11 results
Search Results
2. Development of intelligent traction walking plate for tension overhead construction.
- Author
-
Li, Xiaobin, Li, Ye, Wang, Feng, Huang, Zhiming, Yao, Pan, and Li, Baoguo
- Subjects
ELECTRIC lines ,INDUSTRIAL safety ,ELECTRICAL engineering ,MATHEMATICAL optimization ,AUTOMATION - Abstract
In the process of tension wire construction of transmission lines, the key state quantities such as tension, inclination and spatial position of the traction walking plate directly affect the construction safety. At present, the construction personnel use visual observation to obtain the state quantity of traction walking plate in the process of tension wire construction. This monitoring method is not only inefficient, and there are personal subjective factors of judgment errors. For this reason, this paper develops a kind of intelligent traction walking plate for tension wire construction, based on the principle of resistance strain type and gyroscope to obtain the tension and inclination of the traction walking plate, respectively, using two front cameras and two rear cameras to obtain the spatial position of the traction walking plate, and finally completing the real‐time transmission of the monitoring data through the Lora technology. The developed intelligent traction walking plate was applied in Shandong Heze Yongfeng 220 kV transmission line project on 11 October 2020, which improved the construction efficiency by 15.71% while ensuring the construction safety. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
3. Optimal operation of electric–freshwater energy system considering load regulation strategy of individual hydrogen electrolyzer.
- Author
-
Wang, He, Zhou, Bowen, Li, Fabin, Ma, Xingming, Gao, Yujie, and Yang, Hao
- Subjects
WATER supply ,CLEAN energy ,RENEWABLE energy sources ,ENERGY storage ,OPERATING costs - Abstract
In view of the existing literature, only the optimization operation of hydrogen energy–wind/light new energy is considered, and the research problems such as comprehensive utilization of water resources and load control strategies are ignored. Based on the analysis of load characteristics of offshore wind power, this paper has established an optimal operation model of power‐fresh water energy system based on "wind‐hydrogen‐water‐electricity" interaction. Meanwhile, an electrolytic hydrogen individual load control strategy is proposed to match wind power fluctuations from the perspective of internal load regulation of electrolytic hydrogen system. From the economic characteristics, operation characteristics, accommodation situation and other simulation analysis, it can reduce the total operating cost by about 3.1%, improve the utilization rate of electrolytic cell capacity, and meet the water demand of coastal users. It shows that the individual control strategy and optimal operation model have advantages, which is of great significance for realizing low‐carbon, safe, and economical operation of power grid in the future. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
4. The mediating role of higher-order thinking skill in the relationship between mathematics strength and achievement in electrical and electronic engineering education.
- Author
-
Theodore Oduro-Okyireh, Budi Mulyanti, Dedi Rohendi, George Oduro-Okyireh, Alice Constance Mensah, and Kennedy Acheam pong
- Subjects
CRITICAL thinking ,MATHEMATICS ,ENGINEERING education - Abstract
Purpose: The paper aims to examine the casual role of higher-order thinking skills as a mediator in the relationship between students' strength in mathematics and achievement in electrical and electronic engineering education. Design/Methodology/Approach: The study adopted a quantitative research design where random cluster sampling was used to select a total of 488 final-year students from four technical universities in Ghana. Mathematics achievement tests were used to gather data on students' higher-order thinking skills and competence in five areas of mathematics. Also, their examination results were collected from their respective universities. Mediation analysis was done using AMOS 26. Finding: The study revealed that the positive effect of students' strengths in the five selected mathematics topics on their performance in electrical and electronic engineering education is mediated by their higher-order thinking skills. Conclusion: The research concludes that there is a partial mediation in the relationship between students' strength in mathematics and achievement in electrical and electronic engineering education by higher-order thinking skills. Research Limitations: It is recommended that further researchers carry out similar research with more mathematics indicators to explain more variations in achievement in electrical and electronic engineering education. Practical Implication: Engineering mathematics curriculum developers should stress the need for mathematics, especially algebra, for the development of higher-order thinking skills to facilitate problem-solving in electrical and electronic engineering education and practice. Contribution to Literature: This study highlights the relationship between the understanding of the concepts of specific mathematics topics, higher-order thinking skills, and achievement in electrical and electronic engineering education. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
