Integrating a Dual-Axle Dynamometer with an HIL System to Enhance Vehicle Performance and Safety

Chroma ATE Inc., in collaboration with National Taiwan University Racing Team (NTU Racing), presented novel EV control testing technology and research at the 2026 SAE WCX World Congress Experience. The presentation highlighted the successful validation of Torque Vectoring (TV) and Traction Control (TC) strategies through the integration of a dual-axle dynamometer and a real-time hardware-in-the-loop (HIL) system, enabling substantial improvements in vehicle dynamics and driving safety.

WCX, produced by SAE International, is a premier global conference for automotive engineering and technology, covering key areas such as vehicle platforms, system integration, test and validation, safety, and reliability. On April 15, 2026, Chroma ATE presented its findings at WCX 2026 in Detroit, USA, and co-published a research paper with NTU Racing highlighting the practical validation capabilities of EV control testing technology.

The study centered on Chroma ATE’s dual-axle dynamometer and HIL test platform, which was combined with NTU Racing’s in-house developed Formula SAE electric race car to establish a comprehensive system-level test and validation environment. Using a CarSim driving model and CAN bus communication, the platform simulates real-world driving scenarios in which the vehicle control unit (VCU) computes and regulates the output torque of dual motors in real time, enabling engineers to validate and optimize control strategies.

The system is capable of replicating a wide range of dynamic driving scenarios within a laboratory setting, allowing vehicle control strategies to be validated before whole-vehicle testing. This significantly reduces testing risk while improving development efficiency. Compared to conventional single-axle test platforms, the dual-axle setup can simulate left-right wheel dynamics and asymmetric operating conditions. This allows for more accurate validation of torque distribution and related control strategies and enhances overall system reliability.

Commenting on the presentation, Chroma ATE Business Group President David Yang said, “By integrating our dual-axle dynamometer with an HIL system, Chroma continues to strengthen its EV control testing capabilities. Our collaboration with National Taiwan University Racing Team also demonstrates how industry and academia can work together to bring innovative technologies to real-world applications.”

This technology was developed as part of Chroma ATE's "EV Dual-Axle Dynamometer and HIL Technology R&D Project," with support from the Ministry of Economic Affairs’ A+ Enterprise Innovation and R&D Excellence Program. Through close collaboration with academia, the project not only advances innovation in EV testing technology, but also provides students with hands-on experience in system-level validation, helping bridge the gap between academic learning and industrial application while cultivating the next generation of engineering talent.

The presentation underscored Chroma ATE's technical expertise in EV testing and validation, as well as the company's commitment to advancing smart mobility and sustainable energy development through continued industry-academia partnerships.

The research paper, Development and Validation of Torque Vectoring and Traction Control Strategies in a FSAE Vehicle Using a Dual-Axle Dynamometer HIL Platform, has been published in the official SAE database. For more information, please refer to:
https://saemobilus.sae.org/papers/development-validation-torque-vectoring-traction-control-strategies-a-fsae-vehicle-using-a-dual-axle-dynamometer-hil-platform-2026-01-0644

▲Chroma ATE and NTU Racing jointly present their EV control testing technology paper at SAE WCX 2026,
showcasing the outcomes of their industry-academia collaboration.

▲Chroma ATE's dual-axle dynamometer platform.