卵形体农产品大小头自动定向翻转运动仿真模型建立与试验验证

Establishment and experimental verification of simulation model on turnover motion of ovoid agricultural products

为了深入探讨卵形体农产品大小头自动定向中翻转运动规律的影响因素和动力学特性,降低实际试验成本,设计了由卵形体、输送辊、导向杆组成的数字化虚拟样机(仿真模型),并运用ADAMS运动仿真技术对卵形体翻转运动过程进行了仿真,创建了翻滚距离和导向杆作用距离仿真值的测量方法;在此基础上,对不同长轴L、短轴B、蛋形角θ和输送辊中心距E、导向杆弯曲角度γ、输送速度v条件下仿真值和实际试验值进行比较分析。结果表明,仿真结果与实测结果呈现相同的变化规律,相对误差均在10%以内,所建的仿真模型是可信和有效的,利用该模型研究翻转运动规律是可行的。

In order to further explore the influential factors and dynamic characteristics of turnover motion in the automatic orientation of pointed end and blunt end of the ovoid agricultural products,to reduce actual test costs,a digital virtual prototype(simulation model)consisting of ovoid products,conveying roller and guide rod is designed and built.Using the ADAMS simulation technology,the process of the ovoid body,turnover motion is simulated,and a measurement method for the rolling distance and effect distance of guide rod in the simulation experiment is created.On this basis,the simulation values and actual test values under different long axis L,short axis B,egg-shaped angleθ,center distance E of the conveying roller,bending angleγof the guide rod,and conveying speed v are compared and ana-lyzed.The results show that the actual results and the simulation results have the same variation discipline,and the relative error is within 10%.The established simulation model is credible and efficacious,using this model to study the discipline of turnover motion is feasible.It lays the foundation for the research of the oval body agricultural products turnover motion simulation.