Realization of anti-slip/slide control in railway motor vehicles by slip velocity feedback torque control

When railway motor vehicles slip or slide, a high readhesion characteristic is very important to obtain good traction and acceleration. In this paper, the authors examine the following effects on slip/slide velocity characteristics: (1) effects of the difference between control methods; (2) effects of the difference between motor excitation methods; and (3) effects of various elements on slip/slide velocity detection under slip velocity feedback torque control. They find that the current feedback acceleration method produces a great divergence in slip/slide velocity, and when slip velocity feedback torque control is added, slip/slide wheels can readhere under any acceleration methods with an appropriate choice of parameters. Improvement of rapid and precise velocity detection is important to realize slip velocity feedback torque control