Effect of steering reaction torque of ultra-compact electric vehicle on steering burden for active steering wheel system

Issue title: 20th International Symposium on Applied Electromagnetics and Mechanics

Guest editors: Theodoros Theodoulidis, Christos Antonopoulos, Nikolaos Kantartzis, Ioannis Rekanos and Theodoros Zygiridis

Article type: Research Article

Authors: Uchino, Daigo^a | Hira, Takamasa^b | Ogawa, Kazuki^a | Ikeda, Keigo^c | Kato, Taro^d | Endo, Ayato^e | Kato, Hideaki^f | Narita, Takayoshi^f;

Affiliations: [a] Course of Science and Technology, Tokai University, Hiratsuka-shi, Kanagawa, Japan | [b] Course of Mechanical Engineering, Tokai University, Hiratsuka-shi, Kanagawa, Japan | [c] Course of Mechanical Engineering, Hokkaido University of Science, Sapporo-shi, Hokkaido, Japan | [d] Course of Mechanical Engineering, Tokyo University of Technology, Hachioji-shi, Tokyo, Japan | [e] Department of Electrical Engineering, Fukuoka Institute of Technology, Fukuoka, Japan | [f] Department of Prime Mover Engineering, Tokai University, Hiratsuka-shi, Kanagawa, Japan

Correspondence: [*] Corresponding author: Takayoshi Narita, Department of Prime Mover Engineering, Tokai University, 4-1-1 Kitakaname, Hiratsuka-shi, Kanagawa, Japan. E-mail: narita@tsc.u-tokai.ac.jp

Abstract: An ultra-compact electric mobility vehicle cannot be equipped with power steering, and the physical burden is large. Therefore, we are continuously researching steering support for an ultra-compact electric mobility vehicle equipped with a steer-by-wire system (SBWS). The SBWS has not been widely diffused because the steering and front wheels are connected only to electric signals and do not have a high redundancy level. However, the advantage of an SBWS is that the steering reaction torque felt through the steering wheel can be controlled freely. We investigated an active steering wheel system (ASWS) that can control an appropriate steering feeling for each driver by being equipped with SBWS and evaluating the steering burden of each driver. So far, research on the SBWS has been considered to improve operability by transmitting road information and feeding back vehicle motion, however few research on an SBWS considers the physical and mental burden on the driver. In this study, we conducted a fundamental analysis of the effect of the steering reaction torque on the steering burden, focusing on the operating direction of the steering wheel.

Keywords: Active steering wheel system, ultra-compact electric mobility vehicle, steering muscle burden, surface electromyogram, inverse kinematics

DOI: 10.3233/JAE-220179

Journal: International Journal of Applied Electromagnetics and Mechanics, vol. 71, no. S1, pp. S363-S371, 2023