Self-adaptive decoupling control method of fuel cell air supply system
A technology of air supply and decoupling control, applied in the direction of adaptive control, fuel cells, electrical components, etc., can solve the problems of limiting the dynamic performance of the system, weak disturbance suppression, etc., and achieve reduced stability margin requirements and excellent environmental adaptation Sexuality, the effect of reducing workload
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[0044] In order to enable those skilled in the art to better understand the solution of the present invention, the invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.
[0045] Such as figure 1 A fuel cell air supply system adaptive decoupling control method shown, the method includes the following steps,
[0046] 1) The nonlinear characteristics of the air supply system are obtained through system identification:
[0047]
[0048] Among them, d is the differential operator, Q ca is the air volume flow rate, r ca is the ratio of cathode to ambient pressure, N AC is the speed of the air compressor, α bpv is the opening of the back pressure valve. The system is characterized from the opening of the back pressure valve, the speed of the air compressor to the volumetric flow rate and pressure ratio. It has strong robustness and adaptability to working conditions, and greatly reduces the workload of system identi...
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