International Journal of Aerospace Engineering / 2018 / Article / Fig 3

Research Article

Fuzzy State Machine Energy Management Strategy for Hybrid Electric UAVs with PV/Fuel Cell/Battery Power System

Figure 3

Membership functions and rule base surface.
(a) Surplus demand power membership functions
(b) Battery SOC membership functions
(c) Fuel cell power membership functions
(d) Fuel cell-desired power rule base surface