Modeling a magneto-rheological soft starter for use with belt conveyors  

作　　者：Tian Zuzhi Hou Youfu 

机构地区：[1]School of Mechanical and Electrical Engineering, China University of Mining & Technology, Xuzhou 221008, China

出　　处：《International Journal of Mining Science and Technology》2012年第3期385-389,共5页矿业科学技术学报（英文版）

基　　金：supported by the National Natural Science Foundation of China (Nos. 50975275 and 51075386)

摘　　要：The theory of magnetic circuit design, the constitutive equations of a magneto-theological fluid, and the load properties of belt conveyors were used to design a magneto-rheological soft starter test-bed. The magnetic field distribution in the working gap was analyzed and the current-speed relationship was investigated. A mathematical model for the time response was deduced. The results show that a linear relationship between current and magnetic field is seen when the magnetic materials are not saturated and the magnetic field is uniform in the working section. The rotation speed of the driven shaft changes linearly with increasing time. The response is rapid and can be as short as milliseconds. This meets the starting requirements of belt conveyors.The theory of magnetic circuit design, the constitutive equations of a magneto-rheological fluid, and the load properties of belt conveyors were used to design a magneto-rheological soft starter test-bed. The magnetic field distribution in the working gap was analyzed and the current-speed relationship was investigated. A mathematical model for the time response was deduced. The results show that a linear relationship between current and magnetic field is seen when the magnetic materials are not saturated and the magnetic field is uniform in the working section. The rotation speed of the driven shaft changes linearly with increasing time. The response is rapid and can be as short as milliseconds. This meets the starting requirements of belt conveyors.

关 键 词：Magneto-theological softer starterBelt conveyorsControl modelTime response 

分 类 号：TM573[电气工程—电器] TH222[机械工程—机械制造及自动化]