Decoupled scalar approach for aircraft angular motion estimation using a gyro-free inertial measurement unit

Dehghan Manshadi, A ; Sharif University of Technology | 2019

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  1. Type of Document: Article
  2. DOI: 10.1115/1.4044356
  3. Publisher: American Society of Mechanical Engineers (ASME) , 2019
  4. Abstract:
  5. In-flight aircraft angular motion estimation based on an all-accelerometers inertial measurement unit (IMU) is investigated in this study. The relative acceleration equation as the representative of a rigid-body kinematics is manipulated to present the state and measurement equations of the aircraft dynamics. A decoupled scalar form (DSF) of the system equations, as a free-singularity problem, is derived. Mathematical modeling and simulation of an aircraft dynamics, equipped with an all-accelerometers IMU, are employed to prepare measurement data. Taking into account the modeling of accelerometer error, the measurement data have been simulated as a real condition. Three extended Kalman filters (EKFs) are used in parallel to estimate aircraft angular motion. Performance of the estimation algorithm is assessed by Monte Carlo analysis. As a result, the presented decoupled scalar approach using a gyro-free IMU (GF-IMU) provides an uncorrelated estimate of the in-flight aircraft motion components. © 2019 Oxford University Press. All rights reserved
  6. Keywords:
  7. Aircraft angular motion estimation ; Decoupled scalar form ; Accelerometers ; Aircraft ; Equations of state ; Estimation ; Extended Kalman filters ; Free flight ; Gyroscopes ; All-accelerometers IMU ; Estimation algorithm ; Extended Kalman filter (EKFs) ; Inertial measurement unit ; Mathematical modeling and simulation ; Measurement equations ; Relative acceleration ; Rigid body kinematics ; Motion estimation
  8. Source: Journal of Dynamic Systems, Measurement and Control, Transactions of the ASME ; Volume 141, Issue 12 , 2019 ; 00220434 (ISSN)
  9. URL: https://asmedigitalcollection.asme.org/dynamicsystems/article-abstract/141/12/121004/955214/Decoupled-Scalar-Approach-for-Aircraft-Angular?redirectedFrom=fulltext