Self-adaptive decoupling control method of fuel cell air supply system

The invention discloses a self-adaptive decoupling control method of a fuel cell air supply system, which is used for realizing decoupling control of flow pressure of the fuel cell air supply system in different environments, and comprises the steps of expected signal preprocessing, PID feedback controller processing, decoupling controller processing, sensor signal processing and the like. The expected signal preprocessing is used for converting expected mass flow and pressure signals into volume flow and pressure ratio signals, and the PID feedback controller obtains values of control quantities of a flow control loop and a pressure control loop through volume flow errors and pressure ratio errors; the fuel cell cathode pressure is relatively independently adjusted through the decoupling controller, and the sensor signal processor is used for converting mass flow and pressure signals fed back by a fuel cell system into volume flow and pressure ratio signals. Compared with the prior art, the method has the ad