An energy-saving fuzzy control system for highway tunnel lighting

Zhao, Liang; Qu, Shaocheng; Zhang, Weigang; Xiong, Zhili

doi:10.1016/j.ijleo.2018.11.123

Cited by 31 publications

(16 citation statements)

References 7 publications

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“…In this research, the weighted mean method [ 35 ] was adopted for defuzzification. The output fuzzy subset was defuzzified to obtain the output variable U a , as expressed by Equation (7).…”

Section: Methodsmentioning

confidence: 99%

Numerical Simulation of Intelligent Fuzzy Closed-Loop Control Method for Radial–Axial Ring Rolling Process of Super-Large Rings

et al. 2022

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During the radial–axial ring rolling (RARR) process of super-large rings, abnormal deformation states such as instability and out of circularity often lead to rolling termination and quality fluctuation of ring products. In this work, an intelligent fuzzy closed-loop control method for RARR process of super-large rings is proposed, i.e., the ring’s offset adaptive fuzzy control (ROAFC) based on the regulation of the axial roll’s rotational speed and the ring’s circularity fuzzy control (RCFC) based on the regulation of the mandrel’s feed speed. In addition, a recursive average filtering algorithm is added to smooth the axial roll’s rotational speed and the mandrel’s feed speed according to the actual situation. Using the ABAQUS/Explicit software and its subroutine VUAMP, the intelligent fuzzy controller of the ring’s offset and circularity in the RARR process is designed, and the finite element (FE) model for RARR process of a Φ10 m super-large ring with an integrated intelligent fuzzy control algorithm is established. The variation laws of the ring’s offset and circularity error in the RARR process are studied with regard to different control methods such as conventional planning control (CPC), ROAFC, RCFC, and comprehensive control of ROAFC combined with RCFC (ROAFC + RCFC). The results obtained show that, compared with the CPC, the ring’s offset is reduced by 84.6% and the circularity error is decreased by 51.9% in the RARR process utilizing comprehensive control of ROAFC + RCFC. The research results provide methodological guidance for realizing the intelligent forming of super-large rings.

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Section: Methodsmentioning

confidence: 99%

Numerical Simulation of Intelligent Fuzzy Closed-Loop Control Method for Radial–Axial Ring Rolling Process of Super-Large Rings

et al. 2022

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“…The short-term ECRs include replacement of the HPS lights with LED lights and installation IOT technologies based on vehicle speed, traffic volume, road occupancy. [25][26][27] However, this study is focused on low cost and short-term ECRs, which is retrofitting of HPS lights with LED lights.…”

Section: Energy Conservation Recommendationsmentioning

confidence: 99%

Energy conservation potential in highway illumination system: A Techno-Enviro-Economic study on retrofitting HPS with LED luminaires

Ahmed

Khalid

Aslam

2021

Energy & Environment

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Adequate and appropriate illumination across the highway isessential for safety. High-pressure sodium luminaires (HPS) are usually standard throughout Pakistan. However, with the advancements in illumination technologies and growing trend of energy efficiency, retrofitting of conventional HPS luminaires with light-emitting diode luminaires (LEDs) is becoming popular. Low energy consumption, high color rendering index (CRI), longer life span, and variety in correlated color temperature (CCT) make LED luminaires ideal for replacing inefficient HPS lights. The retrofitting of HPS with LED illumination system comes with a capital cost, and its feasibility depends on the energy conservation potential. This study presents a case of 4,014 HPS luminaires installed across an 85 km long highway in second highly populated city of Pakistan. A targeted energy audit of HPS illumination system was conducted and compared with the proposed LED system of equivalent illumination quality. The results indicate that by retrofitting the HPS luminaires, the energy consumption can be reduced by 60% and with 83.3% reduction in the apparent power. Furthermore, the proposed LED illumination system will significantly improve the power quality, light noise, energy losses, carbon footprint, and operational cost.

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“…Then, the smart meter will transmit all electricity data to ARM board via RS485 bus. Note that this smart meter is designed by our research team, which has been applied to our previous work [24] and shows excellent performance.…”

Section: Energy Management and Service Platformmentioning

confidence: 99%

Energy-Saving and Management of Telecom Operators’ Remote Computer Rooms Using IoT Technology

Zhao

Zeng

et al. 2020

IEEE Access

Self Cite

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In order to achieve the energy saving and management, this paper proposes an IoT-based energy-saving and management system for Telecom operators' remote computer rooms (RCRs). Firstly, a management system based on IoT technology for RCRs is designed. By using technologies such as embedded systems, sensor technology and Java Web, this system realizes equipment management and realtime data visualization of RCRs. Then, a simple but effective air conditioner energy-saving algorithm, called ET algorithm, is developed. Without causing high investment cost, ET algorithm minimizes the energy consumption of air conditioners which accounts for nearly 40% of total consumption, and thus improves the overall energy efficiency of RCRs. Moreover, the proposed system has been implemented at many Telecom operators' RCRs distributed at different regions in Guangdong Province of China, and stably operating for more than two years. Experimental results show that the proposed system not only effectively manages and monitors RCRs, but also achieves 16.64% energy-saving effect.

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An energy-saving fuzzy control system for highway tunnel lighting

Cited by 31 publications

References 7 publications

Numerical Simulation of Intelligent Fuzzy Closed-Loop Control Method for Radial–Axial Ring Rolling Process of Super-Large Rings

Numerical Simulation of Intelligent Fuzzy Closed-Loop Control Method for Radial–Axial Ring Rolling Process of Super-Large Rings

Energy conservation potential in highway illumination system: A Techno-Enviro-Economic study on retrofitting HPS with LED luminaires

Energy-Saving and Management of Telecom Operators’ Remote Computer Rooms Using IoT Technology

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