5. Symmetrical components‐based robust stabilizing control of a grid‐connected inverter under unbalanced voltage sag.
- Author
-
Choeung, Chivon, Danayiyen, Yahya, Srang, Sarot, and Lee, Young‐Il
- Subjects
ROBUST statistics ,ELECTRIC potential ,ELECTRIC power distribution grids ,ELECTRIC inverters ,ELECTRONICS - Abstract
This study presents an approach for robust current and power control for a three‐phase grid‐connected inverter set up with an L‐filter that operates under an unbalanced AC grid‐voltage source. This control method consists of two paralleled current control for the positive and negative sequences to accomplish one of three selective control targets: a) supplying balanced three‐phase current; b) supplying non‐oscillated real power; and c) supplying non‐oscillated imaginary power to the AC grid for a given reference value utilizing the identical control gains. The real and imaginary power references, together with the measured grid voltages, are used in the computation of the reference current for each control target. In addition, the proposed dual‐current control system has a control law that comprises state feedback to offer stability and an integral effect to get rid of the offset error in the dq‐frame. To reduce settling time under uncertain system conditions, an optimization problem based on linear matrix inequalities is solved to determine a set of robust stabilizing gains. Simulation and experimental results using a TMS320F28377D digital signal processor validate the proposed control performance under three control targets. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
6. Development of intelligent traction walking plate for tension overhead construction
- Author
-
Xiaobin Li, Ye Li, Feng Wang, Zhiming Huang, Pan Yao, and Baoguo Li
- Subjects
circuits ,construction automation ,devices and systems ,electrical and electronic engineering ,engineering optimization ,Engineering (General). Civil engineering (General) ,TA1-2040 - Abstract
Abstract In the process of tension wire construction of transmission lines, the key state quantities such as tension, inclination and spatial position of the traction walking plate directly affect the construction safety. At present, the construction personnel use visual observation to obtain the state quantity of traction walking plate in the process of tension wire construction. This monitoring method is not only inefficient, and there are personal subjective factors of judgment errors. For this reason, this paper develops a kind of intelligent traction walking plate for tension wire construction, based on the principle of resistance strain type and gyroscope to obtain the tension and inclination of the traction walking plate, respectively, using two front cameras and two rear cameras to obtain the spatial position of the traction walking plate, and finally completing the real‐time transmission of the monitoring data through the Lora technology. The developed intelligent traction walking plate was applied in Shandong Heze Yongfeng 220 kV transmission line project on 11 October 2020, which improved the construction efficiency by 15.71% while ensuring the construction safety.
- Published
- 2024
- Full Text
- View/download PDF
7. Joint delay and energy aware dragonfly optimization‐based uplink resource allocation scheme for LTE‐A networks in a cross‐layer environment.
- Author
-
Moses, Leeban, Sambantham, Perarasi, Faheem, Muhammad, Ali K, Shoukath, and Khan, Arfat Ahmad
- Subjects
RESOURCE allocation ,5G networks ,COMPUTER network traffic ,DATA transmission systems ,ENERGY consumption ,ELECTROMAGNETIC theory - Abstract
The exponential growth in data traffic from smart devices has led to a need for highly capable wireless networks with faster data transmission rates and improved spectral efficiency. Allocating resources efficiently in a 5G communication system with a huge number of machine type communication (MTC) devices is essential to ensure optimal performance and meet the diverse requirements of different applications. The LTE‐A network offers high‐speed mobile data services and caters to MTC devices and has relatively low data service requirements compared to human‐to‐human (H2H) communications. LTE‐A networks require advanced scheduling schemes to manage the limited spectrum and ensure efficient transmissions. This necessitates effective resource allocation schemes to minimize interference between cells in future networks. To address this issue, a joint delay and energy aware Levy flight Brownian movement‐based dragonfly optimization (DELFBDO)‐based uplink resource allocation scheme for LTE‐A Networks is proposed in this work to optimize energy efficiency, maximize the throughput and reduce the latency. The DELFDO algorithm efficiently organizes packets in both time and frequency domains for H2H and MTC devices, resulting in improved quality of service while minimizing energy consumption. The Simulation results demonstrate that the proposed method increases the energy efficiency by producing the appropriate channel and power assignment for UEs and MTC devices. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
8. Optimal operation of electric–freshwater energy system considering load regulation strategy of individual hydrogen electrolyzer
- Author
-
He Wang, Bowen Zhou, Fabin Li, Xingming Ma, Yujie Gao, and Hao Yang
- Subjects
clean energy ,distributed generation ,electrical and electronic engineering ,energy storage ,power system operation ,power system optimization ,Engineering (General). Civil engineering (General) ,TA1-2040 - Abstract
Abstract In view of the existing literature, only the optimization operation of hydrogen energy–wind/light new energy is considered, and the research problems such as comprehensive utilization of water resources and load control strategies are ignored. Based on the analysis of load characteristics of offshore wind power, this paper has established an optimal operation model of power‐fresh water energy system based on “wind‐hydrogen‐water‐electricity” interaction. Meanwhile, an electrolytic hydrogen individual load control strategy is proposed to match wind power fluctuations from the perspective of internal load regulation of electrolytic hydrogen system. From the economic characteristics, operation characteristics, accommodation situation and other simulation analysis, it can reduce the total operating cost by about 3.1%, improve the utilization rate of electrolytic cell capacity, and meet the water demand of coastal users. It shows that the individual control strategy and optimal operation model have advantages, which is of great significance for realizing low‐carbon, safe, and economical operation of power grid in the future.
