模糊控制在大载荷高精度液压控制系统中的应用  

Application of Fuzzy Control in the Hydraulic System with Big-Load and High Precision

作　　者：傅星[1] 李梦超[1] 胡晓东[1] 郭彤[1] 胡小唐[1] 

机构地区：[1]天津大学精密测试技术及仪器国家重点实验室,天津300072

出　　处：《天津大学学报（自然科学与工程技术版）》2004年第8期750-752,共3页Journal of Tianjin University：Science and Technology

基　　金：天津市重点攻关基金资助项目(003108611).

摘　　要：在全尺寸采油工具综合参数检测与试验系统中,需要在全量程内对大载荷变化的液压系统进行高精度控制,常规的控制方式容易导致很大的控制偏差甚至超限.利用模糊理论,研制了适用于液压控制的模糊控制算法.在大庆油田两年多的实际应用证明,这种算法有效地避免了应用常规算法容易引起的控制量的振荡和过冲,提高了载荷施加的精度,在0～1000kN量程范围内,载荷的最大偏差为1kN,全量程控制精度优于0.2%.进而提高了井下采油工具检验和采油工艺试验研究数据的准确性和可信度,使该系统成为有实际应用价值的检验与试验研究系统.In the integrated testing system for full scale downhole tools of oil production, it′s necessary to accurately control the hydraulic system with the load changing tempestuously in the full-range. The control error may be bigger, even over the limit with the conventional control way. In this paper the fuzzy control algorithm specially aimed at the hydraulic system is introduced based on the fuzzy theory. With the way the testing system has succeeded in Daqing oil field for more than two years. The oscillating and excess of the parameter controlled in the original way is effectively avoided. The loading precision is raised up to 0.2% in the range of 0-1 000 kN, and the maximum loading error is only 1 kN. So the data of tests and experiments with the system are exact and believable. It has been proved that the testing and experiment system is valuable to use actually.

关 键 词：模糊控制 液压控制系统 液压传动 载荷 采油工艺 

分 类 号：TE355[石油与天然气工程—油气田开发工程] TP271.31[自动化与计算机技术—检测技术与自动化装置]