带有蓄能器的新型电静液作动器的启动特性研究（英文）
发布时间：2024-03-29 23:56
电静液作动器(EHA)广泛用于飞机和机器人系统,其应用正在逐步向大型机械设备发展。本文提出了一种在活塞侧连接一个蓄能器的新型EHA结构,该结构用于在空载情况下实现快速启动。此外,当外部负载突然施加或改变时,为了使蓄能器以最佳状态吸收系统压力和流量的脉动,提出了一种新的参数自适应控制方法(PACM)。建立了EHA和PACM的数学模型,并证明了所提出的结构和PACM的可行性和有效性。仿真结果表明,传统液压结构的EHA启动时间为62.8 s,而我们提出的配备蓄能器的EHA的启动时间为2.1 s,这使EHA的启动时间缩短了96.6%。当施加5000N的外部负载时,采用PACM可以使压力脉动降低31%,并且流量曲线过度平滑,可以根据特定的工作条件方便地调整PACM参数。
【文章页数】：12 页
【文章目录】：
1 Introduction
2 Propose d EHA syste m and accumula-tor parame te rs
2.1 System overview
2.2 Control scheme
2.3 Parameters of accumulator
3 Mathe matical mode l of PACM for an accumulator
4 Mathe matical mode l
4.1 Accumulator
4.2 Electric motor
4.3 Hydraulic pump
4.4 Single-rod hydraulic cylinder
4.5 Overall system model
5 Simulation re sults and discussion
5.1 Star-tup characteristics of EHA with HAS＿LSA PID
5.2 Start-up characteristics of EHA with HAS＿LSA PID and accumulator
5.3 Pulsation absorption performance of the accumula-tor using the PACM under different heavy loads
5.4 Pulsation absorption performance of accumulator under different parameters of PACM
6 Conclusions and pe rspe ctive s
本文编号：3941495
【文章页数】：12 页
【文章目录】：
1 Introduction
2 Propose d EHA syste m and accumula-tor parame te rs
2.1 System overview
2.2 Control scheme
2.3 Parameters of accumulator
3 Mathe matical mode l of PACM for an accumulator
4 Mathe matical mode l
4.1 Accumulator
4.2 Electric motor
4.3 Hydraulic pump
4.4 Single-rod hydraulic cylinder
4.5 Overall system model
5 Simulation re sults and discussion
5.1 Star-tup characteristics of EHA with HAS＿LSA PID
5.2 Start-up characteristics of EHA with HAS＿LSA PID and accumulator
5.3 Pulsation absorption performance of the accumula-tor using the PACM under different heavy loads
5.4 Pulsation absorption performance of accumulator under different parameters of PACM
6 Conclusions and pe rspe ctive s
本文编号：3941495
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