Saturday, 29 March 2014

Hybrid Dynamic Simulation Approach in Automotive Technology

Vehicle developers today need to face complex challenges by validating the latest innovations in automotive technology, having numerous variants.

The need today is to meet the requirements using minimal resources and complete projects within tight deadlines.

So, What is Hybrid Dynamic Simulation approach?

Hybrid Dynamic Simulation

It signifies integration involving virtual models and physical tests to enhance and accelerate the development processes traditionally followed. However, it is important to remember that such simulation comes with a wide range of complex challenges that the vehicle developers need to face and resolve successfully.


What are the Challenges?


The major vertical that the developers face today consists of situations where test physical rig and virtual models aren't able to interact as desired in real-time. Innovative techniques related to hybrid simulation offer efficient and practical results, increasing the scope of application across automotive industry.


So What are the Benefits?


In spite of the basic challenges faced by the vehicle developers, one cannot deny the high benefits associated with hybrid dynamic simulation approach. Manufacturers worldwide are realizing its capabilities since such simulation helps to validate subsystems and components quite early in development cycle. Earlier however, this was quite a complex process where accuracy of results was never possible easily.


Difficulties with Traditional Methods


Earlier, configuration of tests was possible for application of loads acquired from vehicle prototype and real part measurements. However, such results were available to the developers later on during development process, making resolution of discovered problems quite difficult and expensive. Test loads adapted from platforms and vehicles similar to each other compromise test accuracy, affecting overall component design quality. Another way is to predict test loads from overall virtual environments, but here again, precision of results simply could not be guaranteed.


How Hybrid Simulation Helps?


The only way to deal effectively with the limitations related to traditional methods is switching to hybrid dynamic simulation approach. Such approach easily solves the related problems because it effectively combines the virtual with the physical, allowing configuration of lab tests for components and subsystems early.


This in turn effectively compresses the cycle of development. Through successful hybrid simulation, it is possible to go for precise lab tests minus acquisition of field data besides improving or thoroughly understanding the various model correlations. Now you can also go for validation of test specimens without predicting loads or force fitting.

Hybrid Dynamic Simulation


Hybrid dynamic simulation approach signifies that the physical components can now replace various selected components to offer automotive dynamic simulation in real-time. Here are physical to virtual coupling occurs in real-time so that the dynamic simulation and can occur in hybrid environment.


However, real-time requirements can place undue pressure on test rigs and models. One way to deal with limitations related to the real-time requirements of hybrid dynamic simulation approach is possible through iterative approach. This happens through developing solutions that satisfy motion equations.


Resultantly, the virtual and physical systems are now able to run in a sequential manner in the form of an open loop system avoiding requirements of real-time running.

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