Power Requirement and Vibration Characteristics of Rubber Crawler Vehicle for Farm Machinery and Determination of Optimum Design Parameters

农机用橡胶履带车的功率需求、振动特性及最佳设计参数的确定

基本信息

批准号：
11460119
负责人：
INOUE Eiji
金额：
$ 6.21万
依托单位：
KYUSHU UNIVERSITY
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (B)
财政年份：
1999
资助国家：
日本
起止时间：
1999 至 2001
项目状态：
已结题

项目摘要

In former study, dynamic model of the rubber crawler system running on the solid horizontal surface, was constructed by the Voigt model composed of the dynamic spring constant, k, and viscous damping coefficient C which were expressed as Fourier series. Further, the simulation of the vibration characteristics could be performed through the motion equations based on the dynamic model.In order to simulate precisely, dynamic parameters k and C were identified by the Gauss-Newton Method which is one of the method of non-linear least squares. As a result, k and C could be identified about only two coefficients of harmonics under the condition of separately identification. Therefore, Leven Berg-Marquartd method which is available for identification of so many parameters and errors of the first stage, was applied as a new identification method. As a result, Ten coefficients of Fourier series concerning to dynamic parameters k and C could be identified under the condition of at the same time identification.Next, Analytical simulation of the travel resistance was performed by using experimental results and static equilibrium equations constructed by the mechanical model of the rubber crawler system. As a result, it was found that this simulation method was applicable to predict travel resistance by the rolling resistance of the track rollers. Further, the rolling resistance for each track roller arrangement could be estimated quantitatively.

在以前的研究中，通过固体水平表面上运行的橡胶轨道系统的动态模型是由由动态弹簧常数，K和粘性阻尼系数C组成的VOIGT模型构建的，该模型以傅立叶级数表示。此外，可以通过动态模型的运动方程进行振动特征的仿真。在精确模拟中，通过Gauss-Newton方法鉴定了动态参数K和C，这是非线性方法之一最小二乘。结果，在单独识别的条件下，只能鉴定出K和C的两个谐波系数。因此，将Leven Berg-Marquartd方法用于识别这么多参数和第一阶段的错误，被用作新的识别方法。结果，可以在同时识别的条件下确定有关动态参数k和c的十个傅里叶序列系数。接下来，通过使用实验结果和由由由实验结果和由由静态平衡方程进行的分析模拟，由由静态均衡进行。橡胶轨道系统的机械模型。结果，发现这种仿真方法适用于通过轨道辊的滚动电阻来预测旅行阻力。此外，可以定量估算每个轨道辊排列的滚动电阻。