ABSTRACT
With the rapid development of the modem automobile industry,great importancehas been paid to the safety of the vehicle,especially the heavy trucks working in themountain or in the mine area and the city buses driving in the congested roads.By the analysis ofthe use property ofthe current clutch,the necessity ofusing theretarders is clear in the heavy trucks and the city buses.
Throuthe comparison ofthe current different retarders,the advantage and disadvantage of the eddy currentbrake is introduced.How the mathematical model of the eddy current brake in theliterature is discussed,then the paper illustrates the difference of the results of thecalculation and the experiment data,and discuss the reason why it is arise.The paperintroduces the usual method to solve the question by using the finite element methodin the world currently.
Key words the eddy;current brake;structure;design;