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为解决传统Tikhonov正则化解耦方法在载荷反求中获得的载荷误差较大的问题，引入改进的Tikhonov正则化方法。以某型铁路货车转向架侧架应变数据为例，假设两种应变误差情况(5%误差、10%误差),使用3种解耦方法(最小二乘法、Tikhonov正则化方法、改进的Tikhonov正则化方法)进行载荷反求，并将不同的解耦方法得到的反求载荷与实际施加载荷进行对比，结果表明，改进的Tikhonov正则化方法可以在应变数据存在误差的情况下保证可靠的反求精度，实现对载荷反求误差的有效控制，降低了传统解耦方法的计算时长，能更快速地获取反求载荷的数据，为铁路货车转向架侧架结构提供一种稳定的载荷反求方法。
Abstract：The reverse load calculation can accurately predict the load of the structure, which is an important method to ensure the safety of railway freight car operation on the actual road. However, due to the existence of Ill-posed problems and the interference of strain data errors, the decoupling method of traditional Tikhonov regularization obtains a large load error in the load inversion. To solve these problems, an improved Tikhonov regularization method is introduced. Taking the strain data of the side frame of a certain type of railway truck bogie as an example, assuming two strain errors(5% error and 10% error), three decoupling methods(least square method, Tikhonov regularization and improved Tikhonov regularization) are used to reverse the load, and the reverse load obtained by different decoupling methods is compared with the actual applied load. The results show that the improved Tikhonov regularization method can ensure reliable reverse accuracy when there are errors in strain data, realize effective control of load reverse error, reduce the calculation time of traditional decoupling methods, and obtain reverse load data more quickly, providing a stable reverse load method for the side frame structure of railway truck bogie.
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基本信息:
DOI：10.13291/j.cnki.djdxac.2026.03.007
中图分类号:U272
引用信息:
[1]李晓峰,白凯文,张岱霖,等.改进的正则化方法在载荷反求中的应用[J].大连交通大学学报,2026,47(03):63-69.DOI:10.13291/j.cnki.djdxac.2026.03.007.
基金信息:
吉林省自然科学基金资助项目(YDZJ202201ZYTS402)
2024-10-15
2024
2024-11-27
2024-12-06
2024
1
2026-06-09
2026-06-09
2026-06-09