Journal
IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS
Volume 69, Issue 3, Pages 2728-2736Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TIE.2021.3065619
Keywords
Lubricating oils; Lubrication; Aerospace electronics; Piezoelectric actuators; Vacuum systems; Valves; Copper; Active lubrication; bearing; oil droplet; piezoelectric microjet; space shafting
Categories
Funding
- National Natural Science Foundation of China [51905134]
- Natural Science Foundation of Heilongjiang Province, China [LH2019E045]
- China Postdoctoral Science Foundation [2018M641816]
- Fundamental Research Funds for the Central Universities [HIT NSRIF.2020034]
Ask authors/readers for more resources
This article introduces an active lubrication system for space equipment bearings, utilizing a piezoelectric microjet for efficient oil distribution. The system features precise pulse control, long service life, and integration with existing bearing systems, meeting diverse lubrication requirements and enabling on-demand lubrication.
Lubrication failure of bearing is one of the important factors that limit the service life of the space shafting system. Due to the strict restrictions on the volume and weight, the traditional oil supply devices are difficult to meet the requirements of space active lubrication. In this article, we propose a piezoelectric microjet, which can achieve active lubricating for bearings of space equipment serving in a harsh environment. A constant pressure oil storage system, with a storage capacity of more than 4 g and can achieve vacuum oil storage, is proposed. Control accuracy of 0.012 mu L per pulse is obtained and a theoretical service life of more than 20 years can be achieved. The whole active lubricating system is embedded in the bearing system, which has no effect on the normal operating of the original bearing system and almost creates no mass increment of the bearing system. The methods of controlling the characteristics of the ejected oil droplet are proposed to meet different lubrication requirements. Combined with the monitoring of bearing temperature and friction torque, active lubrication on demand can be realized. This work can provide important references for prolonging the service life of space bearing.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available