Theoretical analysis of Wheel Slide Protection controllers for rail vehicles

The subject of this paper is a theoretical analysis of Wheel Slide Protection (WSP) controllers for rail vehicles. First of all a principle of operation of WSP systems has been described and problems concerning designing WSP controllers have been specified. Then structure of a WSP controller compared to a classic control diagram is presented. Various types of WSP controllers are compared and their advantages and disadvantages are presented. Conclusions concerning adopting structure and parameters of controllers are drawn. Further investigations aimed at facilitating development of efficient WSP controllers are proposed.