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Vol. 16, Special Issue, November 2012, pp. 233-242

 

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Adaptive Fuzzy Control of Aircraft ABS Based on Runway Identification
 
1 Hua-Wei Wu, 1 Te-fang Chen, 2 Wei-Ming Huang

1 School of Information Science and Engineering, Central South University, Changsha, China, 410083

2 State Key Laboratory of Powder Metallurgy, Central South University, Changsha, China, 410083

Tel.: 86-0731-88122745

E-mail: whw_xy@163.com

 

 

Received: 11 September 2012   /Accepted: 11 October 2012   /Published: 20 November 2012

Digital Sensors and Sensor Sysstems

 

Abstract: Modern civil aircraft requires all-weather frequent landing on permissive runway surface conditions as well as better braking performance. In order to meet such requirements, this paper starts with the kinematics of aircraft Anti-skid Braking System (ABS) ,and analyses the mathematical models of wheels, tyres and runway, hydraulic servo valves, brakes, etc. The runway identification is established based on Magic Formula, the desired slip ratio is real-time adjusted according to the runway surface condition. On this basis, the fuzzy control with input variables of the slip ratio error and its change ratio is introduced. Simulation and dynamometer tests show that this system has the satisfying braking effect in different runway status. The adaptability and robustness are greatly enhanced and improved, which ensure the successful development of aircraft ABS in integrated environment.

 

Keywords: Fuzzy control, Runway identification, Slip-ratio, Simulation, Dynamometer test

 

 

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