Showing 1-25 of 24,103 resultsfor "Index Terms":Start Time
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Start-up Procedure and Soft-starting Strategy for Dual Active Bridge Converter
2020 IEEE 9th International Power Electronics and Motion Control Conference (IPEMC2020-ECCE Asia)
Year: 2020 | Conference Paper |
Cited by: Papers (4)
Dual active bridge converters are widely used in applications with high power density and bidirectional power transmission, such as distributed energy, energy storage systems, and electric vehicles. Aiming at the problems of DC bias and shock of the inductor current during the start-up of the dual active bridge converter, this paper focuses on the analysis of the start-up process of the dual activ...Show More
Minimizing Cold Start Time on Serverless Platforms Based on Time Series Prediction Methods
2024 IEEE 2nd International Conference on Control, Electronics and Computer Technology (ICCECT)
Year: 2024 | Conference Paper |
The research in this paper focuses on minimizing cold start times in serverless platforms using time series forecasting methods. The study begins by analyzing the mechanism of cold start issues in serverless computing and proposes a method based on time series prediction to forecast future function call volumes. This method is designed to reduce cold start occurrences by pre-starting functions bas...Show More
Starting time calculation of large induction motors using their manufacturer technical data
2016 19th International Conference on Electrical Machines and Systems (ICEMS)
Year: 2016 | Conference Paper |
Cited by: Papers (3)
Large high-voltage induction motors are widely used in industrial applications. Their accurate starting time is very much important for setting their over-current protective devices against heating and assessing power quality of distribution power system. In this paper, the starting time is accurately evaluated from a newly proposed technique that is employed to estimate electrical torque curve of...Show More
Research on Black-start Zoning Method for Maximum Power Recovery
Shen Yi;Gao Jianliang;Liu Yang;Chen Qiuping;Zhang Hongli;Liu Fusuo
2022 Power System and Green Energy Conference (PSGEC)
Year: 2022 | Conference Paper |
Cited by: Papers (2)
Reasonable network partitioning schemes for black start restoration after large scale blackout of a power system can increase the restoration efficiency and shorten the duration of the restoration process. In this paper, an evaluation method of new energy as black start power supply is proposed, which comprehensively considers the uncertainty of new energy output, the capacity of energy storage co...Show More
On-line calculation of the latest starting time for repetitive process progress schedule based on feedback control approach
Proceedings of SICE Annual Conference 2010
Year: 2010 | Conference Paper |
This paper proposes an on-line calculating method of the latest starting times of input parts which make the completing time be in time for the prescribed schedule for multi-input, multi-output, repetitive process progress scheduling. The proposed method is an extension of an event-driven calculation method, which we have proposed using max-plus algebra, to the time-driven case. The obtained calcu...Show More
Predictable Worst-Case Execution Time Analysis for Multiprocessor Systems-on-Chip
2011 Sixth IEEE International Symposium on Electronic Design, Test and Application
Year: 2011 | Conference Paper |
Cited by: Papers (3)
Worst-case execution time analysis is the fundament of real-time system design, and is therefore an area which has been subject to great scientific interest for a long time. However, traditional worst-case execution time analysis techniques assume that the underlying hardware is a monoprocessor system, and this class of hardware platforms is getting less suitable for modern embedded applications, ...Show More
Standard Time Estimation of Manual Tasks via Similarity Measure of Unequal Scale Time Series
The analysis of standard cycle times for manual tasks has been an important subject in time and motion studies for developing a standardized work process for which the laborious and continuous observation of tasks using a time measurement instrument was usually required. In order to automate this procedure, a motion recognition method is proposed to identify the precise start and end times of manu...Show More
Intersection signal timing estimation using bus GPS data
2017 29th Chinese Control And Decision Conference (CCDC)
Year: 2017 | Conference Paper |
Signal timing information (such as cycle length, red time, etc.) is important to bus scheduling and travel time estimation, etc. So it is of great significance to estimate the signal timing information. The existing signal timing estimation method cannot timely respond to the changes of the signal timing parameters, and it cannot well estimate the time that the vehicle arrives at the stop line. Fu...Show More
