Research Of The Distributed Logic Control And Detecting Unit In Electric Locomotive

Along with the locomotive speed of continuously increase, reliability, safety and high efficiency is demanded. Relay control system of the electric locomotive will is less and less adapt to the railway high speed and heavy load. The author researches the distributed logic control and detecting unit of the SS3B electric locomotive. On the other hand, make use of power MOS and IGBT electric power electronics device instead of the middle relay; On the other hand, realizes with the locomotive logic interlock and failure diagnosis by software. The technique line and developing process of the SS3B electric locomotive distributed logic control and detecting unit is introduced from a few aspects in the thesis.(1) Investigating movement circumstance and existing problem of the electric locomotive relay control system by the scene.(2) Understand the development's trend and equipments of the electric locomotive control technique from the domestic and international.(3) Synthesize the related information, and bring up design thought of the electric locomotive distributed logic control anddetecting unit.(4) Choosing the low cost and dependable fieldbus- CAN.(5) Deducing the logic control unit trapezoid diagram, and establish the control model.(6) According to the related technique standard, design and manufacture the prototype of the logic control unit.(7) Experimenting verification the design accuracy, and perfecting function of the prototype in the laboratory.(8) Running and examining the electric locomotive distributed logic control with mounting on SS3B electric locomotive.