PROJECT TITLE :

A Novel Approach for Active Adhesion Control of High-Speed Trains Under Antiskid Constraints

ABSTRACT:

Wheel skid is extremely undesirable because it might endanger the safe operation of high-speed trains. How to avoid excessive wheel skid via a full of life adhesion management method represents an fascinating and difficult topic of research. During this work, we initial introduce the conditions of antiskid operation and formulate it as a constrained tracking control drawback, primarily based on which 2 model-primarily based antiskid slip velocity control laws are developed. Then, by applying 2 adaptive force observers to estimate the unknown and varying adhesion force and resistance, we develop an adaptive antiskid adhesion management scheme. The novelty of the proposed method is that management errors of the closed-loop system are used to online update the observer parameters, such that the predefined management precision will be ensured with the proposed observer-primarily based adhesion management. To accommodate the constrained antiskid management, a barrier Lyapunov operate is constructed, and therefore the effectiveness of the proposed control scheme is theoretically authenticated with confirmation by numerical simulation.