3103 Proposal on Steering System Based on Relationship between Gear Ratio and Reaction Torque Control at Low Speed Region

2006 ◽  
Vol 2006.15 (0) ◽  
pp. 317-320 ◽  
Author(s):  
Tetsuya Kakinuma ◽  
Motoki Shino ◽  
Minoru Kamata
Keyword(s):  
Steering System ◽  
Gear Ratio ◽  
Torque Control ◽  
Low Speed ◽  
Reaction Torque

Control Design for Cancellation of Unnatural Reaction Torque and Vibrations in Variable-Gear-Ratio Steering System

2013 ◽  
Author(s):  
Atsushi Oshima ◽  
Xu Chen ◽  
Sumio Sugita ◽  
Masayoshi Tomizuka
Keyword(s):  
Control Method ◽  
Low Frequency ◽  
Control Design ◽  
Steering System ◽  
Gear Ratio ◽  
Experimental Setup ◽  
Hardware In The Loop ◽  
Model Uncertainties ◽  
Reaction Torque

Variable-gear-ratio steering is an advanced feature in automotive vehicles. As the name suggest, it changes the steering gear ratio depending on the speed of the vehicle. This feature can simplify steering for the driver, which leads to various advantages, such as improved vehicle comfort, stability, and safety. One serious problem, however, is that the variable-gear-ratio system generates unnatural torque to the driver whenever the variable-gear-ratio control is activated. Such unnatural torque includes both low-frequency and steering-speed-dependent components. This paper proposes a control method to cancel this unnatural torque. We address the problem by using a tire sensor and a set of feedback and feedforward algorithms. Effectiveness of the proposed method is experimentally verified using a hardware-in-the-loop experimental setup. Stability and robustness under model uncertainties are evaluated.

scholarly journals Design of a new steering system to solve the problem of steering operation during low speed driving

2019 ◽  
Vol 6 (3) ◽  
pp. 18-00386-18-00386
Author(s):  
Kei KITAHARA ◽  
Keisuke KAZAMA ◽  
Hiroshi MOURI
Keyword(s):  
Steering System ◽  
Low Speed
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