General Motors (GM) is a global company focused on advancing an all-electric and autonomous transportation future that is inclusive and accessible to all.
To enable its vision of zero crashes, zero emissions, and zero congestion, the enterprise is taking steps to create a foundation of electric and autonomous vehicle technology and connected product offerings that are available at scale.
Leveraging more than a hundred years of engineering and manufacturing experience, GM is well positioned to design, engineer, and produce EVs for every style and price point, and are rapidly building a competitive advantage in batteries, software, vehicle integration, and customer experience.
At the heart of this strategy is the Ultium Platform. Designed to be modular, it has the versatility and capability to power everything ranging from sedans to crossovers, high-performance cars to full-size trucks, and even autonomous vehicles for both commercial and retail applications.
In addition to its commercial vehicle and product lineup, GM is taking a holistic approach to enabling an all-electric, connected, and autonomous future by investing heavily in EV infrastructure, research and development, alternative energy solutions, and even extending zero-tailpipe emission technology to other industries and applications beyond automotive.
The company has publicly announced goals to launch more than 30 new electric vehicles globally by 2025, eliminate tailpipe emissions on light duty vehicles by 2035, and become carbon neutral in its global products and operations by 2040.
General Motors, its subsidiaries and its joint venture entities sell vehicles under the Chevrolet, Buick, GMC, Cadillac, Baojun and Wuling brands.
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Video + Slides
Mr. Carlos Agudelo, Link Engineering, UNITED STATES
Mr. Marco Zessinger, Link Europe GmbH, GERMANY
Mr. David Antanaitis, General Motors, UNITED STATES
Mr. Michael Peperhowe, dSPACE GmbH, GERMANY
Current standards like the SAE J2789 have provisions for adjusting the brake inertia for regenerative braking systems. However, a comprehensive method to implement the correct brake blending during inertia dynamometer testing in real-time remains elusive. With Hybrid and Battery Electric Vehicles (BEV) propulsion systems on the rise, the need to develop friction couples and braking systems is ever increasing. To better understand new phenomena related to low-temperature burnish, corrosion, brake balance, NVH, and brake emissions, the automotive industry needs to rely on laboratory testing using inertia dynamometers. The main innovation on the approach presented is the ability to have an actual (ego) brake corner in the test environment to provide real-time torque and temperature response during testing,
This oral-only presentation elaborates on critical aspects of HiL simulation for BEV brake blending. What makes this work unique is the focus on the development of working software and working hardware using software ECUs for the battery controller, particular communication protocols with high-speed scenario simulation, and commercially available hardware (HiL and standards dynamometer platforms), and application to real-life cases and driving cycles. The work presents the software and hardware modules; the algorithms to control the ego brake corner; the communication packets; events, and scenario triggers; and the automation of a test cycle – with practical examples. These developments can support early system evaluation, simulation of static and dynamic scenarios, and expand to include multiple ego brake corners.
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