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Vol. 173, Issue 6, June 2014, pp. 21-27

 

Bullet

 

One Hypersonic Aircraft Nonlinear Observer and Fault-tolerant Controller Design
 

1 Jie CHEN, 1 Jinyong YU, 1 Chao WANG, 2 Shigai LI

1 Department of Control Engineering, Naval Aeronautical and Astronautical University, 264001, Shandong Yantai, China
2 Department of Training, Naval Aeronautical and Astronautical University, 264001, Shandong Yantai, China
1 Tel.: 13105241156

1 E-mail: hjhychenjie@163.com

 

Received: 18 April 2014 /Accepted: 31 May 2014 /Published: 30 June 2014

Digital Sensors and Sensor Sysstems

 

Abstract: A new nonlinear fault-tolerant controller is designed to solve the part of actuator failure problem, the hypersonic aircraft nonlinear observer and controller are designed synthetically. We develop the research model based on a SISO output feedback nonlinear unobservered minimum phase system under the condition of single channel actuator failure of the hypersonic aircraft, adopt K- filter to reconstruct state vectors, design the adaptive control law to guarantee the system boundedness. Dynamic surface control is employed strategy to eliminate the explosion of terms by introducing a series of first order filters to obtain the differentiation of the virtual control inputs. Lyapunov stability theorem guarantees the error uniformly bound. The pitch channel of hypersonic aircraft is studied as an example to validate above theory. Both theory analysis and simulation verification show the simpleness and effective of this method.

 

Keywords: Hypersonic aircraft, Observer, Dynamic surface adaptive backstepping, Fault-tolerant control.

 

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