Real-time estimation of vehicle state and tire-road friction forces

2001 ◽  
Author(s):  
B. Samadi ◽  
R. Kazemi ◽  
K.Y. Nikravesh ◽  
M. Kabganian
Keyword(s):  
Real Time ◽  
Time Estimation ◽  
Friction Forces ◽  
Road Friction ◽  
Real Time Estimation

A Study of Control Methods for the Braking System on Passenger Multiple Units

2004 ◽  
Author(s):  
Masanobu Nankyo
Keyword(s):  
Real Time ◽  
Control Method ◽  
Estimation Method ◽  
Time Estimation ◽  
Brake System ◽  
Friction Forces ◽  
Brake Shoe ◽  
Non Linear ◽  
Linear Elements ◽  
Real Time Estimation

As well known, the mechanical (friction, pneumatic) brake system on trains contains some non-linear elements. So it has been difficult to control the speed or acceleration of trains according to desired patterns. This paper reviews our research on the control method of the physical performance of train running such as acceleration (deceleration) by mechanical braking devices. One of our approaches is the introduction of the feedback control into the brake control system. Mathematical models of non-linear elements in the brake system and some effective methods of controller design are proposed with both simulation and experimental results. Another approach is the real time estimation of the friction forces between a brake shoe and a wheel tread. Friction has severe non-linearity; however it can not be measured easily on running trains. We propose the introduction of the onboard real-time estimation method of friction coefficients using the speed information which can be obtained easily in the existing brake system.

Algorithms for Real-Time Estimation of Individual Wheel Tire-Road Friction Coefficients

2012 ◽  
Vol 17 (6) ◽  
pp. 1183-1195 ◽  
Author(s):  
Rajesh Rajamani ◽  
Gridsada Phanomchoeng ◽  
Damrongrit Piyabongkarn ◽  
Jae Y. Lew
Keyword(s):  
Real Time ◽  
Time Estimation ◽  
Friction Coefficients ◽  
Road Friction ◽  
Real Time Estimation

Study on Real Time Estimation of Tire to Road Friction

1997 ◽  
Vol 27 (sup001) ◽  
pp. 225-233 ◽  
Author(s):  
S. YAMAZAKI ◽  
O. FURUKAWA ◽  
T. SUZUKI
Keyword(s):  
Real Time ◽  
Time Estimation ◽  
Road Friction ◽  
Real Time Estimation
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