基于变幅信号前馈和倾角反馈的调平性能提升  

Improvement of Leveling Performance Based on Luffing Signal Feed-forward and Inclination Angle Feedback

作　　者：赵燕 王骏[1] 焦祥 吴广宁 ZHAO Yan;WANG Jun;JIAO Xiang;WU Guang-ning(School of Mechanical Technology,Wuxi Institute of Technology,Wuxi,Jiangsu 214000)

机构地区：[1]无锡职业技术学院机械技术学院,江苏无锡214000

出　　处：《液压与气动》2022年第8期155-161,共7页Chinese Hydraulics & Pneumatics

基　　金：“智能制造装备设计及工程应用”江苏高等学校优秀科技创新团队(苏教科函[2019]7号)。

摘　　要：为解决初始变幅起升时消防车工作平台与水平面的夹角超调量大的问题,结合测试数据及电液系统参数,利用多学科耦合仿真分析的方法,搭建变幅起升和调平系统的仿真模型,对影响调平性能的潜在影响因子进行了定量分析并提出改进方案。仿真结果和整机测试数据均表明:在工作平台倾角反馈控制的基础上,引入电液比例变幅阀的控制信号作为前馈信号,同时设置合理的电液比例调平阀的死区补偿量,可有效提高初始变幅起工况下的调平性能。对提升消防车的调平系统性能具有借鉴意义和参考价值。In order to solve the problem of large angle overshoot between fire truck bucket and horizontal plane during the initial luffing lifting,combined with test data and electro-hydraulic system parameters,the simulation model of luffing lifting and leveling system is established by using the multidisciplinary coupling simulation analysis method,the potential influencing factors affecting the leveling performance are quantitatively analyzed,and the improvement scheme is put forward.The simulation results and test data of the whole machine show that on the basis of working platform inclination angle feedback control,the control signal of the electro-hydraulic proportional luffing valve is introduced as the feed-forward signal,and the dead zone compensation of electro-hydraulic proportional leveling valve is set reasonably,it can effectively improve the leveling performance under the condition of initial luffing up movement.This method has reference significance and reference value for improving the performance of leveling system of fire truck.

关 键 词：变幅系统 调平系统 变幅信号前馈 角度反馈 死区补偿 

分 类 号：TH137[机械工程—机械制造及自动化]