Presented by: Timmothy Chen, Victor Chiang & Ray Xu

Advisor: Dr. Robert Morley & Dr. Jason Trobaugh

Current industry AWD standards involves the selective suppression of wheels on one side of the vehicle which transfers the torque provided by the engine to the other side, ensuring better traction and tighter turn radius. With Tesla recently releasing its novel 3-motor limited slip differential (LSD) system with the Roadster model in February 2018, advancements in AWD technology has become one of the primary areas of interest in the automobile industry. However, it is expected that Tesla, and other industry giants, are looking to improve AWD systems through developing a 4-motor system. Top vehicle manufacturers have begun to prototype their own 4-motor high-performance electric vehicles, such as the Mercedes-Benz SLS Electric Drive in 2014 and the Toroidion 1MW car.  Our project seeks to prototype and test a 4-motor system, by building an Arduino-controlled RC car with four motors to provide precise power control on each individual wheel. Through the use of sensors and Arduino software, we will apply active torque vectoring to ensure for better traction and cornering. We believe that controlling the precise power delivered to each wheel will result in improved low-speed maneuverability without compromising the high-speed stability of the vehicle.

 

Torque Vectoring vs. Non-Torque Vectoring Vehicle Turn Radii Comparison