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2. Dataset Construction for Fine-Grained Emotion Analysis in Catering Review Data

Author

Liu, Junling, Chang, Tianyu, Shi, Xinyun, Sun, Huanliang, Xu, Jingke, Goos, Gerhard, Series Editor, Hartmanis, Juris, Founding Editor, Bertino, Elisa, Editorial Board Member, Gao, Wen, Editorial Board Member, Steffen, Bernhard, Editorial Board Member, Yung, Moti, Editorial Board Member, Jin, Cheqing, editor, Yang, Shiyu, editor, Shang, Xuequn, editor, Wang, Haofen, editor, and Zhang, Yong, editor

Published
2024
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15. Key technologies in the teleoperation of the Chang’e-5 lunar sampling

Author

LIU, ChuanKai, primary, LI, Jian, additional, ZHANG, TianZhu, additional, LIU, Qian, additional, HUANG, ZeYuan, additional, ZHANG, JiTao, additional, GAO, YuHui, additional, YU, TianYi, additional, ZHANG, Kuan, additional, CHANG, TianYu, additional, WU, Jie, additional, YANG, Cheng, additional, LI, GuiLiang, additional, DENG, JiaCheng, additional, XU, NanQing, additional, and FENG, XiaoMeng, additional

Published
2021
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17. Lowest-v IN CMOS Single-Inductor Boost Charger: Design, Limits, and Validation.

Author

Chang, Tianyu and Rincon-Mora, Gabriel A.

Subjects
*BATTERY chargers, *LOW voltage systems, *MICROELECTROMECHANICAL systems, *DESIGN
Abstract

The lowest input voltage for a single-inductor switched-inductor (SL) boost charger to draw power is critical for energy-harvesting applications. When a battery is fully discharged, the charger solely relies on the millivolt input-source voltage vS to wake the system. When the charger is awake and operates in static mode, it needs to draw power from low voltage vS efficiently. Thus, the major contribution of this article is theorizing the fundamental limits of SL converters, and experimentally validating the lowest vS possible for a single-inductor boost to operate, both in wake and static mode. This article derives closed-form design expressions for all circuit components and validates the design theory with a 1.6-μm CMOS prototype. When source resistance is 350 Ω, this prototype validates that the lowest-possible vS for SLs in wake mode is 225–285 mV. In static mode, the lowest-possible vS for SLs is 40 mV. Despite recent literature shows that switched-capacitors (SCs) can wake with lower vS, theorizing and experimentally validating the lowest vS possible for SL converters can prove the fundamental limits of SL chargers. Moreover, since this article also validates that SLs operate with lower vS than SCs in static mode, thus, SC-SL hybrids are the best system. [ABSTRACT FROM AUTHOR]

Published
2022
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