大功率电液压转向控制系统的仿真研究

机械设计制造及其自动化论文，论文编号:JX1104  论文字数:16327.页数:43

摘   要
    液压马达，尤其是低速大扭矩马达，均可直接驱动负载。液压马达力密度大，在同等功率输出情况下，其重量，尺寸仅为直流电马达的5%-20%，相对质量很轻，所以转动惯量小。启动、制动、反向运转快速性及低速稳定性好，并可方便地实施无级调速，这些优点使得近20年来液压马达和液压技术在全世界都得以迅速地推广应用和深入普及。
 仿真技术作为液压系统或元件设计阶段的必要手段, 已被业界广泛认识。随着流体力学、现代控制理论、算法理论、可靠性理论等相关学科的发展, 特别是计算机技术的突飞猛进, 液压仿真技术也日益成熟, 越来越成为液压系统设计人员的有力工具。
 本论文研究了起重机上液压马达的作用，重点研究马达驱动电液转向回路的仿真模拟，并以30吨物体以1m/s的速度匀速上升作为负载实例。从液压元件的选型，液压回路的设计，以及FluidSIM软件仿真，和液压故障的发现和排除方法。
     本论文共分五章，分述如下：
第一章 绪论，阐述课题背景以及模拟仿真的关键技术
第二章 介绍FluidSIM的应用，以及一个实例的解说
第三章 液压马达结构和性能
第四章 回路方案的设计与仿真分析
第五章 总结

关键词：液压马达 模拟仿真 大功率 电液压
ABSTRACT
 Hydraulic motor, especially, low speed motor can directly drive the load. Hydraulic motor is power density,  when power output in the same caset, its weight and size are only 5% to 20% of DC motor. The relative quality is much lighter, so the inertia is small. It has good stability when Start running , braking, Fast reverse operation and Low-speed stability . Also it can be easily implement stepless speed . These advantages make hydraulic pressure motor and hydraulic technology all over the world to rapidly promote application and popularization nearly 20 years.
 Simulation technology for hydraulic system or components design phase, and the necessary means it has been widely known by industry. With the fluid mechanics, modern control theory, the theory of reliability, the algorithm of related disciplines, especially the development of computer technology by leaps and bounds, hydraulic simulation technology is increasingly becoming mature . And hydraulic system designing is becoming a powerful tool for the deisigners.
 This paper investigates the role of cranes on the hydraulic motor, focusing on electro-hydraulic steering motor drive circuit simulation with 30 tons of objects in the 1m/s speed up as the load example. It contains the selection of hydraulic components, hydraulic circuit design, and FluidSIM software simulation, including the hydraulic fault finding and eliminating methods.
 This paper is divided in chapter 5 points, as follows:
 Chapter 1 Expound background of this topic and simulation of key technology
 Chapter 2 Introduced the application of FluidSIM and an example of interpretation
 Chapter 3 Hydraulic motor structure and performance
 Chapter 4 Circuit design and simulation analysis
 Chapter 5 Summarize
 
Keywords: hydraulic motor  high-power electric  hydraulic-power  simulation
  
目录
摘   要 i
ABSTRACT ii
第一章 绪论 1
1.1 课题背景 1
1.2 研究意义 1
1.3 文献综述 1
1.3.1建模方法的分类 2
1.3.2液压仿真技术的发展趋势 3
1.4模拟与仿真关键技术 4
第二章 FluidSIM的应用 6
2.1 FuidSIM软件介绍 6
2.2搬运工件机械手液压传动系统设计 7
2.3 结论 9
第三章 液压马达的结构和性能 10
3.1 液压马达的特点及分类 10
3.2液压马达主要参数计算 10
3.3液压马达的主要结构形式与原理 11
3.4高速液压马达常见结构特点 13
3.5 各种液压马达的适用工况和应用范围 20
第四章 方案设计 23
4.1液压回路的连接 23
4.2液压马达的选择 24
4.3液压马达参数的计算 24
4.4 仿真回路的分析 26
4.5液压马达转向系统典型故障分析及解决 36
第五章 总结 37
参考文献 38
致谢 39