A model - based jamming detection method for electro-hydrostatic actuators

Date

2020-09-01

Author

Poyraz, Emre Murat
Turgut, Ali Emre
Çalışkan, Hakan

Metadata

Show full item record

Item Usage Stats

262
views

0
downloads

An anomaly or a fault, which may be treated as insignificant in a complicated engineering system, like an electro–hydraulic flight control actuator, can cause considerable performance degradation and deteriorating effects or even worse it may end up with a catastrophic system failure. One of the problems commonly observed in air vehicles is called jamming. Jamming is the type of failure where an actuator connected to a flight control surface permanently gets stuck at a certain position and does not move anymore. This might cause a loss of control of the air vehicle causing severe consequences. Although, there are several methods to detect jamming in the literature, still there is not a universally accepted solution. In this paper, a novel threshold-based fault detection and diagnosis method is proposed. The method is based on the variance of time rate of change of disturbance load and the average tracking error. When these two quantities are above a certain corresponding threshold, jamming is detected. The method is tested on an experimental setup. The experiments show that the detection performance of the method is satisfactory and the detection is performed under one second for all the test cases

Subject Keywords

Fault detection and diagnosis, Disturbance observer, EHA, Jamming, Flight control actuation

URI

https://www.hjse.hitit.edu.tr/hjse/index.php/HJSE/article/view/474
https://hdl.handle.net/11511/88219

Journal

Hittite Journal of Science Engineering

DOI

https://doi.org/10.17350/HJSE19030000188

Collections

Department of Mechanical Engineering, Article

Suggestions

OpenMETU
Core

A Model Based Approach for Sensor Fault Detection in Civil Aircraft Control Surface Sercekman, O.; Kutay, Ali Türker (2018-04-26) A model-based fault detection and diagnosis (FDD) solution improves the capability in a civil aircraft control surface whereas having low complexity and computational requirements. The main objective of the FDD. techniques that are extensively applied in industrial systems is to increase the sensitivity of fault detection scheme while maintaining a reliable system response with respect to additional unknown inputs. In the paper, a reformative approach to an observer-based fault detection method is introduce...
A Model based approach for aircraft sensor fault detection Serçekman, Ömür; Kutay, Ali Türker; Department of Aerospace Engineering (2018) This thesis presents a reformative approach to a model-based fault detection and diagnosis (FDD) method that improves the capability of aircraft flight control systems and acquires low complexity and computational requirements. The main objective of the FDD techniques that are extensively applied in industrial systems is to increase the sensitivity of fault detection scheme with respect to additional noise, uncertainty or disturbances. The designed fault detection model is integrated to a civil aircraft mod...
A comparison of two novel direct adaptive control methods under actuator failure accommodation Kutay, Ali Türker; Calise, Anthony J.; Johnson, Eric N. (null; 2008-12-01) In flight control systems it is crucial to accommodate actuator failures for safe operation. Modern flight control systems are equipped with multiple power sources and actuation systems that offer redundancy in the event of actuator failures. Traditional approaches to flight control system design involve scheduling of fixed gain controllers and control allocation to take full advantage of redundant actuators. Alternative adaptive control approaches have been extensively investigated recently to provide enha...
An enhanced analytical model for residual stress prediction in machining Lazoglu, I.; Ulutan, D.; Alaca, B. E.; Engin, S.; Kaftanoglu, B. (2008-01-01) The predictions of residual stresses are most critical on the machined aerospace components for the safety of the aircraft. In this paper, an enhanced analytic elasto-plastic model is presented using the superposition of thermal and mechanical stresses on the workpiece, followed by a relaxation procedure. Theoretical residual stress predictions are verified experimentally with X-ray diffraction measurements on the high strength engineering material of Waspaloy that is used critical parts such as in aircraft...
A simulink model for the induction machine with an inter-turn short circuit fault Şahin, İlker; Bayazıt, Göksenin Hande; Keysan, Ozan (2020-08-23) In this study, an analytical model for the induction machine (IM) with an inter-turn short circuit (ITSC) fault is developed based on the voltage-behind-reactance (VBR) approach. The main motivation is to provide a simulation tool that can be used for fault detection and condition monitoring research. The proposed simulation model is implemented in Simulink, and compared with the outcomes of both finite element analysis (FEA) and experimental studies. The results show the effectiveness of the proposed model...

Citation Formats

E. M. Poyraz, A. E. Turgut, and H. Çalışkan, “A model - based jamming detection method for electro-hydrostatic actuators,” Hittite Journal of Science Engineering, pp. 189–198, 2020, Accessed: 00, 2021. [Online]. Available: https://www.hjse.hitit.edu.tr/hjse/index.php/HJSE/article/view/474.