Online Distributed Approach for Aerodynamic Model Identification of the ICE Aircraft

Indirect adaptive control for the Innovative Control Effectors (ICE) aircraft requires an online aerodynamic model identification strategy to re-estimate the aerodynamic coefficients. Simplotope B-splines in combination with distributed optimization enables for local updates in a global aerodynamic model. This combination reduces the estimation...

Envelope Estimation and Protection of Innovative Control Effectors (ICE) Aircraft: A Probabilistic Approach

Loss of control is considered as the primary cause of fatal accidents in aviation, which occurs when the aircraft has left the safe flight envelope. To reduce loss-of-control-related accidents, it is important to estimate the safe flight envelope at the current flight condition and integrate it into flight control system design. This task is...

Distributed Approach for Aerodynamic Model Identification of the ICE Aircraft

High performance control allocation methods for the Innovative Control Effectors (ICE) aircraft require accurate onboard aerodynamic models, with preferably first order continuity. Simplotope B-Splines, an extension on Simplex B-Splines, have a high approximation power by using local basis functions. However, enforcing global continuity produces...

Finding trim points of the ICE model using interval analysis

In this work interval analysis is applied to the thirteen control effector Innovative Control Effectors model to find its trim set. The method to find trim states is based on interval box consistency. At low speed the method is capable of finding interval enclosures of single trim points with a high accuracy if the minimum number of required...

Minimum drag control allocation for the Innovative Control Effector aircraft: Optimal use of control redundancy on modern fighters

The Innovative Control Effector model is a tailless delta-wing aircraft concept equipped with 11 control surfaces with overlapping functionality and two-directional thrust vectoring. The high level of redundancy makes it an interesting object for research on mission-specific control allocation. A (spline-based) incremental control allocation...

Nonlinear Control Allocation for a High-Performance Tailless Aircraft with Innovative Control Effectors: An Incremental Robust Approach

Conventional linear control allocation (LCA) methods fail to provide satisfactory performance in flight control systems (FCS) for aircraft with highly nonlinear and coupled control effector suites, especially for tailless aircraft with strong interactions between control effectors. This thesis implements an incremental nonlinear control...

Physical Splines for Aerodynamic Modelling of Innovative Control Effectors

Multivariate simplex B-splines as a modelling technique provide more accurate models than standard polynomial models, which makes them an excellent modelling tool. Their coefficients, which are expressed in a barycentric coordinate system, are abstract. In this paper a physical transformation matrix is derived which can be applied to transform B...