Magnetorheological Safety Valve and Control Strategies for Hydraulic Supports
Source abstract
Abstract
With the continuous increase in coal mining depth, rock burst occurs frequently, which poses a serious threat to coal mine safety production. As the key equipment to ensure the stability of coal mine working face, the response characteristics of the hydraulic support safety valve are directly related to the life safety of coal miners and the protection of equipment. To address the problem that the traditional hydraulic support safety valve has a slow response and cannot release pressure rapidly, a new control strategy of a hydraulic support safety valve based on the magnetorheological effect is proposed. The fixed current control strategy and the fuzzy PID strategy based on grey predictive control are studied to improve the response speed and pressure relief efficiency of the safety valve. The effectiveness of the control strategy is verified by AMESim and Simulink co-simulation. The simulation results show that the new control strategy can significantly improve the dynamic response characteristics of the safety valve, shorten the response time and enhance the pressure relief performance. The superiority of the magnetorheological effect safety valve in improving the impact resistance of the coal mine hydraulic support is verified. This study provides a new technical path and theoretical basis for the optimal design of the safety valve of coal mine hydraulic support and the safety protection under rock burst.
Source: crossref · Quality: baseline
Research context
OpenAlex topics: Vibration Control and Rheological Fluids · Geoscience and Mining Technology · Geotechnical and Geomechanical Engineering
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
China Energy Xinjiang Energy Co., Ltd., Urumqi 830400, China
Beijing Tianma Intelligent Control Technology Co., Ltd., Beijing 101399, China
College of Mechanical and Electronic Engineering, Shandong University of Science and Technology, Qingdao 266590, China
Funding
National Natural Science Foundation of China
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