Table of Contents
Advances in Aerospace Engineering
Volume 2015, Article ID 264564, 10 pages
Research Article

Scalar Method of Fault Diagnosis of Inertial Measurement Unit

Faculty of Instrument Design and Engineering, National Technical University of Ukraine “Kiev Polytechnic Institute”, Peremogy Avenue 37, Kiev 03056, Ukraine

Received 14 March 2015; Accepted 2 June 2015

Academic Editor: Kemao Peng

Copyright © 2015 Vadym Avrutov. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


The scalar method of fault diagnosis systems of the inertial measurement unit (IMU) is described. All inertial navigation systems consist of such IMU. The scalar calibration method is a base of the scalar method for quality monitoring and diagnostics. In accordance with scalar calibration method algorithms of fault diagnosis systems are developed. As a result of quality monitoring algorithm verification is implemented in the working capacity monitoring of IMU. A failure element determination is based on diagnostics algorithm verification and after that the reason for such failure is cleared. The process of verifications consists of comparison of the calculated estimations of biases, scale factor errors, and misalignments angles of sensors to their data sheet certificate, kept in internal memory of computer. As a result of such comparison the conclusion for working capacity of each IMU sensor can be made and also the failure sensor can be determined.