摘要
在介绍了液压减摆器的工作原理和基本结构的基础上,运用牛顿运动力学和流体运动力学建立了考虑油液压缩性时液压减摆器的基本数学模型。运用MATLAB/Simulink对液压减摆器的数学模型进行仿真分析,研究在特定输入力矩条件下,油液压缩性对液压减摆器腔内压力变化规律的影响。仿真结果表明,油液的压缩性使液压减摆器腔内压力出现延迟输出并影响其运动过程中腔内压力的变化规律,即由于油液的可压缩特性,液压减摆器在工作过程中依然存在再次振动的可能。所以,在生产制造液压减摆器时,应尽量减小油液压缩特性对液压减摆器性能的影响。
This paper introduces the operational principle and basic structure of hydraulic dampers, applying Newton＇s mechanics and fluid mechanics to build the mathematical model of hydraulic dampers which is related to oil compressibility. Simulate the mathematical model of hydraulic dampers by using MATLAB/simulink under the condition of a particular input torque, studying the impact on the change rule of hydraulic oil cavity pressure caused by oil compressibility. The simulate results show that oil compressibility delayed the output of hydraulic dampers cavity pressure and affect the changing regularity of the movement process within the lumen. Namely, hydraulic dampers will not eliminate the vibration completely in the process of work because of the compressible characteristics of oil. The effect that produced by oil compressibility on the performance of hydraulic dampers should be decrease in the process of manufacturing hydraulic dampers.
出处
《液压气动与密封》
2016年第1期48-50,共3页
Hydraulics Pneumatics & Seals
关键词
液压减摆器
数学模型
油液压缩性
分析
hydraulic damper
mathematical model
oil compressibility
analysis