Research on a test method of startup time for embedded operating system
2024 IEEE 6th International Conference on Civil Aviation Safety and Information Technology (ICCASIT)
Year: 2024 | Conference Paper |
Startup time is one of the important indexes to evaluate the performance of embedded operating system. Aimingat the problems such as low accuracy, weak compatibility and poor feasibility of various conventional system starttime measurement methods, this paper proposes a test method of system start time controlled by program. The test system is built by using the host computer and power control mod...Show More
Blackstart of Power Grids with Inverter-Based Resources
Himanshu Jain;Gab-Su Seo;Eric Lockhart;Vahan Gevorgian;Benjamin Kroposki
2020 IEEE Power & Energy Society General Meeting (PESGM)
Year: 2020 | Conference Paper |
Cited by: Papers (45)
This paper presents the findings of our investigation into inverter-based resource-(IBR-) driven blackstart of electric grids. Four potential black-start configurations with different setups are presented. To evaluate the technical feasibility of IBR-driven black start in the four configurations, a behavioral model of inverters that mimics current-limited inverter operation is developed using vari...Show More
Analysis of Three Synchronous Drive Modes for the Starting Performance of Spindle Motors
IEEE Transactions on Magnetics
Cited by: Papers (4)
In sensorless operation of spindle motors in hard disk drives (HDD), open-looped starting is used to spin up the motor from standstill to a speed that is high enough to reliably detect back-electromotive force (back-EMF) generated in the armature windings. Then the back-EMF zero-crossing points (ZCP) will be used to detect speed and position for closed-looped control. This paper studies three open...Show More
A Software Cache Mechanism for Reducing the OpenTSDB Query Time
2018 18th International Symposium on Communications and Information Technologies (ISCIT)
Year: 2018 | Conference Paper |
Cited by: Papers (1)
As the volume of Internet of Things (IoT) data grows rapidly, a time series database is a major part of the system that helps in storing and retrieving the massive data for analysis and monitoring. Accord-ing to the user behaviors, the data queries often are similar or overlapped to the previous queries, especially when the user adjusts the query parameters on the same time series data for display...Show More
Start-up Fault Detection of Gas Turbine Based on Dynamic Time Warping
2019 International Conference on Sensing, Diagnostics, Prognostics, and Control (SDPC)
Year: 2019 | Conference Paper |
The start-up system is an important auxiliary device of the gas turbine, and the start-up sequence of the gas turbine is a time series process. The performance of the start-up will directly affect whether the gas turbine operates or not. This paper takes a three-shaft gas turbine generator set as the research object and makes a detailed analysis of the common faults in the start-up process, and th...Show More
A 1.9 ps-rms Precision Time-to-Amplitude Converter With 782 fs LSB and 0.79%-rms DNL
Giulia Acconcia;Francesco Malanga;Serena Farina;Massimo Ghioni;Ivan Rech
Measuring a time interval in the nanoseconds range has opened the way to 3-D imaging, where additional information as distance of objects light detection and ranging (LiDAR) or lifetime decay fluorescence-lifetime imaging (FLIM) is added to spatial coordinates. One of the key elements of these systems is the time measurement circuit, which encodes a time interval into digital words. Nowadays, most...Show More
Time Series Analysis Improves System Planning and Operations
2019 IEEE Rural Electric Power Conference (REPC)
Year: 2019 | Conference Paper |
Traditional system modeling has been an effective analysis method for long-term planning, capacitor placement and fault current calculations. However, this method can be very time consuming to validate results for different time periods and network configurations. Analysis such as phase balancing, operational switching, demand response impact and interconnection studies can be performed more accur...Show More
Research on Optimization of Power Time Synchronization System Black Start Based on Supercapacitor
2023 Panda Forum on Power and Energy (PandaFPE)
Year: 2023 | Conference Paper |
Black start recovery is the strategy to deal with power system collapse from severe accidents. A time source is widely applied in the advanced application of power system dispatching control, substation and plant for PMU, traveling wave ranging and lightning positioning. With the development of power system real-time sensing and control ability, an accurate and unified time source has become the p...Show More
