Control of Automotive Semi-Active MR Suspensions for In-Wheel Electric Vehicles

Mauricio Anaya-Martinez,L.C Félix-Herrán,Ruben Morales-Menendez,Ricardo-A Ramirez-Mendoza,Jorge-De-J Lozoya-Santos,Juan-C Tudon-Martinez

doi:10.3390/app10134522

Mauricio Anaya-Martinez, L.C Félix-Herrán + Show 4 more

Open Access

https://doi.org/10.3390/app10134522

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Abstract

In this work, four different semi-active controllers for a quarter of vehicle and full vehicles are evaluated and compared when used in internal combustion engine (ICE) vehicles vs electric vehicles (EVs) with in-wheel motor configuration as a way to explore the use of semi-active suspension systems in this kind of EVs. First, the quarter of vehicle vertical dynamics is analyzed and then a full vehicle approach explores the effectiveness of the control strategies and the effects of the traction in the vertical Control performances. Aspects like the relation between traction and suspension performances, and the resonance frequencies are also discussed.

Highlights

Today, automotive vehicles are considered the primary conveyance due to the high amount of people, which performs its daily activities making use of them
From the full vehicle results, it can be said that for the normal vehicle, the Frequency Estimation Based (FEB) controller is guaranteeing the best improvement for comfort and road holding
While for the modified vehicle, the best comfort improvement is given by the 1.25A baseline suspension

Summary

Introduction

Automotive vehicles are considered the primary conveyance due to the high amount of people, which performs its daily activities making use of them. These improvements have been devoted to enhancing automotive suspension systems, where the road holding as well as the comfort for vehicle’s passengers have been improved. A balance between road holding and comfort has been the main goal in this area, most of the devoted work has been focused on internal combustion engine vehicles. For this reason, with the high and growing adoption of the EVs, there is a need for solutions for guaranteeing the balance between road comfort and holding especially when working with an in-wheel powertrain configuration with semi-active suspension systems when a switched reluctance motor (SRM) is employed. The use of SRM instead of brushless DC (BLDC) motors in in-wheel configurations has increased due to the low cost, efficient power transfer, high torque density and direct drivetrain system features that the SR motors offer for this application [1]

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Conclusion