Research on Pressure Compensation Control Based on Model Reference Adaptive Control

doi:10.3901/JME.2025.24.295

Abstract

Abstract: The rotary drilling rig, as the most widely used equipment in foundation construction, relies on its drilling efficiency as the core competitive strength. However, after long-term service, the pressurization system inevitably experiences performance degradation, which seriously affects pressure control and even lead to a loss of pressure, thereby impacting both construction efficiency and quality. First, a parameter identification model is established using the recursive least squares method with a forgetting factor, which is used to identify the degraded parameters and determine the health status of the pressurization system. Then, based on model reference adaptive control theory, an adaptive compensation controller for pressurization is designed to compensate for the degraded pressurization system. A performance degradation compensation method, coupling health monitoring and compensation control for the pressurization system, is proposed. Simulation and experimental results show that the controller can effectively improve the pressure output of the faulty rig, thus enhancing construction efficiency. Under the same experimental conditions, compared to the original rig, the pressure output of the measured rig increased by 17.8%, and drilling efficiency improved by 8.8%, verifying the effectiveness and feasibility of the controller.

Key words: rotary drilling rig, pressure system, health monitoring, least squares algorithm, model reference adaptive control

CLC Number:

TU67

FENG Junxue, JIA Cunde, KONG Xiangdong, LI Bowen, ZHAO Zhewei, DING Beichen, JIANG Wenguang, AI Chao. Research on Pressure Compensation Control Based on Model Reference Adaptive Control[J]. Journal of Mechanical Engineering, 2025, 61(24): 295-310.

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