Study on Fault-Tolerant Technique of Downhole Steering System for Rotary Steering Drilling
Downhole Control System in a modulated rotary steering drilling tool can automatically regulate the tool face angle to a particular position for controlling the bit direction. How to ensure the reliability of the system while it works in harsh environment is a key technique in this system. A degraded fault-tolerant system scheme based on multiMCUs has been put forward according to the functional analysis of the system. Measurement and control functions, data acquisition and storage functions and communication decoding function are shared respectively by three MCUs when they are running normally. The system would be reconfigured based on task priority while they are partly fault, which make the system fault-tolerantly running. Some tests show that the redundant system design and degraded faulttolerant system scheme are effectively.
rotary steering drilling Multi-MCUs system reconfiguration reliability
WANG Yue-long LIU Zi-li CHENG Wei-bin YANG Ying-na
Shaanxi Key Laboratory of Oil-Drilling Rigs Controlling Technique,Xian Petroleum University, Xian, 710065, China
国际会议
2012 International Conference on Measurement,Information and Control(2012测量、信息与控制国际会议 ICMIC2012)
哈尔滨
英文
896-899
2012-05-18（万方平台首次上网日期，不代表论文的发表时间）