Inverse decoupling adaptive sliding mode control method

The invention belongs to the technical field of robust control of a multi-level DC-DC (Multilevel DC-DC, MD) Buck converter with a CPL (Constant Power Load), and particularly relates to an inverse decoupling adaptive sliding mode control method, which comprises the following steps of: S1, establishing a nonlinear mathematical model of the Buck converter with the CPL MD, verifying the reversibility of a system by adopting an inverse system method, and deducing an inverse system expression; s2, linearly decoupling the system into a plurality of pseudo-linear subsystems; s3, a self-adaptive mechanism is introduced to update sliding mode switching gain in real time, and self-adaptive sliding mode controllers are designed for the subsystems respectively; s4, verifying the stability and robustness of the closed-loop system based on the Lyapunov theory; s5, compared with an existing control method for simulation, it is verified that the inverse decoupling self-adaptive sliding mode control method has higher robustne