Research on in-situ measurement methods for lunar dust surface potential under ultraviolet irradiation
10.16289/j.cnki.1002-0837.2025.02011
- VernacularTitle:紫外辐照下模拟月尘的表面电位原位测量方法
- Author:
Liyong CAO
1
;
Jihong YAN
;
Dandan JU
;
Yunlong LI
;
Lifang LI
Author Information
1. 哈尔滨工业大学机电工程学院,哈尔滨 150000
- Keywords:
lunar dust;
ultraviolet irradiation;
in-situ measurement;
vibrating capacitor technology;
charging and discharging experiments
- From:Space Medicine & Medical Engineering
2025;36(2):148-151
- CountryChina
- Language:Chinese
-
Abstract:
In ground-based experiments,ultraviolet irradiation is used to charge simulated lunar dust,aiming to quantitatively study its charging and discharging behavior in space environments.However,due to factors such as vacuum and dust disturbances,the charging and discharging processes of lunar dust are difficult to measure accurately through contact methods.Therefore,this paper designs and constructs a non-contact,in-situ surface potential measurement system based on the principle of vibrating capacitance,suitable for vacuum environments.The system combines moving average and standard deviation methods for data filtering and introduces a weighted KNN algorithm to predict and compensate for missing or anomalous data,thereby improving measurement accuracy and stability.Two typical simulated lunar dust samples,TYII-2 and CLRS-1A,were selected for charging and discharging experiments under ultraviolet irradiation.The surface potential distribution was obtained in real-time using an in-situ motion mechanism equipped with a vibrating capacitance sensor.The results show significant differences in the charging response and dissipation characteristics of the samples with different particle size distributions.
