Objective
Estimate vehicle mass/load online and identify secondary parameters (e.g., wind and rolling-resistance coefficients) using multi-sensor data including GPS.
Keywords: parameter identification, rolling resistance, wind resistance, accelerometers, gyros, system modeling, MATLAB, signal processing
Summary
Real-world driving involves forces from rolling resistance, aerodynamic drag, road grade, and vehicle payload (passengers, boot load, trailers). These factors vary across time scales: payload is often constant during a trip, while wind/rolling effects fluctuate rapidly. Some signals (e.g., local grade) are noisy short-term yet reveal meaningful trends over longer horizons via altitude change.
This thesis targets robust online estimation of vehicle mass/load using a fusion of torque, longitudinal/lateral dynamics, gyros/accelerometers, wheel speeds, barometer, and GPS (position, speed, altitude). Secondary goals include identifying wind and rolling-resistance coefficients and analyzing how changes in mass influence tire behavior.
Your profile
We are looking for an engineering student who is studying a master's program with a specialization in Y, D, M, E, F, Z, or equivalent. Knowledge within any of the following areas is beneficial:
We expect you to have a solid academic record, be driven, take initiative, and work independently. You will be carrying out the thesis at our head office in Linköping.
We are looking forward to your application! Do not forget to include a personal letter, CV, and course listing with grades. We will be considering applications on a rolling basis. The earliest expected start date is January 2026.
About NIRA
At NIRA Dynamics, we believe in making roads safer by delivering intelligent software solutions directly into passenger cars. Within our Wheel Safety Insights (WSI) department, we develop advanced in-vehicle algorithms that enhance safety, reliability, and performance — helping cars better understand their wheels, tires, and the road beneath them. Just like our vision of next level of mobility includes all people and all modes of travel, our workplace thrives on diversity and inclusion. The broader the mix of experiences and perspectives we have, the stronger we are in shaping a safer and more sustainable transportation system for everyone.
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