面向流体传动与控制应用系统的容错原理与纠错方法的研究
发布时间：2018-10-12 09:28
【摘要】：流体传动和控制系统在各类机械设备中占有重要的地位，容错纠错技术是提高流体传动和控制系统可靠性和安全性的一种有效手段。本文以液压控制阀的容错纠错技术研究为主线，设计了具有容错功能的换向阀和具有纠错功能的平衡阀的新结构，对上述两种控制阀的静态性能和动态性能进行了较为深入和系统的分析和研究。 三位四通液压换向阀是液压系统中重要的元件，传统的三位四通换向阀在结构上要么是滑阀结构，要么是转阀结构，当出现故障时，无法继续完成正常的换向功能。本文将滑阀与转阀集成到一个阀体结构中，详细阐述了该阀的结构原理，对其结构进行了具体设计，分析了该阀实现滑阀功能、转阀功能以及故障发生后的切换原理。根据该阀在直线移动和旋转运动两种工作方式下的数学模型，分别分析了它们的静态特性与动态特性，结果表明文中所设计的换向阀不仅具有较好的静态与动态特性，而且它所具有的容错功能还可以进一步提高液压系统的安全性与可靠性。 液压平衡阀在液压系统中具有限速与安全的作用，作为一种重要的液压元件，在现代工程机械中应用十分广泛。传统的平衡阀在速度控制与安全功能方面存在一定的缺陷，本文在平衡阀结构上进行了创新设计，一方面将纠错设计思想应用于设计，另一方面首次提出具有直接反馈功能的控制活塞结构。结合该阀的结构原理进行了详细的结构设计，阐述了该阀如何实现正常起升功能、保持静止功能、正常下降功能以及紧急情况的纠错功能，验证了设计的合理性。根据该阀的数学模型，分析了它的静态特性与动态特性，结果表明所设计的平衡阀不仅具有良好的速度控制功能，而且具有危急状态下的纠错功能，，使液压系统的安全性得到了显著提高。 本文进行的液压控制阀的创新设计及其容错纠错技术研究，将为液压系统的容错纠错提供一些新的有效的理论、方法与技术。
[Abstract]:Fluid transmission and control system plays an important role in all kinds of mechanical equipment. Fault tolerance and error correction technology is an effective means to improve the reliability and safety of fluid transmission and control system. Based on the research of fault-tolerant and error-correcting technology of hydraulic control valve, a new structure of reversing valve with fault-tolerant function and balancing valve with error-correcting function is designed in this paper. The static and dynamic performances of the two control valves are analyzed and studied. The three-position four-way hydraulic reversing valve is an important component in the hydraulic system. The traditional three-position four-way directional valve is either a sliding valve structure or a rotary valve structure. When the failure occurs, it can not continue to complete the normal reversing function. In this paper, the sliding valve and the rotary valve are integrated into a valve body structure, the structure principle of the valve is expounded in detail, the structure of the valve is designed in detail, and the function of the sliding valve, the function of the rotary valve and the switching principle after the failure are analyzed. The static and dynamic characteristics of the valve are analyzed according to the mathematical models of the valve under the two working modes of straight line movement and rotating motion. The results show that the directional valve designed in this paper not only has better static and dynamic characteristics, but also has the following characteristics: 1. Moreover, the fault-tolerant function can further improve the safety and reliability of hydraulic system. As an important hydraulic component, hydraulic balancing valve is widely used in modern construction machinery. The traditional balance valve has some defects in speed control and safety function. In this paper, the structure of the balance valve is innovated. On the one hand, the error-correcting design idea is applied to the design. On the other hand, the control piston structure with direct feedback function is proposed for the first time. Combined with the structure principle of the valve, the structure of the valve is designed in detail, and how to realize the normal lifting function, the static function, the normal descent function and the error-correcting function of the emergency situation are expounded, and the rationality of the design is verified. According to the mathematical model of the valve, the static and dynamic characteristics of the valve are analyzed. The results show that the designed balance valve not only has good speed control function, but also has the error correction function in critical state. The safety of hydraulic system has been greatly improved. The innovative design of hydraulic control valve and its fault-tolerant and error-correcting technology in this paper will provide some new and effective theories, methods and techniques for fault-tolerant and error-correcting of hydraulic system.
