Nonlinear Robust Control of a Hypersonic Flight Vehicle Using Fuzzy Disturbance Observer

Table 1

Distractions of parameters in the plant system model.

Parameter	Distraction	Parameter	Distraction
Δ𝐶𝐴	20% 𝐶𝐴	Δ𝐶𝑁	15% 𝐶𝑁
Δ𝐶𝑍	20% 𝐶𝑍	Δ𝐶𝑙	40% 𝐶𝑙+0.001
Δ𝐶𝑛	40% 𝐶𝑛+0.002	Δ𝐶𝑚	30% 𝐶𝑚+0.001
Δ𝐶𝑙𝑝	50% 𝐶𝑙𝑝	Δ𝐶𝑛𝑟	50% 𝐶𝑛𝑟
Δ𝐶𝑚𝑞	50% 𝐶𝑚𝑞	Δ𝑚	20% 𝑚
Δ𝐽𝑋	8% 𝐽𝑋	Δ𝐽𝑌	8% 𝐽𝑌
Δ𝐽𝑍	8% 𝐽𝑍	Δ𝐽𝑋𝑌	15% 𝐽𝑋𝑌
Δ𝐽𝑋𝑍	0.4	Δ𝐽𝑌𝑍	0.4