Rethinking System Validation: Arnold NextG Integrates MOTEON’s Mobile Motor Test Bench into NX NextMotion Testing Architecture

NX NextMotion serves as the core controller in Arnold NextG’s modular Drive-by-Wire platform.
The system features a quad-redundant safety architecture, is fully ASIL D-compliant, and optimized for ultra-low FIT rates. It also supports integration with a wide range of vehicle architectures.
With the mMTB, control paths for steering, braking, and propulsion can now be simulated, measured, and evaluated in isolation – well before physical components or vehicles are available.

From weeks to hours – test cycles redefined

“The mMTB acts like a digital twin of our real-world application – but more controllable, fault-tolerant, and ready to deploy,” explains Kevin Arnold, CEO of Arnold NextG. “It allows us to observe control responses, edge cases, load variations, and timing behavior in detail – and do it in hours, not weeks.”

Thanks to its open interface design (CAN A/B, PWM, analog/digital), full Python scripting access, and ASAM XIL support, the mMTB enables complete test automation. This makes it ideal for regression testing, CI/CD pipelines, or model-based validation. The platform supports fault injection, parameter variation, and virtual load modeling – key features for compliance with ISO 26262, ISO 21434, IEC 61508, and UNECE R79.

Scalable platform integration – no vehicle required

Arnold’s engineering team uses the mMTB not only for software module validation but increasingly for full system-level scenarios – such as OTA update evaluation, vehicle dynamics control loops, and fault-state safety behavior. Tests are run on real hardware, without requiring full vehicle setups – a significant efficiency gain during early-stage industrialization.

“Arnold NextG is pioneering the development of safe and scalable vehicle control platforms,” says Philipp Würfel, CMO at MOTEON GmbH. “We’re proud that our mMTB is helping their engineers bring these innovations to life – faster, safer, and with greater precision.”

The collaboration is part of a long-term validation strategy:

With the integration of the mMTB, Arnold NextG is not only optimizing its current testing capabilities, but also laying the foundation for a scalable, real-time validation framework for future platform development. The system’s safety-first design, modular expandability, and seamless integration into the company’s development workflow make it a strategic asset in the safety validation of Drive-by-Wire systems.

“For us, this isn’t just a test bench – it’s an accelerator for safe innovation,” adds Kevin Arnold. “In fail-operational systems, every insight counts – and the sooner, the better.”