Robust Adaptive Control for Fractional-Order Systems with Disturbance and Saturation
8 Stabilization Control of Continuous-Time Fractional Positive Systems Based on Disturbance Observer
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Rn denotes the n-dimensional real space.
N┬ denotes the transpose of a matrix N.
A matrix N0 ∈ Rn×n is called a Metzler matrix if its off-diagonal elements are non-negative.
A matrix N1 ∈ Rn×n can be seen as a non-negative matrix if all its elements are non-negative, e.g., N1 ≥ 0.
A vector Φ can be seen as a non-negative vector if all its elements are non-negative, e.g., Φ ≥ 0. It is said to be positive if all its components are positive (Φ > 0). Furthermore, it is said to be negative if all its components are negative (Φ < 0).