-液压马达常见故障维护方案设计学士学位论文VIP专享

提供全套毕业设计，欢迎咨询湖南机电职业技术学院毕业设计（论文） 课题名称 液压马达常见故障维护 院、 系 电气工程学院 学生姓名 专 业 机电一体化 班 级 机电 1206 班 指导老师 评阅老师 摘要 低速液压马达具有结构紧凑，布置灵活，重量轻，惯性力矩小，调速性能好，低速运转平稳，启动效率高，加速和制动时间短，过载保护容易等优点，因而在国内获得了广泛的应用。但是由于液压马达自身的特别性，在启动和低速运行时不易稳定，常常出现爬行、间停等现象，因此，在液压系统的应用时，液压马达的最低稳定特性往往是需要考虑的重要特性之一。本文建立了轴向柱塞式液压马达系统摩擦扭矩非线性的数学模型，基于 Simulink 集成建模与仿真环境，讨论了摩擦扭矩，泄漏系数，油液压缩率对马达的低速稳定性的影响，获得了液压马达对低速时瞬间角排量的脉动率变化规律，由此，为改善油马达的低速稳定性对读者应实行什么样的措施提出了建议。关键字：液压马达 ；电路设计；故障排除ABSTRACT The low speed great torque hydraulic motor has the merit of the compact structure, nimble arrangement, light weight, small moment of inertia, good performance of modulation of velocity , the efficiency of idling steady start high, the time of accelerates and the stop is short, the over-load protection is easy and so on, But, as a result of own particularity of hydraulic motor, when starting and low speed movement is not easy to be stable, the phenomenon appears crawling, stops and so on frequently , therefore, in the application of hydraulic system, the lowest stability of hydraulic motor often is one of important characteristics which needs to consider. This paper establishes the mathematic model and simulated model of nonlinear friction torque based of axial piston hydraulicmotor by MATLAB simulink integrated modeling and simulation. By taking axial piston hydraulic motor as an example，investigates the effects of friction torque and hydraulic motors parameters such as coefficient of...