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Supervised by Ministry of Industry and Information Technology of The People''s Republic of China Sponsored by Harbin Institute of Technology Editor-in-chief Yu Zhou ISSNISSN 1005-9113 CNCN 23-1378/T

Related citation:Xin Huo,Shuangpeng Zheng,Yu Yao,Weishan Chen.A Practical Strategy of Unbalance Identification and Correction for 2-DOF Precision Centrifuges[J].Journal of Harbin Institute Of Technology(New Series),2018,25(1):29-38.DOI:10.11916/j.issn.1005-9113.16083.
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A Practical Strategy of Unbalance Identification and Correction for 2-DOF Precision Centrifuges
Xin Huo1, Shuangpeng Zheng1, Yu Yao1,Weishan Chen2
(1.Control and Simulation Center, School of Astronautics, Harbin Institute of Technology, Harbin 150080, China;2.School of Mechatronics Engineering, Harbin Institute of Technology, Harbin 150080, China)
Unbalance existing in the mechanical systems is one of the most common causes which leads to unexpected vibration, nonsmooth motions, uncertain dynamics and even instability. In this paper, the problem of unbalance identification and correction is investigated for the countershaft system of a precision centrifuge with two degrees of freedom. According to the characteristics of the load under test installed on the countershaft, a gradual subdivision algorithm is proposed to identify the phase of the unbalance, and its amplitude is calculated by using a space vector algorithm, where the vibration information of the mainshaft system is obtained by utilizing two axis-layout displacement transducers installed associated to the mainshaft. Based on ADAMS software, some numerical simulations are presented and compared, and further, the validity of the strategy is demonstrated by experimental examples.
Key words:  dynamic unbalance  identification and correction  precision centrifuge  countershaft system  ADAMS
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(1. 哈尔滨工业大学,航天学院 控制与仿真中心,哈尔滨 150080;

2. 哈尔滨工业大学,机械工程学院,哈尔滨 150080)