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Real Time Simulator
The Real Time Simulator, RTS 1.4 is a speciality test system designed to test Bombardier Transportation’s MITRAC Series Digital Control Units. This system is used to control the dSPACE signal generation hardware which generates several analog and digital events, and helps to carry out real time simulation tests. The RTS interface is designed to allow quick changeover between different project models by making use of swappable pre-wired modules. The Drive Control Unit – DCU-II – receives the signals from RTS 1.4 in an amplified or conditioned form, and perceives them as inputs from transducers, etc. The program in DCU-II takes decisions on the prevailing real time condition and generates responses accordingly. The integrity of stimulus and response helps to establish that the system is performing as expected. The system mainly consists of dSPACE as a simulation hardware, dSPACE wire wrap board, CREST Interface, DCU-II wire wrap board, and DCU-II as a Device-Under-Test.

System Capabilities

  • The analog and digital inputs and outputs available on dSPACE hardware are conditioned to suit the input-output levels of MITRAC Series DCU-IIs
  • The interfacing system has conditioning electronics to handle different types of signals as listed below:
    • 32 DAC channels
    • 96 digital I/O channels
    • 32 PWM channels
    • 16 waveform channels
    • 20 PT-100 channels
    • 40 optical channels
and many more, as per the requirements


  • Well engineered interfacing hardware ensures mechanical and electrical robustness, as well as, accuracy, stability and repeatability of electrical parameters
  • dSPACE wire wrap board provides connection flexibility for all connections between dSPACE and CREST Interface
  • In-built auxiliary power supplies are used to power analog amplification channels
  • Highly accurate, low drift analog amplifiers are used for signal amplification
  • The system is housed in a compact 36U DIN standard rack having
  • The system is built to conform to DIN 41494 standard for easy maintenance and upgrading