基于模糊PID控制的矿用自卸车满载和空载平顺性优化  

Optimization of Full-load and No-load Ride Comfort of Mining Dump Truck Based on Fuzzy PID Control

作　　者：贾宏玉 王颖 JIA Hongyu;WANG Ying(School of Civil Engineering,Inner Mongolia University of Science and Technology,Baotou 014000,China)

机构地区：[1]内蒙古科技大学土木工程学院

出　　处：《机械工程师》2019年第7期33-36,共4页Mechanical Engineer

基　　金：内蒙古自治区自然科学基金(2018LH01006);内蒙古科技大学土木工程学院研究中心项目(TMY201702)

摘　　要：为了进一步满足矿用自卸车在空载和满载两种工况下的平顺要求,建立了1/4车辆二自由度矿用自卸车主动悬架模型。分别使用PID控制器和模糊PID控制两种控制方式。以车身垂直加速度和车身垂直加速度变化率作为控制器的输入信号,对主动悬架系统进行仿真分析。对空载和满载两种工况下的矿用自卸车轮胎动载荷、悬架动行程和垂直加速度的均方根值进行比较。结果表明,被动悬架空载时的车辆平顺性要比满载时差。垂直加速度值差异最为明显,相差了91.10%。使用两种控制方式对两种工况都有优化效果,模糊PID的优化效果要更好,空载比满载的优化效果好,垂直加速度的优化效果要比其他两个好。In order to further meet the smooth requirements of mining dump trucks under two kinds of conditions with no-load and full-load.The 1/4 active suspension model of two degree-of-freedom mining dump trucks is established.PID controller and Fuzzy PID control method are used respectively.The active suspension system is simulated and analyzed by using the vertical acceleration and the change rate of the vertical acceleration of the body as the input signal of the controller.The root mean square values of the dynamic load of the wheel,the dynamic deflection of the suspension and the vertical acceleration of the mining dump trucks are compared under the conditions of no-load and full-load.The simulation results show that the smoothness of passive suspension is worse than that of full load.The difference in vertical acceleration value is the most obvious,with a difference of 91.10%.The two control modes have optimized effects for both working conditions,the optimization effect of fuzzy PID is better,the optimization effect of no-load is better than full-load,and the optimization effect of vertical acceleration is better than the other two.

关 键 词：矿用自卸车 满载和空载 模糊PID控制 平顺性 

分 类 号：U461.4[机械工程—车辆工程]