SLIPPIN-SKIDDING CONTROL SYSTEM FOR ELECTRIC RAILCAR

摘要

PURPOSE: To conduct slipping.skidding control of an electric railcar having excellent adhesion performance by always employing a system for sensing slipping.skidding of wheels by pulse sensors coupled directly to a motor and a system for sensing slipping.skidding by comparison of pulse sensors coupled directly to a driven wheel and a motor. ;CONSTITUTION: An output frequency f_0.1-f_0n from a pulse sensor 4 coupled directly to a motor 2 is picked up by a slip detector 6 to obtain a speed of an induction motor shaft (m shaft). An output frequency fT of a pulse sensor 4' of a driven wheel (T shaft) 5 is also picked up by a slip detector 6, compared with the speed of the m shaft to judge slipping.skidding. Simultaneously, the slipping.skidding is also judged from a timing change of the frequency of the sensor 4. As a result, since a delay of the detection is prevented and inability to detect long time slipping and entire shaft slipping time of set values or less can be prevented, an acceleration of an electric railcar can be increased, and controllability of adhesive performance can be remarkably improved.;COPYRIGHT: (C)1994,JPO&Japio