【摘要】 钻机自动送钻系统的控制对象存在大时滞、非线性和难以建立精确数学模型等问题。提出将模糊控制技术应用于自动送钻。概述了变频自动送钻原理,完成了模糊控制器设计。根据PLC的特点,给出了模糊控制在PLC上的实现方法和基于西门子S7-300 PLC的模糊控制器的设计方法。在钻机上试验的结果表明,利用PLC实现模糊控制简单可靠,控制效果良好,能够满足现场生产要求。更多还原

【Abstract】 The auto-drilling system of oil rigs has problem of the long time lag and nonlinearity and the precise mathematic model that is hard to build.To apply a fuzzy-control method on auto-drilling is proposed.The principles of auto-drilling with variable frequency drive and complete the design of fuzzy-controller was explained.According to the principles of fuzzy control and the features of PLC,a method of realizing fuzzy control based on the PLC is proposed,and suggests a design of the fuzzy controller based on Siemens S7-300 PLC.The effective control for auto-drilling has been realized on the experimental installation.The experiment results indicate that the fuzzy control system is reliable and efficient in operating and thus better than the traditional PID control in performance.更多还原