Truck & Off-Highway Engineering - August 2023 - 9

TECHNICAL INNOVATIONS
are changing their strategies to cope with the expanding
growth of software. Martin Zeilinger, head of Commercial
Vehicle Development at Hyundai Motor Co., stated that more
and more data is flowing through vehicles, often with timesensitive
requirements. That's prompted Hyundai to shift to a
zonal electrical platform in which groups of processors and
sensors are combined to feed data to a centralized controller.
That simplifies the architecture and reduces communications,
but these changes require a new design strategy.
" It will be a paradigm shift for us to a software-defined vehicle
strategy, " Zeilinger said. " Functionality will be driven by
software. We'll use more HIL to test and move to more standardization
in our tool chain. "
Software-defined CVs
The explosion of software is not limited to passenger cars,
which could see software soar from around 100 million lines
of code to 300 million by 2030. Commercial vehicles also are
becoming software-defined vehicles.
Strict adherence to scheduling is among Daimler Truck's
strategies for managing this growth of software. The company
currently has two major releases each year, with seven
so-called " sprints " for developing new features. " It's mandatory
to use release management for all software releases. If
you don't have a mandatory release schedule, management
can become a nightmare, " said Thomas Bardelang, manager
of high-voltage systems at Daimler Truck.
The complexity of new vehicles extends to systems that
often are overlooked in discussions of overall vehicle performance.
Reduction in vehicle noise levels poses a challenge for
those who design smaller systems in vehicle cockpits. Philipp
Hugelmann of Robert Bosch said that using HIL made it possible
to dramatically cut noise levels for equipment such as
window lifts, wipers and seat drives.
" In one test, we reduced noise by 10 dB. The event went
from a very annoying noise to a noise you could barely hear.
After setup, we needed only three hours for this optimization, "
said Hugelmann, a system-validation engineer at Bosch.
Rise of AI
Artificial intelligence is becoming more important in the development
and management of vehicle software. Jürgen
Bortolazzi, head of driver assistance and automated driving
at Porsche, said it offers much potential for both end products
and in vehicle design.
" AI has huge potential in process development and our tool
environment, " he said. " We already have some AI tools. We're
using Mobileye software and AI for some ADAS systems. "
University researchers are exploring ways that AI and neural
networks can help vehicles adapt to changes in their operating
environment. Neural networks can allow systems to
change operating parameters as needed, according to
Johannes Betz, professorship for autonomous vehicle systems,
Technical University Munich. His team used HIL to develop
open-source software that can be used to develop
TRUCK & OFF-HIGHWAY ENGINEERING
August 2023 9
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