Accelerated verification method for the reliability of the motor drive mechanism of the corn precision seed-metering device
文献类型： 外文期刊
作者： Wen, Changkai 1 ; Zhang, Jing 4 ; Zheng, Kan 4 ; Li, Hanqing 1 ; Ling, Lin 1 ; Meng, Zhijun 1 ; Fu, Weiqiang 1 ; Yan, Bingxin 1 ;
作者机构： 1.Beijing Acad Agr & Forestry Sci, Res Ctr Intelligent Equipment, Beijing 100097, Peoples R China
2.Natl Engn Res Ctr Intelligent Equipment Agr, Beijing 100097, Peoples R China
3.State Key Lab Intelligent Agr Power Equipment, Beijing 100097, Peoples R China
4.Huazhong Agr Univ, Coll Engn, Wuhan 430070, Peoples R China
关键词： Motor drive mechanism; Reliability analysis; Accelerated testing; Field vibration; Corrected acceleration factor
期刊名称：COMPUTERS AND ELECTRONICS IN AGRICULTURE （ 影响因子：8.3； 五年影响因子：8.3 ）
ISSN： 0168-1699
年卷期： 2023 年 212 卷
页码：
收录情况： SCI
摘要： The current reliability analysis of the motor drive mechanism of the corn precision seed-metering device has yet to be validated by accelerated testing. Furthermore, the bench test used for verification does not consider the effect of vibration loads on the seeder during field operation. Therefore, this paper proposes an accelerated reliability verification method for the motor drive mechanism of the corn precision seed-metering device. Firstly, reliability theory is used to analyze the importance degree of motor drive system subcomponents. Then, various field tests were carried out to collect vibration and temperature rise data, to analyze the effect of field vibration on the motor drive mechanism, and to propose the vibration influence parameter k. Finally, an indoor test bench was set up, the formula of the acceleration factor A was modified, and accelerated verification tests on 96 motors were carried out to verify the method's accuracy. Reliability analysis showed that the motor's importance degree was 79.31%, and the Hall switch was 19.78%. The field tests showed that the mean values of the vibration influence parameter k for the four seeding conditions (different seeding speeds) were 0.155, 0.186, 0.207 and 0.228. The accelerated tests showed that the absolute error between the accelerated verification test and the reliability analysis was 1.1% and 3.3% in importance degree and average life, respectively. This paper provided a solution for the reliability study and accelerated verification of the corn electric drive seed discharge mechanism.
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