【学位授予单位】：电子科技大学
【学位级别】：硕士
【学位授予年份】：2012
【分类号】：TH137.52
本文编号：2265618
[Abstract]:Fluid transmission and control system plays an important role in all kinds of mechanical equipment. Fault tolerance and error correction technology is an effective means to improve the reliability and safety of fluid transmission and control system. Based on the research of fault-tolerant and error-correcting technology of hydraulic control valve, a new structure of reversing valve with fault-tolerant function and balancing valve with error-correcting function is designed in this paper. The static and dynamic performances of the two control valves are analyzed and studied. The three-position four-way hydraulic reversing valve is an important component in the hydraulic system. The traditional three-position four-way directional valve is either a sliding valve structure or a rotary valve structure. When the failure occurs, it can not continue to complete the normal reversing function. In this paper, the sliding valve and the rotary valve are integrated into a valve body structure, the structure principle of the valve is expounded in detail, the structure of the valve is designed in detail, and the function of the sliding valve, the function of the rotary valve and the switching principle after the failure are analyzed. The static and dynamic characteristics of the valve are analyzed according to the mathematical models of the valve under the two working modes of straight line movement and rotating motion. The results show that the directional valve designed in this paper not only has better static and dynamic characteristics, but also has the following characteristics: 1. Moreover, the fault-tolerant function can further improve the safety and reliability of hydraulic system. As an important hydraulic component, hydraulic balancing valve is widely used in modern construction machinery. The traditional balance valve has some defects in speed control and safety function. In this paper, the structure of the balance valve is innovated. On the one hand, the error-correcting design idea is applied to the design. On the other hand, the control piston structure with direct feedback function is proposed for the first time. Combined with the structure principle of the valve, the structure of the valve is designed in detail, and how to realize the normal lifting function, the static function, the normal descent function and the error-correcting function of the emergency situation are expounded, and the rationality of the design is verified. According to the mathematical model of the valve, the static and dynamic characteristics of the valve are analyzed. The results show that the designed balance valve not only has good speed control function, but also has the error correction function in critical state. The safety of hydraulic system has been greatly improved. The innovative design of hydraulic control valve and its fault-tolerant and error-correcting technology in this paper will provide some new and effective theories, methods and techniques for fault-tolerant and error-correcting of hydraulic system.
【学位授予单位】：电子科技大学
【学位级别】：硕士
【学位授予年份】：2012
【分类号】：TH137.52
【参考文献】
相关期刊论文 前10条
1 刘勇,沈毅,胡恒章;传感器故障检测、分离与恢复的神经网络方法[J];传感技术学报;1999年04期
2 张彦铎,姜兴渭;多传感器信息融合及在智能故障诊断中的应用[J];传感器技术;1999年03期
3 杨国平，贺尚红，李自光，颜荣庆;新型平衡阀数字仿真研究[J];长沙交通学院学报;1995年03期
4 魏建华，路甬祥，吴根茂;容错式汽轮机阀门电液执行机构[J];动力工程;1995年04期
5 李福尚,魏建华,路甬祥,吴根茂,徐臣;实现汽轮机阀门快关在线实验的一种容错控制策略[J];动力工程;1997年04期
6 廖义德,李壮云;带压力补偿平衡阀的设计及性能研究[J];锻压装备与制造技术;2003年03期
7 查晓春,李定华;先导式液压平衡阀动态性能及有关参数设计与分析[J];机床与液压;1994年03期
8 阮健,裴翔,姜伟;2D电液数字换向阀的实验研究[J];机床与液压;1999年05期
9 邓乐;多传感器信息融合技术与液压系统状态监测、故障诊断[J];机床与液压;2004年02期
10 石培吉;施国标;林逸;赵万忠;;转阀式液压助力转向系统建模与仿真分析[J];机床与液压;2009年02期
相关博士学位论文 前2条
1 胡静波;装载机容错线控转向系统研究[D];吉林大学;2008年
2 崔剑;回转直动式电液伺服阀关键技术研究[D];浙江大学;2008年
相关硕士学位论文 前5条
1 贺辉;新型工程机械液压平衡阀的设计与试验研究[D];湖南大学;2002年
2 杨玻玻;基于人工免疫原理的故障检测模型与容错控制方法研究[D];电子科技大学;2008年
3 周曲珠;基于模糊灰色理论汽车液压转阀的特性研究[D];苏州大学;2008年
4 胡启祥;电液余度数字阀在船舶液压舵机系统中的应用研究[D];浙江工业大学;2009年
5 张兴明;新型平衡阀的设计及仿真研究[D];大连海事大学;2010年
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