变频驱动钻机自动送钻试验系统的研究  

The research on the experimental system for automatic bit feed with variable frequency drive

作　　者：魏航信[1] 吴伟[1] 职黎光[1] 

机构地区：[1]西安石油大学机械工程学院

出　　处：《石油机械》2009年第3期10-12,50,共4页China Petroleum Machinery

摘　　要：为了更好地开展变频驱动钻机自动送钻技术的研究,研制了一套变频驱动钻机自动送钻模拟试验系统。该系统由送钻系统和加载系统组成。送钻系统由可编程控制器(PLC)、变频器、变频电动机组成的闭环系统来实现自动送钻;加载系统采用以计算机电液开环控制系统模拟钻柱载荷。对系统的硬件、软件设计进行了论述。对于送钻系统的控制算法,采用基于神经网络的PID控制策略,利用神经网络的自学习功能在线调整PID的参数。最后对整个系统进行了试验,在恒值载荷和正弦载荷的作用下,送钻系统均能稳定工作。系统的阶跃响应指标为:最大超调9.2%,调节时间2.3s,峰值时间0.6s,最大稳态误差3.0%,满足应用要求。A simulating experimental system for automatic bit feed with variable frequency drive is developed in order to make an in-depth study of its performance. The system consists of a bit feed subsystem and a loading subsystem. The bit feed subsystem is a closed loop system, making the bit feed automatic with a PLC controller, transducer and motor. The loading subsystem simulates the load of drill stem using the computer-based electro-hydraulic open-loop system. In this paper, the hardware and software of the system is expounded. The control algorithm of the bit feed subsystem is done by a neural network-based PID control method, the parameters of which are adjusted on-line by the self-learning neural network. Finally, the whole system is tested, the results of which show that the bit feed system can work stably under constant loading and sinusoidal loading conditions. The step response indicators of the system are as follows: maximum overshoot is 9.2%, set time 2.3 s, peak time 0.6 s, and maximum stability error 3.0%.

关 键 词：钻机 自动送钻 变频 PID控制 神经网络 

分 类 号：TP271.31[自动化与计算机技术—检测技术与自动化装置] TM614[自动化与计算机技术—控制科学与工程]