摘要
液压系统的流量脉动和压力脉动始终以耦合关系存在于系统中,导致系统的控制精度下降和元件疲劳损失加快等问题。由于液压系统具有参数时变和负载多变等特点,相比于流体脉动的被动控制方法,主动控制能更好地满足复杂非线性系统对动态控制精度的要求。根据次级脉动源的不同,分析主动控制的工作原理和控制特点,列举四种在液压系统流体脉动主动控制中常用的控制算法及其应用场合。此外,以伺服作动筒控制、液压阀控制和非侵入式结构控制进行分类,分析国内外液压系统流体脉动主动控制方法的研究成果。总结流体脉动主动控制方法的研究现状与未来发展方向。
The flow pulsation and pressure pulsation always exist in hydraulic systems in a coupling relationship, which leads to the problems of the control accuracy decrease of the system and the accelerated fatigue loss of the components. Due to the characteristics of time-varying parameters and variable load of the hydraulic system, active control can better meet the requirements of the dynamic control accuracy of the complex nonlinear system compared to passive control for fluid pulsation. Based on different secondary pulsating sources, the working principle and the control characteristics of the active control methods are analyzed, and four common control algorithms and their application occasions for fluid pulsation active control in hydraulic systems are listed. In addition, the research results of the active control methods for fluid pulsation in hydraulic systems at home and abroad are analyzed by servo actuator control, hydraulic valve control and non-intrusive structural control. In the end, the research status and the future development directions of fluid pulsation active control are summarized.
作者
商夏
周华
杨华勇
SHANG Xia;ZHOU Hua;YANG Huayong(State Key Laboratory of Fluid Power and Mechatronic Systems,Zhejiang University,Hangzhou 310027)
出处
《机械工程学报》
EI
CAS
CSCD
北大核心
2019年第24期216-226,共11页
Journal of Mechanical Engineering
基金
国家自然科学基金创新研究群体(51521064)
浙江省重点科技创新团队自主设计(2013TD01)资助项目
关键词
主动控制
流体脉动
液压系统
消振
自适应控制
active control
fluid pulsation
hydraulic systems
vibration attenuation
adaptive control
