摘要
针对一种基于主动单向阀与电磁直线执行器的主动配流式电磁直驱静液作动器能耗机制不明确的问题,建立液压系统的机械-液压耦合模型,将其能量损耗分为以液压缸与柱塞泵组成的能量转换损耗以及液压回路损耗,定量分析液压系统的能耗组成与分布规律。结果表明:负载变化对能量转换损耗的影响较大,且损耗占比始终大于27%;频率的改变增加系统中液压回路的能耗,且其损耗占比始终大于59%;整个工作过程中,系统的有用功比重会随着负载的增加不断提高,随着频率的增加不断降低。
Aiming at the problem that the energy consumption mechanism of an active flow direct-driving electro-hydrostatic ac-tuator(EHA)based on active check valve and electromagnetic linear actuator is unclear,a mechanical-hydraulic coupling model of the hydraulic system of direct-driving EHA was established,its energy loss was divided into the energy conversion loss composed of hydraulic cylinder and plunger pump and the hydraulic circuit loss,and the energy consumption composition and distribution law of the hydraulic system were quantitatively analyzed.The results show that the load change has a great influence on the energy conversion loss,and the loss ratio is always greater than 27%;the change of frequency can increase the energy consumption of hydraulic circuit in the system,and its loss ratio is always greater than 59%;during the whole working process,the proportion of useful work of the sys-tem will increase with the increase of load and decrease with the increase of frequency.
作者
陈雪炜
葛文庆
秦琪晶
陆佳瑜
路志浩
谭草
CHEN Xuewei;GE Wenqing;QIN Qijing;LU Jiayu;LU Zhihao;TAN Cao(School of Transportation and Vehicle Engineering,Shandong University of Technology,Zibo Shandong 255049,China;Shandong Zhongbaokang Medical Appliance Co.,Ltd.,Zibo Shandong 256407,China)
出处
《机床与液压》
北大核心
2023年第23期206-210,共5页
Machine Tool & Hydraulics
关键词
电静液作动器
直驱
能耗
联合仿真
Electro-hydraulic actuator
Direct driven
Energy consumption
Joint simulation
