双闭环液压盘式刹车自动化优化技术研究

AUTOMATION OPTIMIZING SCHEMES OF HYDRAULIC DISC BRAKE BASED ON DUAL-CLOSED-LOOP PID CONTROL METHOD

随着钻探要求的不断提高,液压盘式刹车的自动化技术得到了广泛的应用。响应特性和微调特性是液压盘式刹车工艺特性的两个重要方面,液压盘式刹车在制动时具有一定的延迟特性,压力的调节具有强烈的非线性。针对液压盘式刹车工艺的特点,提出了采用外环控制悬重、油压内环PID镇定的双闭环PID算法对其制动特性进行优化,使制动压力和悬重得到精确镇定,并将此技术应用到恒钻压自动送钻系统中。室内实验和现场试验结果表明:这种优化使基于液压盘式刹车的自动送钻系统达到了较好的应用效果,同时,室内实验还为自动送钻的现场试验提供了准备平台,也为其他刹车自动化技术的开发和优化提供了有效的参考。

With the requirement of oil exploration,the automation technology of hydraulic disc brake system(HDB)have become more and more widely used. The response characteristic and adjusting accuracy are the two mainbraking performances of hydraulic disc brake systems. After analysis the braking performance of HDB,the delaycharacteristic and nonlinear characteristic are found on HDB. So the optimizing schemes for hydraulic disc brake,such as integral-separated PID algorithm and dual-closed-loop control method are used in the constant weight autodrillingsystem. It has been tested with success both on the integrated braking facility and the oil field. It is provedthat the integrated braking facilities has the feature of testing the braking system and supply some available referencesfor the development of other braking system.