A simple low cost and highly efficient operation technique of three phase AC voltage controllers
2023 3rd International Conference on Computing and Information Technology (ICCIT)
Year: 2023 | Conference Paper |
Three phase AC voltage controllers ACVC have many industrial and residential applications. Thyristors and TRIACS play very important role in AC voltage controller ACVC. Synchronization of control signals with supply voltages is required for proper and balanced operation of power switches in ACVC. This paper presents a novel and low-cost synchronization and control signals generation for either thy...Show More
A Simplified Calculation for Motor Starting Time
2021 IEEE-IAS/PCA Cement Industry Conference (IAS/PCA)
Year: 2021 | Conference Paper |
A motor starting time or motor acceleration study is a wise investment to evaluate the success or failure of starting a large motor in an electrical system. Engineers responsible for conducting this study rely on software tools to simulate the electrical motor starting and its effect on the power system. In some situations, only the motor starting time is required by the engineer, not a full motor...Show More
Manufacturing Data Collection and Management Based on Wireless Distributed Numerical Control (WDNC)
2011 Third International Conference on Measuring Technology and Mechatronics Automation
Year: 2011 | Conference Paper |
Cited by: Papers (1)
Manufacturing data collection and management requirements are raised after WDNC built in NC workshop. NC real-time status and machining information such as operators, jobs, downtimes with reasons can be collected. The article compares four different methods of data collection, and combined collection methods can maximize automatic machine data collection and minimize manual data collection. Relate...Show More
The transmission control protocol (TCP) Friendly Rate Control (TFRC) protocol emulates a TCP-like slow start algorithm, which is known to cause two problems: (1) takes many round-trip times to reach the optimal operating point; (2) misleads the sender to send too many packets too quickly at the end of the slow start phase. In this paper, we propose a modified measurement-based slow start mechanism...Show More
A two-time-scale model for hospital patient flow
Hospitals are currently facing high incidences of ambulance bypass, long waiting lists for elective procedures and a significant proportion of patients experiencing long stays in the emergency department before moving to a bed in a ward. We observe that the system of wards and the emergency department in essence operates on two time-scales: the wards operate on a time-scale of days, whereas the st...Show More
Handling high torque starts in new and retrofit applications
2017 IEEE-IAS/PCA Cement Industry Technical Conference
Year: 2017 | Conference Paper |
Cited by: Papers (2)
Many applications have a higher starting torque requirement and it is sometimes a struggle to provide smooth starting performance. VFD starts are known to reduce starting stresses but may not always provide the best overall solution when economics, performance and process control are considered. This paper will review considerations for new and retrofit applications, touching on torques required b...Show More
Rapid updating for path-planning using nonlinear branch-and-bound
2010 IEEE International Conference on Robotics and Automation
Year: 2010 | Conference Paper |
Cited by: Papers (7)
This paper develops and tests a novel rapid updating technique for use with a nonlinear branch and bound optimisation method, tailored for finding optimal trajectories for a vehicle constrained to avoid fixed obstacles. The key feature of the rapid updating technique developed is the ability to increment and re-arrange the existing search tree reducing the amount of computation taken to find a new...Show More
A radar task scheduling method is proposed by using the Monte Carlo simulation with the earliest start time (EST) algorithm. The method gets an initial solution by using the EST. Then multiple Monte Carlo simulations are used for more solutions. At each Monte Carlo simulation, the start time of each task is randomly shifted in its schedulable time window, and a new solution is achieved by using th...Show More
Development of a Time-of-Flight Electronics System for Neutron Beam Profiling at CSNS-WNS
Haolei Chen;Changqing Feng;Jiadong Hu;Laifu Luo;Li Wang;Zhixin Tan;Shubin Liu
A 256-channel time-of-flight electronics system has been developed for a facility called “Back-n white neutron source (WNS)” in China Spallation Neutron Source (CSNS). This paper presents the structure and performance of the electronics system and test results at CSNS-WNS. A piece of lithium glass scintillator, coupled with a 256-channel multi-anode photomultiplier tube, is placed at the center of...Show More
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