摘要
为了获取轨道扭曲不平顺几何信息,根据扭曲不平顺变化特征及轨道扭曲不平顺模拟器结构,建立了轨道不平顺模拟器双六自由度模拟平台位姿反解模型和位姿关联模型.借助Simulink位姿反解模型对国内常用轨距与转向架常用轴距对应的3种扭曲不平顺位姿反解进行解算,解算结果与位姿正解具有很好的一致性,验证了所建位姿反解模型、位姿协调关联模型的正确性.以某型转向架为例,利用试验台进行了不同基长的扭曲不平顺室内试验,研究了扭曲不平顺基长对轮重减载率的影响.试验结果表明,扭曲不平顺基长越小,轮重减载率越大,基长2.4、5.0 m的最大轮重减载率分别为0.594和0.581,满足国家标准规定的安全限值.
In order to obtain the geometry information of track torsion irregularity, an inverse kinematics model and a pose correlation model for the double 6-degree-of-freedom （DOF） platform of a track torsion irregularity simulator were established, taking into account the characteristics of torsional irregularity and the structure of the track torsional irregularity simulator. By means of Simulink inverse kinematics model, the inverse kinematics solutions for three types of torsion irregularity of domestic commonly used gauges and wheelbases of bogies were calculated. The results have a good consistency with the forward kinematics solutions, which verifies the correctness of the established inverse kinematics model and pose correlation model. In addition, taking a certain type of bogie as an example, laboratory tests were carried out using torsion irregularity of different basic lengths to study the effect of the basic length on the wheel loading reduction rate. The results show that the smaller the basic length of torsion irregularity is, the larger the wheel loading reduction rate will be. The maximum wheel loading reduction rate for 2.4 m and 5.0 m basic lengths are 0. 594 and 0.581, respectively,both within the safety limit of relevant national standards.
出处
《西南交通大学学报》
EI
CSCD
北大核心
2014年第6期1002-1009,共8页
Journal of Southwest Jiaotong University
基金
中国博士后科学基金资助项目(2011M500603)
中国博士后科学基金特别资助项目(2012T50275)
吉林省科技厅重点项目(20080356)
教育部博士学科点专项科研基金(20120061110033)
关键词
轨道不平顺模拟器
位姿反解
扭曲不平顺
协调关系模型
track torsion irregularity simulator
inverse kinematics
torsion irregularity
correlation model
