Open AccessFault Detection and Isolation of the Electro-Mechanical Actuator Based on BIT
Author(s) -
Tao Yang,
Xinlei Cao,
Yang Jin
Publication year - 2020
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/790/1/012163
Subject(s) - fault detection and isolation , redundancy (engineering) , actuator , isolation (microbiology) , battlefield , fault coverage , computer science , alarm , fault (geology) , false alarm , bit (key) , real time computing , reliability engineering , engineering , embedded system , artificial intelligence , computer security , electrical engineering , history , ancient history , electronic circuit , microbiology and biotechnology , seismology , biology , geology
Large UAV (Unmanned Aerial Vehicle) for scout and strike is a new trend in modern battlefield because of economy in use, high attendance and low casualty, whose safety is of top concern. EMA (Electromechanical Actuator), as the key component, impacts on UAV a lot. Its performance decides whether the flight is safe or not. In this paper, BIT (Built-In Test) function is designed according to characteristics of EMA with dual-redundancy used for scout and strike UAV. Based on the BIT analysis and BIT design principle, the BIT test methods are brought up. Thanks to the BIT design, the corresponding fault detection and fault isolation of EMA are available which are presented in details. The paper tells the faults that can be detected and then describe how to isolate them. In order to verify the validity of BIT design and the effectiveness of fault detection as well as fault isolation, the corresponding experimental platform is built and several experiments are conducted. The results show that the rates of fault detection, fault isolation and false alarm is desirable. The methods in this paper is feasible and effective.