融合虚拟仿真与局部线性嵌入算法的变速箱振动测点优化研究  

Optimization of Vibration Measuring Points of Gearbox using Virtual Simulation and Locally Linear Embedding Algorithm

作　　者：江鹏程 杨大为 冯辅周 赵永东 Jiang Pengcheng;Yang Dawei;Feng Fuzhou;Zhao Yongdong(Department of Vehicle Engineering, Army Academy of Armored Forces, Beijing 100072, China)

机构地区：[1]陆军装甲兵学院车辆工程系,北京100072

出　　处：《机械科学与技术》2020年第3期461-467,共7页Mechanical Science and Technology for Aerospace Engineering

摘　　要：为克服某型行星变速箱故障试验测点选择依赖经验导致有效信息遗失或信息冗余的弊端,论文提出了一种融合虚拟仿真技术与局部线性嵌入算法的振动测点优化方法。在ADAMS软件中建立行星变速箱齿轮-箱体刚柔耦合动力学模型,对不同齿轮状态下箱体表面振动信号进行了仿真;在箱体表面初选传感器测点的基础上,仿真分析了各测点振动信号的各项特征参数;采用局部线性嵌入算法对测点特征参数所构成的高维特征矩阵进行降维,获得了不同齿轮状态下的测点敏感度排序,最后采用加权计算方法得到了振动测点重要度综合排序。结果表明,变速箱各行星排正上方箱体表面和左侧轴承正上方竖直方向测点对太阳轮断齿、行星轮断齿和正常工况区分均具有较高敏感度,可重点采集分析这些测点振动信号来反映齿轮状态,为后续实测试验打下了基础。In order to overcome the drawbacks of the effective information loss or redundancy caused by subjectively selecting sensor measuring points in planetary gearbox fault detection.In this paper,an optimization method of vibration measuring points based on virtual simulation technology and locally linear embedding algorithm was studied.The planetary gearbox rigid-flexible coupling dynamics model was firstly established in ADAMS software,and the vibration signals under different gear states were simulated.Then,considering the actual situation of the gearbox and the operability of the measuring points,these points were preselected and characteristic parameters of signals were calculated.Finally,the high-dimensional feature matrix formed by the characteristic parameters is reduced by locally linear embedding,and the sensitivity of measuring points in different states is obtained to determine the optimal measuring points.The results show that four measuring points have high sensitivity under the sun gear broken teeth,planetary gear broken teeth and normal conditions,which can effectively collect vibration signals to reflect the gear state and lay good foundation for actual test.

关 键 词：虚拟仿真 局部线性嵌入 行星变速箱 振动测点优化 

分 类 号：TP391.9[自动化与计算机技术—计算机应用技术] TH13[自动化与计算机技术—计算机科学与技术]