Development of a Design Tool for Roll-Over Prevention of Tractor-Tandem-Disc System

目标：多功能，布勒工业公司的一个部门。是加拿大唯一的农业拖拉机制造商。它还生产其他农业机械，如联合收割机，精密播种和耕作装置等。Versatile目前正在考虑将滚篮和耙引入其Tandem圆盘（三种耕作装置之一）。这种修改可能会导致拖拉机串联圆盘系统的不稳定性增加。为了弥补这一缺陷，在机器制造完成后，在机架的不同位置添加配重，这既耗时又会减慢产品开发速度。此外，由于大量的机器配置，很难跟踪所有单个配置的稳定性状态。本项目的目标是开发交互式计算机软件，在设计阶段预测各种机器配置的拖拉机串联圆盘系统的稳定性，而不是在机器建成后添加配重。 方法学：Versatile已使用基于重心相对于车辆支撑多边形的位置的常规稳定性测量来监测拖拉机串联圆盘系统的稳定性。将使用更先进的力-角稳定性测量来包括重心高度的影响。实验将进行验证所开发的算法。将开发高度交互的计算机软件，以跟踪和揭示拖拉机串联圆盘系统在各种配置和操作条件下的稳定性。 重要性：农业对加拿大经济至关重要。在这个竞争激烈的市场中保持竞争优势至关重要。在设计阶段提供拟议的计算机软件使Versatile能够加速产品开发并提高操作安全性。

Objectives: Versatile, a division of Buhler Industries Inc. is the only Canadian manufacturer of agricultural tractors. It also manufactures other agriculture machinery, such as combines, devices for precision seeding and for tillage, etc. Versatile is currently considering the introduction of rolling baskets and harrows to their Tandem disc (one of the three devices for tillage). This modification may lead to increased instability of the Tractor-Tandem-Disc system. To compensate, counterweights are added to the frame at various locations after the machine is built, which is time consuming and slows down product development. Furthermore, due to a large amount of machine configurations, it is difficult to track the stability status for all individual configurations. The objective of this project is to develop interactive computer software to predict the stability of the Tractor-Tandem-Disc system for various machine configurations at the design stage instead of adding counterweights after the machine is built. Methodology: The conventional stability measure based on the location of the center of gravity with respect to the vehicle support polygon has been used by Versatile for monitoring the Tractor-Tandem-Disc System stability. A more advanced Force-Angle stability measure will be used to include the effects of the height of the center of gravity. Experiments will be performed to validate the developed algorithm. Highly interactive computer software will be developed to track and reveal the Tractor-Tandem-Disc System stability in various configurations and operation conditions. Significance: Agriculture is vital to Canadian economy. It is crucial to maintain a competitive edge in this highly competitive market. The availability of the proposed computer software at the design stage enables Versatile to accelerate product development and improve operational safety.