摘要
泥浆压力波发生器通过控制转阀产生压力波信号,是石油钻井和煤矿开采中的重要通信装置。针对压力波信号调制和转阀控制需求:首先提出下边带恒包络平滑相位调制方法,保证信号幅值恒定并降低驱动功率需求;然后,基于自抗扰控制算法设计控制系统,实现转阀位置精准控制,保证压力波信号质量;最后,开发具备力矩加载、参数调试和数据管理等功能的实验测试装置对所提方法进行验证。实验结果表明,所提方法有效实现了压力波信号平滑相位调制和转阀抗干扰控制。所提方法和实验装置具有多学科融合特性,有助于提高学生解决实际复杂工程问题的能力。
[Objective]As automated drilling technologies become more prevalent,the demand for data communication while drilling has significantly risen,leading to increased requirements for downhole data communication systems.Currently,pressure wave data communication,which utilizes mud as the transmission medium,is the leading technology in these systems.The core component of these systems is the mud pressure wave generator(MPWG),which produces pressure wave signals with specific phases by adjusting the flow area of the mud through the operation of a rotary valve.Therefore,phase modulation of pressure wave signals and the control method of the rotary valve are critical technologies for the MPWG.Unlike conventional phase modulation methods,the phase of the pressure wave signal cannot change abruptly.Additionally,the drilling mud scours the rotary valve,introducing torque disturbances that make it challenging for the valve to accurately reach the desired position,ultimately reducing the quality of the pressure wave signal.[Methods]To tackle the issues of phase modulation of pressure wave signals and rotary valve position control,this paper proposes a lower sideband constant envelope smooth phase modulation method for pressure signals.Under the condition of maintaining a constant pressure wave amplitude,we introduce a parameter called the adjustable symbol transition time ratio(ASTTR)to achieve smooth phase modulation,along with a lower-sideband modulation method designed to reduce power consumption.Following this,a rotary valve position control system for the MPWG is designed.The speed and position controllers are designed using the active disturbance rejection control algorithm to ensure accurate tracking of the rotary valve position setpoint,even in the presence of external disturbance torques.Finally,a testing device is developed that integrates torque loading,parameter tuning,and data management functions to validate the proposed methods.This device allows for teaching experiments and testing of the MPWG to be conducted
作者
王伟亮
耿艳峰
盛立
时运
李铭磊
WANG Weiliang;GENG Yanfeng;SHENG Li;SHI Yun;LI Minglei(College of Control Science and Engineering,China University of Petroleum(East China),Qingdao 266580,China)
出处
《实验技术与管理》
CAS
北大核心
2024年第10期43-50,共8页
Experimental Technology and Management
基金
国家自然科学基金青年科学基金项目(62203467)
国家自然科学基金重点项目(62033008)
山东省自然科学基金青年基金项目(ZR2021QF037)
中央高校基本科研业务费专项资金资助(22CX06035A)
教育部高等学校自动化类专业教学指导委员会第五批(2024年)教改研究面上项目(2024013)
山东省研究生精品课程(2023-7)
山东省一流本科课程(2024-87)。
关键词
压力波发生器
相位调制
自抗扰控制
压力波数据通信
实验装置
pressure wave generator
phase modulation
active disturbance rejection control
pressure wave data communication
experimental device
