate the availability of surface water (stream flows) at the regional, basin, and sub-basin scales. The system includes modules for incorporating the effects of groundwater and reservoirs on surface water flows and for estimating sediment loading. Data produced by Hydro-BID are useful for water balance analysis, water allocation decisions, and economic analysis and decision support tools to help decision-makers make informed choices among alternative designs for infrastructure projects and alternative policies for water resources management. IDB sponsored the development of Hydro-BID and provides the software and basic training free of charge to authorized users; see hydrobidlac.org. The system was developed by RTI International as an adaptation of RTI's proprietary WaterFALL® modeling software, based on over 30 years of experience developing and using the U.S. National Hydrography Dataset (NHDPlus) in support to the U.S. Geological Survey and the U.S. Environmental Protection Agency. In Phase I of this effort, RTI prepared a working version of Hydro-BID that includes: (1) the Analytical Hydrography Dataset for Latin America and the Caribbean (LAC AHD), a digital representation of 229,300 catchments in Central America, South America, and the Caribbean with their corresponding topography, river, and stream segments; (2) a geographic information system (GIS)-based navigation tool to browse AHD catchments and streams with the capability of navigating upstream and downstream; (3) a user interface for specifying the area and period to be modeled and the period and location for which water availability will be simulated; (4) a climate data interface to obtain rainfall and temperature inputs for the area and period of interest; (5) a rainfall-runoff model based on the Generalized Watershed Loading Factor (GWLF) formulation; and (6) a routing scheme for quantifying time of travel and cumulative flow estimates across downstream catchments. Hydro-BID generates output in the form of daily time series of flow estimates for the selected location and period. The output can be summarized as a monthly time series at the user's discretion. In Phase II of this effort, RTI has prepared an updated version of Hydro-BID that includes (1) improvements to the user interface; (2) a module to simulate the effect of reservoirs on downstream flows; (3) a module to link Hydro-BID and groundwater models developed with MODFLOW and incorporate water exchanges between groundwater and surface water compartments into the simulation of sur
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