scholarly journals Networked Fault-Tolerant Control Allocation for Multiple Actuator Failures

2015 ◽  
Vol 2015 ◽  
pp. 1-14 ◽  
Author(s):  
Inseok Yang ◽  
Dongik Lee
Keyword(s):  
Numerical Simulations ◽  
General Model ◽  
Fault Tolerant ◽  
Fault Tolerant Control ◽  
Control Technique ◽  
Management Technique ◽  
Control Allocation ◽  
Actuator Failure ◽  
Diagnostic Data ◽  
Actuator Failures

This paper proposes intelligent fault-tolerant control technique using network. Not only control commands generated by a controller but also diagnostic data for tolerating failures can be transmitted through network. In this paper, fault-tolerant control allocation method (FTCA) is proposed to tolerate failures in more than one actuator. FTCA is based on a well-known actuator management technique called control allocation (CA). While the conventional CA is used to redistribute actuators optimally, FTCA redistributes actuators to compensate for the performance degradation due to actuator failure. To analyze the effects of faulty actuator, this paper proposes the general model of the faulty system firstly. And then the modified CA for tolerating the effect of failure is proposed. The performance of the proposed FTCA method is verified by the numerical simulations with application to F-18 High Alpha Research Vehicle (HARV).

scholarly journals Fault tolerant control of uav with wing layout based on control allocation

2021 ◽  
Vol 233 ◽  
pp. 04008
Author(s):  
Chen Jie ◽  
LIN Jianxin
Keyword(s):  
Unmanned Aerial Vehicle ◽  
Flight Control ◽  
Fault Tolerant ◽  
Fault Tolerant Control ◽  
Control Allocation ◽  
Longitudinal Motion ◽  
Actuator Failure ◽  
Simulink Simulation ◽  
Control Command ◽  
Aerial Vehicle

As the flying wing layout unmanned aerial vehicle (uav) extensive research and task environment increasingly complex, Yu Feiyi layout unmanned aerial vehicle (uav) for fault tolerant control gradually become the main technical means of the flight control, using the established mathematical model of the flying wing uav longitudinal layout setting the actuator failure effect, is in the nature of adaptive control allocation fault-tolerant algorithm is given, and MATLAB/simulink simulation is carried out for uav longitudinal motion, realize the rapid and stable, the control command and response to complete the nonlinear fault-tolerant control of flying wing uavs.

Reconfigurable dynamic control allocation for aircraft with actuator failures

2017 ◽  
Vol 121 (1237) ◽  
pp. 341-371 ◽  
Author(s):  
S. H. Almutairi ◽  
N. Aouf
Keyword(s):  
Fault Tolerant ◽  
Dynamic Control ◽  
Fault Tolerant Control ◽  
Control Allocation ◽  
Control Effort ◽  
Actuator Failures ◽  
Wide Range ◽  
Control Command ◽  
On Line ◽  
Lock In

ABSTRACTIn this paper, the development of a fault-tolerant control system for an aircraft that exploits both the hardware and analytical redundancy in the system is considered. A control allocation approach is developed where the total control command is computed and distributed among the available control surfaces. The actuator’s position and rate limits are taken into account in the optimisation problem. Existing fault-tolerant control allocation techniques produce look-up tables of control gains based on certain faults in the model. In contrast, the developed reconfigurable approach presented here incorporates a new process that redistributes control efforts which is updated whenever a fault occurs. In order to correlate between control effort redistribution and the fault magnitude, a fuzzy logic scheme is implemented, which handles a wide range of fault magnitudes on-line. The approach is applied for the most severe type of fault, which is the “lock-in-place” (jam) fault. Results show that the developed approach successfully handles the faulty situations and enhances aircraft flying responses by utilising the available healthy controls.

Fault-tolerant control approach based on constraint control allocation for 4WIS/4WID vehicles

2021 ◽  
pp. 095440702098283
Author(s):  
Yang Liu ◽  
Changfu Zong ◽  
Dong Zhang ◽  
Hongyu Zheng ◽  
Xiaojian Han ◽  
...  
Keyword(s):  
Control Method ◽  
Fault Tolerant ◽  
Linear Quadratic Regulator ◽  
Fault Tolerant Control ◽  
Control Allocation ◽  
Linear Quadratic ◽  
Control Approach ◽  
Actuator Failures ◽  
Performance Reduction ◽  
Actuator Control

The four-wheel independently driven and steered electric vehicle is a promising vehicle model having a strong potential for handling stability, flexibility, and consumption reduction. However, failure of the actuators of 4WIS/4WID vehicles could lead to performance reduction and dangerous accidents owing to their complex system. A fault-tolerant control approach is adopted in the integrated chassis controller such that the autonomously driven vehicle maintains its safety and stability while actuator failures occur. A linear quadratic regulator is utilized to track the reference path by adjusting the total forces and moment. To resolve any actuator failures, a control allocation method based on the pseudo-inverse matrix is introduced for decoupling the forces and moment based on the current state of the tires with cycle and correction. In the actuator control layer, the desired forces of the tires are achieved by regulating the steering angles and driving torques based on the inverse tire models of normal and flat tires. Three sets of experiments are used to test the efficiency of the proposed method when applied to a 4WIS/4WID vehicle. The results demonstrate that the proposed fault-tolerant control method can greatly improve the tracking performance and stability of 4WIS/4WID vehicles under conditions of actuator failures.

scholarly journals Sliding Mode Fault Tolerant Control for Unmanned Aerial Vehicle with Sensor and Actuator Faults

Sensors ◽  
2019 ◽  
Vol 19 (3) ◽  
pp. 643 ◽  
Author(s):  
Juan Tan ◽  
Yonghua Fan ◽  
Pengpeng Yan ◽  
Chun Wang ◽  
Hao Feng
Keyword(s):  
Unmanned Aerial Vehicle ◽  
Health Management ◽  
Fault Tolerant ◽  
Sliding Mode ◽  
Control Process ◽  
Fault Tolerant Control ◽  
Accelerometer Sensor ◽  
Actuator Failures ◽  
Aerial Vehicle ◽  
Gyroscope Sensor

The unmanned aerial vehicle (UAV) has been developing rapidly recently, and the safety and the reliability of the UAV are significant to the mission execution and the life of UAV. Sensor and actuator failures of a UAV are one of the most common malfunctions, threating the safety and life of the UAV. Fault-tolerant control technology is an effective method to improve the reliability and safety of UAV, which also contributes to vehicle health management (VHM). This paper deals with the sliding mode fault-tolerant control of the UAV, considering the failures of sensor and actuator. Firstly, a terminal sliding surface is designed to ensure the state of the system on the sliding mode surface throughout the control process based on the simplified coupling dynamic model. Then, the sliding mode control (SMC) method combined with the RBF neural network algorithm is used to design the parameters of the sliding mode controller, and with this, the efficiency of the design process is improved and system chattering is minimized. Finally, the Simulink simulations are carried out using a fault tolerance controller under the conditions where accelerometer sensor, gyroscope sensor or actuator failures is assumed. The results show that the proposed control strategy is quite an effective method for the control of UAVs with accelerometer sensor, gyroscope sensor or actuator failures.

A Novel Fault-Tolerant Control Technique for an Inverter With Hysteresis Current

2019 ◽  
Vol 21 (3) ◽  
pp. 92-102
Author(s):  
Kaidi Li ◽  
Chunyang Chen ◽  
Shu Cheng ◽  
Tianjian Yu ◽  
Chaoqun Xiang ◽  
...  
Keyword(s):  
Fault Tolerant ◽  
Fault Tolerant Control ◽  
Control Technique
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