A Pressure Control Method for Emulsion Pump Station Based on Elman Neural Network

Table 3

Control system specifications of three methods.

Parameter	PID control	Fuzzy PID	Prediction control
Range/MPa	23.5~27.5	24.4~25.9	27.12~28.93
Mean value/MPa	25.295	25.204	28.026
Variance/MPa	1.056	0.448	0.248
Max error/MPa	4.5	3.6	0.93
Relative coefficient	0.02	−0.07	0.63