Hardware-in-the-Loop. Het implementeren van een 'hardware component' in een
simulatie van een transportband met behulp van een PC.
Report 2003.TL.6815, Transport Engineering and Logistics.
To investigate the possibilities of the "Hardware in the loop"-concept, a
simulation will be developed to control an existing laboratory set up of a
conveyor. A short summary of the available components is given: the conveyor,
the Data Acquisition card and the software (Delphi & Tomas).
A simple conveyor model has been developed as a starting point for the
simulation. The control of the hardware will be implemented into this model.
The model incorporates the possibility to simulate a single conveyor or to run
a simulation of several conveyors, with equal length and speed. The conveyors
are connected end-to-front. The simulation will generate 'boxes' to simulate
and control the conveyor process.
To determine the location of the boxes on the 'real' conveyor, the measured
conveyor speed is used to calculate the progress along the conveyor length,
in fact integrating the speed over time. Therefore the simulation must run at
'normal time'. There are several ways to achieve this, however the software is
already equipped with a Tomasserver function. This will synchronize the
simulation with the 'normal' time, at preset intervals.
Developed as a visualization aid and a means to check the proper functioning
of the model, an animation shows the modelled conveyor(s) and current location
of the boxes. The final program runs the simulation and controls the conveyor
set up. There is a visual indication, which shows if the conveyor is faster or
slower (lagging) to its simulated counterpart.
Reports on Transport Engineering and Logistics (in Dutch)
, TU Delft