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Adaptive Second Sliding Mode Control for Stabilized Platform of Rotary Steering Drilling Tool

机译:旋转导向钻井工具稳定平台的自适应第二滑模控制

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This paper proposes an adaptive second sliding mode (SOSM) control strategy to control the stabilized platform of rotary steering drilling tool. Stabilized platform is typical uncertain system, and using traditional sliding mode control (SMC) needs to know the upper bound of uncertainty firstly, which cannot be satisfied for stabilized platform under work condition. Meanwhile, the input chattering phenomenon exists inevitably. Therefore, using adaptive SOSM method can solve the two problems. SOSM controller eliminates the input chattering, and the design of adaptive tuning law for SOSM controller overcomes the limitation of prior knowledge about the uncertain upper bound. Simulation results show that the proposed control strategy can make stabilized platform achieve good control performance and robustness.
机译:提出了一种自适应第二滑模控制策略,以控制旋转导向钻井工具的稳定平台。稳定平台是典型的不确定性系统,使用传统的滑模控制(SMC)首先需要确定不确定性的上限,这对于稳定平台在工作条件下是无法满足的。同时,不可避免地存在输入颤动现象。因此,使用自适应SOSM方法可以解决两个问题。 SOSM控制器消除了输入颤动,SOSM控制器的自适应调整律的设计克服了关于不确定上限的先验知识的限制。仿真结果表明,所提出的控制策略可使稳定平台获得良好的控制性能和鲁棒性。

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