摘要
为提高装载机驾驶员作业舒适性,提出了一种基于阻尼多状态切换减振器的装载机半主动座椅悬架系统.分析了阻尼多状态切换减振器的设计原理及油液流动行为,建立了阻尼多状态切换减振器数学模型,通过仿真分析获取了减振器4种阻尼状态下的复原阻尼系数和压缩阻尼系数,在此基础上,进一步构建了装载机半主动座椅悬架系统混杂动力学模型,设计了用于座椅半主动悬架的权值系数模糊自适应调整混杂模型预测控制策略,并在随机路面激励输入下进行了控制策略性能仿真分析.仿真结果表明:所提出的装载机半主动座椅悬架及其控制策略能够有效降低座椅垂向振动加速度均方根值,降幅达35.71%,同时改善座椅悬架动行程达30.88%,驾驶员作业舒适性得到显著提升.
To improve the ride comfort of wheel loader driver during operation, a wheel loader semi-active seat suspension was proposed based on the damping multi-state switching damper. The design principle and the oil flow behaviors of target damper were analyzed to establish the mathematical model of damper. The damper rebound and the compression damping coefficients under four damping states were obtained by the simulation analyses, and the hybrid dynamical model of wheel loader semi-active seat suspension was also established. The hybrid model predictive control strategy with fuzzy adaptive adjustment of weight coefficients for the semi-active seat suspension was designed, and the control performance simulation analysis was conducted under random road excitation. The simulation results show that the proposed wheel loader semi-active seat suspension and the control strategy can effectively reduce the seat vertical vibration by 35.71% and reduce the suspension dynamical deflection by 30.88%, and the ride comfort of wheel loader driver during operation is improved significantly.
作者
陶伟
刘志强
TAO Wei;LIU Zhiqiang(School of Automotive and Traffic Engineering, Jiangsu University, Zhenjiang, Jiangsu 212013, China;Jiangsu Jiaotong College, Zhenjiang, Jiangsu 212028, China)
出处
《江苏大学学报（自然科学版）》
EI
CAS
北大核心
2019年第5期504-510,共7页
Journal of Jiangsu University：Natural Science Edition
基金
国家自然科学基金资助项目(51508031)
关键词
装载机
座椅悬架
阻尼多状态
减振器
模型预测控制
wheel loader
seat suspension
damping multi-state
damper
model predictive control
