扭力冲击器双模射流自适应控制最佳匹配机理研究

项目名称： 扭力冲击器双模射流自适应控制最佳匹配机理研究

项目编号： No.11462021

项目类型： 地区科学基金项目

立项/批准年度： 2015

项目学科： 数理科学和化学

项目作者： 樊军

作者单位： 新疆大学

项目金额： 48万元

中文摘要： 双模射流控制技术在流体运动稳定性及流体传动控制中起到关键的作用，旋转冲击钻井工具的核心部件冲击发生器，就是通过双模射流技术控制变流量钻井流和驱动流产生稳定冲击运动及控制最佳的冲击频率。本研究以建立三通道的射流控制原理模型和产生冲击运动的配液盘原理模型为研究对象，对其进行参数化建模和数值模拟，拟定运动部件产生的空间压力及流速等边界条件变化规律。对稳定频率的冲击运动过程中的动力学机理进行研究，在流体力学的基础上，建立产生稳定双向性冲击、有外部约束条件的力学模型和动力学方程，解决产生稳定双向冲击运动的动力学行为与控制机理。研究稳定频率的冲击运动对流量变化和空间变化的动态响应机理，建立整个循环系统的控制方程组和附加方程，通过时间和空间域的数值求解，获得产生和保持稳定冲击频率的最佳流量匹配控制机理的数值解。并通过实验分析和验证，ADAMS软件对过程的进行动态仿真，为研究扭力冲击器提供必要的理论依据。

中文关键词： 扭力冲击器；双模射流；自适应控制；最佳匹配；稳定冲击频率

英文摘要： Dual jet control technology plays a key role in the stability of fluid motion and fluid power transmission control. The core component of the rotary percussion drilling tool is impulse generator that is controlled by dual jet technology and control drilling flow with variable flow amount to drive it generate stable shock motion and the best impulse frequency. In this study, model of the control theory for three-channel jet and the dispensing tray generating the impact of the movement are established. As the object of the research, through parametric modeling and simulation, the proposed change law of the pressure, flow velocity and other boundary conditions of the moving parts. Based on fluid mechanics and study on dynamic mechanism of impact motion process of stability in frequency, the mechanical model and dynamic equations generating a stable two-way shock with the external constraints are made to solve the dynamic behavior of generating stable bidirectional impact motion and control mechanism. Dynamic response mechanism of change impact motion of flow in frequency stability and varied space is studied. Control equations the circulation system and the additional equations are established and solution of the best optimal matching numerical control mechanism in stability impact frequency flow is produced through the numerical solution of the time and space domains. Moreover, through experimental analysis and verification, dynamic simulation of the process by the ADAMS software is made for providing the necessary theory basis for research of torsion impact apparatus.

英文关键词： Torsion impact apparatus;Dual jet;Adaptive control;Best match;Stability of impact frequency