面向动臂势能再生的主动式储能元件控制策略  

Control strategy of active energy storage component for arm potential energy regeneration

作　　者：蒋梦军 贺湘宇[1] 袁玉林 刘琪 张家彦 JIANG Mengjun;HE Xiangyu;YUAN Yulin;LIU Qi;ZHANG Jiayan(College of Automotive and Mechanical Engineering,Changsha University of Science and Technology,Changsha 410114,China)

机构地区：[1]长沙理工大学汽车与机械工程学院,长沙410114

出　　处：《现代制造工程》2024年第1期63-73,共11页Modern Manufacturing Engineering

基　　金：湖南省研究生科研创新项目(CX20220898);湖南省自然科学基金项目(2022JJ30595);湖南省教育厅科学研究重点项目(21A0190)。

摘　　要：主动式储能元件是一种针对现有液压蓄能器不足而提出的新型气-电混合型储能元件,但其存在着液压能、压缩气体能和电能间的能量耦合问题,导致其工作时抗干扰能力较差,降低了工作液压系统的节能效率。为了解决其存在抗干扰能力差的问题,针对液压挖掘机动臂液压回路的工作特点,提出了利用主动式储能元件实现动臂势能再生的系统架构,并设计了一种自抗扰控制策略及其参数优化方法,通过设计扩张状态观测器来解决干扰和参数不确定性等问题。为验证控制策略的可行性,首先介绍了主动式储能元件的结构;其次,设计了以主动式储能元件为控制对象的自抗扰控制器。建立了基于主动式储能元件的动臂势能再生系统仿真模型,并进行了试验验证。研究结果表明,蓄能器模式、普通控制模式及自抗扰控制模式的回收效率分别为42.81%、56.76%和58.60%;再利用效率分别为96.01%、97.06%和95.81%;再生效率分别为41.1%、55.1%和56.1%。仿真试验验证结果也表明,以主动式储能元件为对象提出的自抗扰控制策略有效地改善了控制性能,增强了系统压力稳定性。An active energy storage component is a new type of gas-electric hybrid energy storage component proposed to address the shortcomings of existing hydraulic accumulators.However,there is an energy coupling problem between hydraulic energy,compression gas energy,and electrical energy,which leads to poor anti-interference ability during operation and reduces the energy-saving efficiency of the working hydraulic system.In order to solve the problem of poor anti-interference ability,a system architecture that uses active energy storage components to achieve arm potential energy regeneration was proposed based on the working characteristics of the hydraulic circuit of the hydraulic excavator arm.A self-disturbance control strategy and its parameter optimization method were designed to solve problems such as interference and parameter uncertainty by designing an expansion state observer.To verify the feasibility of the control strategy,the structure of the active energy storage component was first introduced,followed by the design of a self-disturbance controller based on the active energy storage component as the control object.A simulation model of the arm potential energy regeneration system based on the active energy storage component was established and experimentally verified.The research results show that the recovery efficiencies of the accumulator mode,normal control mode,and self-disturbance control mode are 42.81%,56.76%,and 58.60%,respectively;the reuse efficiencies are 96.01%,97.06%,and 95.81%,respectively;and the regeneration efficiencies are 41.1%,55.1%,and 56.1%,respectively.The simulation and experimental results also show that the self-disturbance control strategy proposed for the active energy storage component effectively improves the control performance and enhances the system pressure stability.

关 键 词：主动式储能元件 液压蓄能器 自抗扰控制器 动臂势能再生 液压节能 

分 类 号：TH137[机械工程—机械制造及自动化]