论文部分内容阅读
为了刀板切削过程中的受力满足最合理的设计准则,专用传感器设计须基于固定总体结构,对局部结构优化,以达到设计合理的目的。刀板切削时受到土体的阻力可分解为水平力和垂直力,多维力传感器测量了两个力的大小和对传感器产生的弯矩。刀板工作中,弯矩引起的正应力比垂直力引起的拉应力及水平力引起的切应力要大得多,因此特别设计了弹性体的局部结构使得三个应力值接近于同一量级。传感器的标定结果显示,输入输出有良好的线性关系,并且很好地消除了耦合效果。最终,将该传感器应用于土体切削测试并验证了其可靠性。
In order to meet the most reasonable design criteria for the cutting force during blade cutting, the special sensor design must be based on the fixed overall structure and the partial structure to be optimized so as to achieve the purpose of reasonable design. Cutting blade by soil resistance can be decomposed into horizontal force and vertical force, multi-dimensional force sensors measure the size of the two forces and the sensor of the bending moment. In the blade work, the normal stress caused by bending moment is much larger than the tensile stress due to vertical force and the shear stress caused by horizontal force. Therefore, the local structure of the elastomer is specially designed so that the three stress values are close to the same magnitude. Calibration results of the sensor show that the input and output have a good linear relationship, and well eliminate the coupling effect. Finally, the sensor was applied to the soil cutting test and verified its reliability.