摘要

A novel attitude control scheme for a station-keeping airship using feedback linearization and fuzzy sliding mode control is proposed. First, the ZY-1 airship is introduced, and the nonlinear attitude control system of the airship is derived. Second, the nonlinear attitude control system is decoupled into three single-input single-output linear subsystems through the differential geometry theory. The attitude control law is then designed for each subsystem using sliding mode control. To improve control performance, a fuzzy sliding mode control approach is proposed in which the control gains are tuned according to fuzzy rules, with switching sliding surface function and its derivative as fuzzy control inputs and control gain as fuzzy control output. The stability of the closed-loop control system is proven using the Lyapunov theorem. Finally, simulation results illustrate the effectiveness of the proposed control scheme.