The invention relates to the technical field of
refrigeration equipment control, in particular to an air conditioner control method and
system. Firstly, a
refrigerant flow prediction model is established by combining the advantages of LSTM and XGBoost, a
time sequence and static characteristics are accurately captured, prediction precision and
system adaptability are improved, reliable data support is provided for intelligent regulation and control,
refrigerant distribution is optimized, energy efficiency is improved, and
energy consumption is reduced; secondly, the opening degree of an
electronic expansion valve and the frequency of a compressor are controlled in a feedforward mode through a multivariable cooperative
control algorithm, the load and the flow are accurately matched, the
system efficiency is improved, it is ensured that all assemblies operate in a coordinated mode, energy waste is reduced, and stability and comfort are optimized; finally, PID
feedback control is combined, the frequencies of the
electronic expansion valve and the compressor are finely adjusted in real time, the optimal energy efficiency and stability of the system are ensured, closed-
loop control is achieved, the
temperature control precision is further improved, fluctuation is reduced, and the energy efficiency is optimized.