Subaru uses NI hardware-in-the-loop technology to simulate electric vehicle testing, reducing test development time by 90%
On April 11, 2018, NI (National Instruments, National Instruments) as a supplier committed to providing engineers and scientists with platform-based system solutions to meet the world's most stringent engineering challenges, announced that major automotive manufacturing such as Subaru Vendors are using NI hardware-in-the-loop (HIL) technology to simulate actual road conditions in electric vehicle testing to eliminate testing time and costs associated with environmental factors.
In the past, engineers used finished cars on test roads or on public roads to conduct vehicle tests to detect vehicle performance and safety responses. However, certain restrictions (such as weather and rough road conditions) may make it difficult for engineers to carry out repeatable tests on the road in time. In addition, since many of the subsystems of the electric vehicle are dependent on each other, the construction of the electric vehicle is extremely complicated. This complexity combined with the ever-shortening development cycle and cost has left automotive test engineers faced with severe challenges.
To solve these problems, Subaru replaces the actual road conditions for verification testing with NIHIL simulation solutions based on NIPXI products and LabVIEW software. With the HIL system, Subaru can eliminate environmental factors and conduct efficient and thorough testing of the vehicle's embedded controllers in a virtual environment before the actual diagnosis of the entire system.
"With the NIPXI product and LabVIEW, we can fully implement a custom HIL system in one to two weeks and develop the software we need," said Daisuke Umiguchi of the Subaru Electric Power Plant Research and Experimental Division. "This helps us reduce the cost of product procurement to only about one-third of other solutions, and because we are familiar with LabVIEW, our software development costs are only about one-sixth more than hiring external developers."
Subaru plans to use the test system for final quality checks during the final stages of electric car development and eventually extend its application to all types of cars. By adopting this system, Subaru expects that labor time will be reduced by half compared with traditional methods.
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