Design and Initial Test of the Weighing Unit for Tsinghua Tabletop Kibble Balance
Fuente:
arXiv
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| Autori principali: | , , , , , , |
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| Natura: | Preprint |
| Pubblicazione: |
2026
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| Soggetti: | |
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| _version_ | 1866916025424936960 |
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| author | Liu, Weibo Li, Nanjia Qian, Lushuai Zhao, Wei Peng, Lisha Huang, Songling Li, Shisong |
| author_facet | Liu, Weibo Li, Nanjia Qian, Lushuai Zhao, Wei Peng, Lisha Huang, Songling Li, Shisong |
| contents | 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 weighing cell, with a major modification to the feedback control loop. The redesigned loop incorporates a capacitive displacement sensor for high-resolution position detection and a novel PID control strategy that ensures both fast dynamic response and high static stability. Initial characterization results demonstrate a repeatability better than 0.1 mg in air for 1 kg mass exchanges, validating the system's potential for high-accuracy mass metrology in Kibble balances. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2605_19203 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | Design and Initial Test of the Weighing Unit for Tsinghua Tabletop Kibble Balance Liu, Weibo Li, Nanjia Qian, Lushuai Zhao, Wei Peng, Lisha Huang, Songling Li, Shisong Instrumentation and Detectors 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 weighing cell, with a major modification to the feedback control loop. The redesigned loop incorporates a capacitive displacement sensor for high-resolution position detection and a novel PID control strategy that ensures both fast dynamic response and high static stability. Initial characterization results demonstrate a repeatability better than 0.1 mg in air for 1 kg mass exchanges, validating the system's potential for high-accuracy mass metrology in Kibble balances. |
| title | Design and Initial Test of the Weighing Unit for Tsinghua Tabletop Kibble Balance |
| topic | Instrumentation and Detectors |
| url | https://arxiv.org/abs/2605.19203 |