A Nonlinear Observer Based Analytical Redundancy for Predictive Fault Tolerant Control of a Steer-by-Wire System

2013 ◽  
Vol 16 (2) ◽  
pp. 321-334 ◽  
Author(s):  
Sohel Anwar ◽  
Wei Niu
Keyword(s):  
Fault Tolerant ◽  
Fault Tolerant Control ◽  
Nonlinear Observer ◽  
Steer By Wire ◽  
Analytical Redundancy ◽  
Wire System

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.

Fault tolerant control method for steer-by-wire system

2009 ◽  
Author(s):  
Chengwei Tian ◽  
Changfu Zong ◽  
Lei He ◽  
Xiang Wang ◽  
Yiliang Dong
Keyword(s):  
Control Method ◽  
Fault Tolerant ◽  
Fault Tolerant Control ◽  
Steer By Wire ◽  
Wire System

scholarly journals Experimental Study of Sensor Fault-Tolerant Control for an Electro-Hydraulic Actuator Based on a Robust Nonlinear Observer

Energies ◽  
2019 ◽  
Vol 12 (22) ◽  
pp. 4337 ◽  
Author(s):  
Tan Van Nguyen ◽  
Cheolkeun Ha
Keyword(s):  
Fault Tolerant ◽  
Fault Tolerant Control ◽  
Nonlinear Observer ◽  
Linear Matrix ◽  
Sensor Faults ◽  
Hydraulic Actuator ◽  
Discrete Time System ◽  
Lmi Optimization ◽  
Fault Compensation ◽  
The Difference

Electro-hydraulic actuators (EHAs) have been widely used in modern industries. However, sensor faults and actuator faults in EHA systems can arise due to aging during operation, making the system unstable and unsafe. To solve these issues, fault-tolerant control (FTC) techniques for EHA systems have been studied intensively. In this paper, an FTC is proposed and developed for the mini motion package (MMP) EHA system. First, a mathematical model of the MMP system is formulated and improved to provide position tracking control using a well-known proportional-integral-derivative (PID) controller. Second, an unknown input observer (UIO) reconstruction is performed to estimate the states, disturbances, and sensor faults so that an asymptotically stable control error can be obtained by a linear matrix inequality (LMI) optimization algorithm through Lyapunov’s stability condition. Third, the FTC designed for the nonlinear discrete-time system is formed from fault compensation based on a residual logic signal to implement the fault compensation process and ensure stability and tracking performance with respect to minimizing impacts of disturbances and sensor faults. Here, residual is defined by the difference between state response and state estimation. Finally, numerical simulations and experiments of the MMP system are presented to illustrate the efficiency of the proposed FTC technique.

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