23 citations · 23 across the 16 of their papers we have counts for
16 papers
Design and Initial Test of the Weighing Unit for Tsinghua Tabletop Kibble Balance
Weibo Liu, Nanjia Li, Lushuai Qian +4
This paper presents a customized weighing unit developed for the Tsinghua tabletop Kibble balance. The system is based on a flexure hinge mechanism sourced from a commercial weighi…
An Optical System for Monitoring Coil Parasitic Motion and Mass Position for Tsinghua Tabletop Kibble Balance
Weibo Liu, Kang Ma, Nanjia Li +3
This paper presents a novel seven-channel optical measurement system for monitoring coil parasitic motion and mass position in the Tsinghua Tabletop Kibble balance. The system empl…
Design and Verification of a New Current Source for Tsinghua Tabletop Kibble Balance
Yuhan Ma, Kang Ma, Wei Zhao +3
This paper presents an ultra-stable current source tailored for the one-mode, two-phase (OMTP) measurement scheme in Tsinghua tabletop Kibble balances. To achieve simultaneous high…
Recent Advances in Tabletop Kibble Balance -- KBmini
Nanjia Li, Weibo Liu, Kang Ma +4
This paper presents recent advances in the KBmini Kibble balance, a tabletop system for E2-accuracy mass calibration up to 1 kg. The profile is characterized by manually se…
Status of the Tsinghua Tabletop Kibble Balance
Shisong Li, Weibo Liu, Nanjia Li +7
This paper reports on the status of the Tsinghua tabletop Kibble balance experiment, aiming to deliver a mass calibration instrument for kilogram realizations in accordance with th…
A Linearization of DFT Spectrum for Precision Power Measurement in Presence of Interharmonics
Jian Liu, Wei Zhao, Jianting Zhao +1
The presence of interharmonics in power systems can lead to asynchronous sampling, a phenomenon further aggravated by shifts in the fundamental frequency, which significantly degra…
Design of a Miniature Kibble Balance for Kilogram-Scale Mass Calibration -- KBmini
Shisong Li, Nanjia Li, Weibo Liu +3
Tabletop version Kibble balances are a significant developing trend for mass realizations following the revised International System of Units. A key innovation through the miniatur…
Self-Error Correcting Method for Magnetic-Array-Type Current Sensors in Multi-Core Cable Applications
Xiaohu Liu, Keyu Hou, Kang Ma +7
Data-driven methods enable online assessment of error states in magnetic-array-type current sensors, and long-term measurement stability can be enhanced through further self-error…
An Approach for Restoring Magnetic Field Uniformity in Openable BIPM-Type Kibble Balance Magnets
Nanjia Li, Weibo Liu, Yongchao Ma +3
The Kibble balance realizes the kilogram by linking mechanical and electrical quantities via a magnet system. In an improved BIPM-type magnet design by Tsinghua University, an open…
An Evaluation of External Magnetic Flux Error in Magnet-Moving Kibble balances
Yongchao Ma, Wei Zhao, Songling Huang +1
The magnet-moving measurement scheme in Kibble balances avoids displacing force-sensitive components, such as the weighing cell, and enables a broader magnetic profile measurement…
Metering Error Estimation of Fast-Charging Stations Using Charging Data Analytics
Kang Ma, Xiulan Liu, Xi Chen +5
Accurate electric energy metering (EEM) of fast charging stations (FCSs), serving as critical infrastructure in the electric vehicle (EV) industry and as significant carriers of ve…
Compressive Sensing Empirical Wavelet Transform for Frequency-Banded Power Measurement Considering Interharmonics
Jian Liu, Wei Zhao, Shisong Li
Power measurement algorithms based on Fourier transform are susceptible to errors caused by interharmonics, while wavelet transform algorithms are particularly sensitive to even ha…
Updates on the Tsinghua Tabletop Kibble Balance
Shisong Li, Yongchao Ma, Kang Ma +7
With the adoption of the revised International System of Units (SI), the Kibble balance has become a pivotal instrument for mass calibrations against the Planck constant, . One…
A Compact Magnet System for the Tsinghua Tabletop Kibble Balance
Yongchao Ma, Nanjia Li, Weibo Liu +4
Although the so-called magnetic geometrical factor, , of a Kibble balance does not appear in the Kibble equations, it offers the precision link between electrical and mechanica…
A Bi-polar Current Source with High Short-term Stability for Tsinghua Tabletop Kibble Balance
Kang Ma, Xiaohu Liu, Wei Zhao +2
A high-precision current source, capable of supporting weighing measurements with a relative uncertainty at the level, is essential for Kibble balance experiments. Howeve…
Progress on accurate measurement of the Planck constant: watt balance and counting atoms
Shisong Li, Zhonghua Zhang, Wei Zhao +2
The Planck constant is one of the most significant constants in quantum physics. Recently, the precision measurement of the numeral value of has been a hot issue due to its…