Application of Model -Free Adaptive Control in Managed Pressure Drilling

2018 IEEE International Conference of Safety Produce Informatization (IICSPI) Pub Date : 2018-12-01 DOI:10.1109/IICSPI.2018.8690445

Song Luqing, Hu Wenjin, Liu Kaishu, W. Xiaogang, Song Lepeng

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引用次数: 2

Abstract

Aiming at the characteristics of large lag, strong interference, nonlinearity and difficult pressure control in pressure controlled drilling, this paper designs an automatic control system for pressure controlled drilling without model adaptive control. The automatic control system consists of signal input device, pressure controlled drilling electronic control unit, actuator and other devices. In order to improve the speed and stability of pressure control in pressure drilling, a model-free adaptive control scheme is proposed. The control scheme only needs on-line I/O data of the controlled system to complete the design of the controller, which has strong resistance to nonlinearity and is suitable for more complicated control projects. The system is modeled and simulated in MATLAB. The experimental results show that compared with cascade PID control, the pressure regulating time of the automatic control system of pressure controlled drilling using model-free adaptive control scheme is shorter and the pressure change curve is smoother, which can better meet the control requirements of the automatic control system of pressure controlled drilling.

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无模型自适应控制在控压钻井中的应用

针对压控钻井滞后大、干扰强、非线性和压力控制困难的特点，设计了一种无模型自适应控制的压控钻井自动控制系统。自动控制系统由信号输入装置、压控钻井电子控制单元、执行器等装置组成。为了提高压力钻井中压力控制的速度和稳定性，提出了一种无模型自适应控制方案。该控制方案只需要被控系统的在线I/O数据即可完成控制器的设计，具有较强的抗非线性能力，适用于较复杂的控制工程。在MATLAB中对系统进行了建模和仿真。实验结果表明，与串级PID控制相比，采用无模型自适应控制方案的压控钻孔自动控制系统的调压时间更短，压力变化曲线更平滑，能更好地满足压控钻孔自动控制系统的控制要求。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

2018 IEEE International Conference of Safety Produce Informatization (IICSPI)

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