Advances in Civil Engineering

Research Article

Design of Constructive Controller of Nonlinear System Based on Polynomial Function Growth Condition and Its Application in Deep Subsea Energy Mining and Production Control System

Table 1

Variable description.
VariableMeaningVariableMeaning
Valve opening cavity supply pressureWorking water depth
Valve positionSpring precompression displacement
Piston areaPiston rod area
Stem areaPiston rod quality
Sea water densityControl fluid viscosity
Spring coefficient of elasticityAcceleration of gravity
Inner diameter of pilot holeResistance during opening of the actuator
Control fluid flowFlow rate of fluid medium in pipeline
Control fluid inlet pressureControl fluid outlet pressure
Control fluid flow rateControl liquid density
Pressure coefficientControl the length of the liquid guide hole
Flow rate of fluid medium in pipelineValve opening