Linear set-membership state estimation with unknown but bounded disturbances.
Foo, Y. K.
Soh, Y. C.
Date of Issue2012
School of Electrical and Electronic Engineering
In this article, we consider the problem of discrete-time linear state estimation when at every discrete instant Δ the Euclidean norm of the discrete-time disturbance ‖w(Δ)‖2 is bounded within some known value. Specifically, given a hypersphere that contains the uncertain disturbance signal w(Δ) and an ellipsoid containing the uncertain system state x(Δ) at time step Δ, a sub-optimal approach to computing a linear minimax filter which constructs a minimal ellipsoid to contain x(Δ + 1) is derived. A distinct feature of our approach when compared to earlier solutions is that both the filter and the performance bound can be pre-computed off-line.
DRNTU::Engineering::Electrical and electronic engineering
International journal of systems science