基于H∞控制的大功率液压泵功能振动系统  

Functional Vibration System of High-Power Hydraulic Pump Based on H∞ Control

作　　者：于明明 龚伟建 YU Ming-ming;GONG Wei-jian(Nanjing Electromechanical Hydraulic Engineering Research Center,Nanjing 21l106)

机构地区：[1]南京机电液压工程研究中心,南京211106

出　　处：《环境技术》2024年第4期71-76,83,共7页Environmental Technology

摘　　要：大功率液压泵在功能振动试验中,常采用无工况的结构验证来考核产品。伴随着大功率液压泵在机载时的工况以及故障的复杂化,仅仅进行结构验证已无法满足实际应用中的功能振动试验考核要求。本文建立了大功率液压泵功能随机振动试验控制系统的简化控制模型,并在此基础上设计了H∞控制器,增强了功能振动试验控制系统的抗干扰能力。通过仿真结果表明所设计的H∞控制器控制效果良好。最后,在受试产品的三个轴向上分别进行现场试验对试验控制系统中的干扰等进行H∞控制验证。试验结果表明,该功能振动试验控制系统能有效地降低每个轴向的产品功能加载所带来的的干扰信号,将响应谱控制在目标谱的容差范围内,顺利地完成了功能随机振动试验,系统功能可靠。In the functional vibration test of high-power hydraulic pump,the structure verification without working condition is often used to evaluate the product.With the complexity of the working conditions and faults of high-power hydraulic pump in the aircraft,only structural verification can not meet the requirements of functional vibration test in practical applications.In this paper,the simplified control model of the functional random vibration test control system of high power hydraulic pump is established,and the Hoo controller is designed on this basis,which enhances the anti-interference ability of the functional vibration test control system.The simulation results show that the designed H∞ controller has good control effect.Finally,field tests were carried out on the three axes of the tested product respectively to verify the H∞ control of the interference in the test control system.The test results show that the functional vibration test control system can effectively reduce the interference signal caused by the functional loading of each axial product,control the response spectrum within the tolerance range of the target spectrum,successfully complete the functional random vibration test,and the system function is reliable.

关 键 词：大功率液压泵 随机振动 H∞控制 功能试验 

分 类 号：V216[航空宇航科学与技术—航空宇航推进理论与工程]