摘要
钻井过程中钻头粘滑振动会导致钻头失速,钻杆组合故障,增加钻井成本。为此,提出了滑模PI控制策略用于电动钻机交流变频旋转系统。在建立钻机旋转系统模型基础上,将滑模控制与PI控制相结合,用于提高系统的鲁棒性,抑制钻头的粘滑振动。仿真结果表明:基于滑模PI控制的钻机交流变频旋转系统,可有效地控制钻头失速,减少钻柱疲劳损坏,改善旋转系统的动态和静态响应特性。
In drilling process, the stick-slip oscillation of a drill bit can lead to stalling and faults of drill pipe combination, which increases the drilling cost. In order to solve those problems, sliding mode PI control strategy is presented for electric drive drilling rig AC variable speed rotary system, on the basis of the mode of rig rotating system, combination of sliding-mode control and PI control, could improve robuseness of the system and restrain the stick-slip oscillation of a drill bit. It is shown by the simulation results that the electric rig ac speed regulation rotating system baced on sliding mode PI control method can effectively avoid drill stallin, reduce damage for drill pipe, improve characteristics of the dynamic and static response of the drilling-rig rotary system.
出处
《电子设计工程》
2012年第5期18-21,共4页
Electronic Design Engineering
基金
陕西省科技攻关项目(2009K09-25)
关键词
钻机旋转系统
粘滑振动
滑模控制
PI控制
drilling-rig rotary system
stick-slip oscillation
sliding mode control
PI control
