工程设计学报2017，Vol.24Issue(3)：303-310,8.DOI:10.3785/j.issn.1006-754X.2017.03.009
带式输送机用直线电机静动态特性试验与分析
Experimental and theoretical analysis of static and dynamic characteristic of linear motor used in belt conveyor
摘要
Abstract
Multi-motor driving plays a crucial role in the way of high-speed ,long-distance and large-capacity for conveying equipment .Because of the advantages of no friction ,no rotating drive components ,arbitrary arrangement along the conveyor length direction and the reduction of the characteristics of belt tension ,the linear motor becomes an ideal middle drive form in the high performance special belt conveyor .The merits and demerits of linear motor were compared with rotary motor based on its fundamental principle .The type of secondary structure was determined by comparative analysis for linear motor used in belt conveyor .And the secondary structure of belt was designed .According to the closed bulk handing material testing system ,the test rig of static and dynamic characteristics were established .The thrust (tension difference of belt) of the linear motor was obtained using the Euler formula and the point by point tension method .Mean-while ,the proportional relationship between voltage and thrust was verified by experimental as well as air-gap and thrust .And the dynamic test (mechanical properties test) was carried out in-directly .Then the mathematical relationship between the thrust and belt speed was obtained . Moreover ,the pulling force of stable running and starting process of belt were simulated based on Belt Analyst software and they also were compared with the experimental results .The experi-mental results showed that the thrust was proportional to the square of the voltage and the square of the reciprocal of air-gap respectively .It was also concluded that the theoretical curve between voltage and thrust (as well as air-gap and thrust) was consistent with experiment value .The rati-o of thrust and input power on the linear motor was large ,and the smaller the air-gap ,the grea-ter the ratio .In addition ,compared with rotary motor ,the linear motor had no critical speed , and it represented very soft for its mechanical properties .Ultimately ,the simulation value of pul-ling force of stable running was basically consistent with the test value and all relative error with-in 2% .But the error was larger in starting-up process ,which indirectly indicated the importance of ensuring the uniform of air-gap .This work can be applicable to the practical application and improvements for multi-motor coordination driving the ultra-long distance belt conveyor .关键词
带式输送机/直线电机/电机设计/静动态试验/特性分析Key words
belt conveyor/linear motor/motor design/static and dynamic test/characteristic a-naly sis分类
机械制造引用本文复制引用
王尧,李淑君,赵文玉,孟文俊..带式输送机用直线电机静动态特性试验与分析[J].工程设计学报,2017,24(3):303-310,8.基金项目
国家自然科学基金面上项目(51575370 ) （51575370 ）
山西省煤基重点科技攻关项目(M J2014-09 ,M J2014-02 ) （M J2014-09 ,M J2014-02 ）
山西省回国留学人员科研资助项目(2016-093 ) （2016-093 ）
山西省研究生优秀创新项目 (2016BY134 ) （2016BY134 ）
山西省研究生教育创新项目(2015BY49)、晋城市科技计划项目(201501004-14) （2015BY49）
