scholarly journals Fault-Tolerant Control of the Road Wheel Subsystem in a Steer-By-Wire System

2008 ◽  
Vol 2008 ◽  
pp. 1-8 ◽  
Author(s):  
Bing Zheng ◽  
Sohel Anwar
Keyword(s):  
Control System ◽  
System Performance ◽  
Control Algorithm ◽  
Fault Tolerant ◽  
Single Point ◽  
Fault Tolerant Control ◽  
The Road ◽  
Steer By Wire ◽  
Wire System ◽  
Mechanical Arrangement

This paper describes a fault-tolerant steer-by-wire road wheel control system. With dual motor and dual microcontroller architecture, this system has the capability to tolerate single-point failures without degrading the control system performance. The arbitration bus, mechanical arrangement of motors, and the developed control algorithm allow the system to reconfigure itself automatically in the event of a single-point fault, and assure a smooth reconfiguration process. Both simulation and experimental results illustrate the effectiveness of the proposed fault-tolerant control system.

The Fault Tolerant Output Selector Based on Fault-Detection Considering Realistic Fault Modes for Pedal Simulator of Brake-by-Wire System

2013 ◽  
Vol 284-287 ◽  
pp. 1946-1950
Author(s):  
Jian Hu Li ◽  
Man Bok Park ◽  
Hun Mo Kim
Keyword(s):  
Fault Detection ◽  
System Performance ◽  
Fault Tolerant ◽  
Fault Tolerant Control ◽  
Detection Algorithm ◽  
Brake Pedal ◽  
Permanent Faults ◽  
Brake Light ◽  
Analogue Signals ◽  
Wire System

A brake pedal simulator in a Brake-by-Wire system is studied for fault tolerant control of the brake pedal signals. This study is conducted for the pedal simulator installed with a sensor that generates two analogue signals. Several realistic fault modes recognized by automotive experts have been analyzed. To solve the fault modes, we propose a fault tolerant output selector that can handle transient, intermittent, or permanent faults. The fault tolerant output selector, based on a fault detection algorithm, uses the BLS(brake light switch) signal and the Acc(acceleration pedal) signal to find faults and isolate them. To confirm the system performance, the fault modes were simulated. The result showed the reliability and safety of the pedal simulator for dealing with unexpected faults.

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