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This product utilizes early Electrically Oriented Simulation results Data (EDA
related data) for in-assembly-plant optimization of a Mechanical /
Manufacture Oriented Process (MDA) for loads such as Turn Signals, Park
Lamps, Front and Rear Wipers, etc. The product enhances the quality and
accuracy of such data in assembly plants, and dramatically speeds up the
process, and at the same time lowers the cost tremendously. In addition,
this product can establish a base line for such activities for any OEM or FSS, and can be also used to train electrical, mechanical, and manufacturing
engineers to utilize simulation data and to work synchronously.
Currently, a delayed
experimentally based statistical method is employed to determine the current
limits of specific loads in an automobile. For each vehicle program, a set
of measurements is being conducted to find the lower and upper current
limits of any specific load. Loads include phenomena such as Turn Signals,
Park Lamps, Front and Rear Wipers, etc. Generating current limits (upper and
lower) by using delayed experimental statistical method is a very time
consuming and tedious task and is not based on a scientific analysis of load
currents (low quality). Simulation is a perfect tool to determine these
limits based on scientific analysis and, more importantly, is a faster
fashion. Also if any change is made in any vehicle program, this change can
be added to the simulation files for that vehicle, very quickly. It can then be simulated in much less time than the statistical method.
For
each test, the CBT tester uses a trigger value to start its operation. Since
this value is the starting point of any new measurement, it is a critical value
and must be determined accurately and preferably by simulation (if component
models are specific). The average current value measured by CBT tester
varies between lower and higher limits. Having lower/upper limits are due to
variations in component tolerances, minor differences between wire lengths,
battery voltage changes, and different mechanical loads for
electromechanical devices. Utilizing CAE modeling/simulation, and analyzing
the results, the lower and upper limits are obtained more accurate, faster,
and with lower cost. Because modeling / simulation process is used,
modification and altering of the characteristics such as battery voltage as
well as changing the load on an electromechanical device are much easier.
The table below illustrates simulation results of some important characteristics
for the CBT of different loads.
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