- Published
- 2024
- Full Text
- View/download PDF
9. Tools and Technologies for Blind and Visually Impaired Navigation Support: A Review
- Author
-
Raju Shrestha, Frode Eika Sandnes, and Bineeth Kuriakose
- Subjects
Blind people ,Computer science ,Visually impaired ,020208 electrical & electronic engineering ,Assistive tools ,020206 networking & telecommunications ,02 engineering and technology ,Travel aids ,Accessibility ,Assistive technologies ,Navigation ,Navigational instrument ,Human–computer interaction ,Assistive technology ,0202 electrical engineering, electronic engineering, information engineering ,Visually impaired people ,Electrical and Electronic Engineering - Abstract
The development of navigation tools for people who are visually impaired had become an important concern in the research area of assistive technologies. This paper gives a comprehensive review of different articles published in the area of navigation solutions for people who are visually impaired. Unlike other review papers, this review considers major solutions that work in both the indoor or/and outdoor environments which are based on different technology. From the review, it became clear that the navigation systems proposed for the target users lack some core features that are quite important for independent navigation. Also, there can be instances in which humanitarian conditions also have to be considered in the navigation system design. Based on these findings, a set of recommendations are also given which can be considered in the future design of navigation systems for blind and visually impaired people.
- Published
- 2020
10. Open Data and Energy Analytics
- Author
-
Massimiliano Manfren, Michel Noussan, and Benedetto Nastasi
- Subjects
Control and Optimization ,energy planning ,smart cities ,Computer science ,Energy (esotericism) ,Energy Engineering and Power Technology ,lcsh:Technology ,Electrical and Electronic Engineering ,open data analytics ,open energy governance ,Engineering (miscellaneous) ,Renewable Energy, Sustainability and the Environment ,business.industry ,urban database ,lcsh:T ,energy modelling ,data mining ,Energy planning ,Data science ,Open data ,building dataset ,machine learning ,Analytics ,Data analysis ,business ,energy mapping ,Smart cities ,Urban database ,Energy (miscellaneous) - Abstract
This pioneering Special Issue aims at providing the state-of-the-art on open energy data analytics; its availability in the different contexts, i.e., country peculiarities; and at different scales, i.e., building, district, and regional for data-aware planning and policy-making. Ten high-quality papers were published after a demanding peer review process and are commented on in this Editorial.
- Published
- 2020
11. Using Low-Cost Sensors to Develop a High Precision Lifting Controller Device for an Overhead Crane—Insights and Hypotheses from Prototyping a Heavy Industrial Internet Project
- Author
-
Juuso Autiosalo, Martin Steinert, Heikki Sjöman, Jari Juhanko, Petri Kuosmanen, Norwegian University of Science and Technology, Department of Mechanical Engineering, Aalto-yliopisto, and Aalto University
- Subjects
Computer science ,Controller (computing) ,Internet of Things ,02 engineering and technology ,Heavy industry ,lcsh:Chemical technology ,Biochemistry ,Article ,Analytical Chemistry ,0502 economics and business ,0202 electrical engineering, electronic engineering, information engineering ,lcsh:TP1-1185 ,Electrical and Electronic Engineering ,Instrumentation ,Wayfaring ,ta213 ,business.industry ,Industrial Internet ,Value proposition ,05 social sciences ,prototyping ,Overhead crane ,Atomic and Molecular Physics, and Optics ,Manufacturing engineering ,New product development ,iterating ,Factory (object-oriented programming) ,020201 artificial intelligence & image processing ,The Internet ,User interface ,business ,050203 business & management ,Agile software development - Abstract
The subject of this study was the product development project creating a new innovative proof-of-concept (POC) prototype device that could control a connected industrial overhead crane in order to perform automatic or semi-automatic high precision lifts within a limited time frame. The development work focused on innovating a new measuring concept, which was parallel to finding suitable sensors for the application. Furthermore, the project resulted in a closed loop control system with Industrial Internet connected sensors and a user interface for factory workers. The prototyping journey is depicted to illustrate the decisions made during the product development project to contribute to both the pragmatic and the process discussion in the field of Industrial Internet. The purpose of this research was to explore and generate hypotheses for how new applications should be developed for heavy industry connected devices. The research question is: what are the implications of applying agile product development methods, such as Wayfaring, to heavy industrial machinery and Industrial Internet -based problems? The methodologies used in this paper, in addition to developing the device, are case study research and hypotheses generated from case studies. The hypotheses generated include that it is also possible to prototype large size connected machinery with low-cost and in a short time, and investment decisions for heavy Industrial Internet products become easier with concrete data from proof-of-concept prototypes by creating knowledge about the investment risk and the value proposition.
- Published
- 2018
Discovery Service for Jio Institute Digital Library
For full access to our library's resources, please sign in.