Recoil Control of Workover Riser System Based on Fuzzy Control Theory
Workover riser system is a key equipment in workover operation,and accident may occurs during the recoil process after emergency disconnect of it.In order to solve the recoil control problem of workover riser sys-tem and reduce the risk in the recoil process,a method of recoil control of workover riser system based on fuzzy con-trol theory was proposed.A split tensioning system model was built based on hydraulic dynamics.The lumped mass method was used to discrete the workover riser into spring-mass-damping units and build a dynamic model of workover riser system.A fuzzy controller was designed based on the fuzzy control theory and the recoil control law of the work-over riser system.A simulation model of the workover riser system was developed using Matlab/Simulink,and rele-vant simulation calculation was carried out.The results show that fuzzy control can better achieve recoil process con-trol of the workover riser system.Compared with the non-controller and PID control,the peak value of axial displace-ment of the workover riser system in the recoil process under fuzzy control is lower,and the valley value is higher.The designed fuzzy controller has good adaptability under different tension ratios and platform motion amplitudes.
workover riserdynamic modelrecoil controlfuzzy control
万方数据
维普
