The invention relates to the technical field of pH value adjustment, and discloses a pH value adjustment method and
system, a storage medium and equipment. The method comprises the following steps: denoising
time sequence data of a pH sensor to obtain a smooth pH value sequence, and calculating a first-order difference of the smooth pH value sequence to obtain a pH value
rate change sequence and rate characteristics; when any value in the sequence exceeds a preset threshold value, extracting feature distribution data, and inputting the feature distribution data and real-time state data of the solution into a
solution state evaluation model to obtain an estimated value of the buffer capacity and
reaction rate change of the solution; based on the estimated value, the pH value
rate change sequence and the rate characteristics, calculating a preliminary control sequence of the acid-base addition amount, adopting a self-adaptive
PID control algorithm to adjust parameters, generating an
optimal control sequence, controlling the acid-base addition equipment to adjust the addition amount, obtaining new pH value data, and performing
fast Fourier transform to obtain a stable pH value sequence. The stability of pH value control of the solution is improved.