摘要
为了得到更准确的叶片式液压摆动油缸(摆动油缸)动态特性数学模型,并提高现有摆动油缸的动态性能,对摆动油缸动态特性数学模型力矩平衡方程中由粘性阻尼产生的力矩项进行了改进,运用MATLAB/Simulink对摆动油缸进行仿真,对比数学模型改进前后的角速度响应曲线和高压腔压力曲线,发现数学模型中粘性阻尼产生的力矩对分析摆动油缸的动态特性影响较大,验证了数学模型改进的必要性。对摆动油缸响应快速性和运动平稳性分析,指出影响摆动油缸响应速度和稳定性的主要因素。通过减小摆动油缸油腔与输油管油液总体积对摆动油缸动态性能进行优化,结果表明优化后摆动油缸动态性能得到较大提升。
To obtain a more accurate mathematical model of Rotary Vane Actuator(RVA) dynamic characteristics and improve the dynamic performance of RVA,a more accurate mathematical model of RVA dynamic characteristics is established.The MATLAB/Simulink is used to simulate RVA,comparing the angular velocity response curve and the high pressure cavity pressure curve before and after the improvement of the mathematical model,it is found that the moment generated by the viscous damping in the mathematical model has a great influence on the analysis of the dynamic characteristics of the oscillating cylinder,which verifies the necessity of the improvement of the mathematical model.Analysis of the response speed and motion stability of RVA,pointing out the main factors affecting the response speed and stability of RVA.The dynamic performance of RVA is optimized by reducing the oil volume of RVA and the total volume of the oil pipe.The results show that the dynamic performance of RVA is greatly improved.
作者
李昭
谢良喜
罗刚
罗中正
加闯
LI Zhao;XIE Liang-xi;LUO Gang;LUO Zhong-zheng;JIA Chuang(College of Machinery and Automation,Wuhan University of Science and Technology,Wuhan 430081,China)
出处
《组合机床与自动化加工技术》
北大核心
2019年第7期9-12,共4页
Modular Machine Tool & Automatic Manufacturing Technique
基金
国家自然科学基金项目(51375352)
关键词
摆动油缸
粘性阻尼
动态特性
rotary vane actuator
viscous damping
dynamic characteristics
