| Abstract |
The modernization project of trams in Tallinn started
in 1997. The main reason to start this project was a poor
technical condition of electrical equipment on trams. The
project was started by measuring tram drives load and efficiency
in real traffic conditions. During the second stage, a new
intelligent traction drive, economically feasible for Tallinn
trams was developed (in 2000). During the third stage (started
2002), an intelligent diagnostic system will be developed.
This paper reviews research and development of a new
intelligent control and diagnostic system. System operation
modes and their diagnostic possibilities and methods were
studied during the software development. Although the new
system has shown good reliability, diagnostics and information
systems will be an important issue in the future. In view of the
increasing complexity of tram equipment, the diagnostics has
become exceedingly important. To provide safe protection for
the equipment and indication, in storage and evaluation of
faults, one of the most important functions is the rapid
pinpointing of defective systems, devices or components. |
