应用高速摄像技术研究清选筛面上物料的运动  

Study the Motion Law of Material on Air-and-Screen by High-speed Video Camera

作　　者：张文斌[1] 李耀明[1] 徐立章[1] 董月亮[1] 

机构地区：[1]江苏大学江苏省现代农业装备与技术重点实验室,江苏镇江212013

出　　处：《农机化研究》2008年第5期21-24,共4页Journal of Agricultural Mechanization Research

基　　金：江苏省农业科技攻关项目(BE2005302)

摘　　要：建立了联合收割机风筛式清选装置中物料与简谐振动筛面的碰撞运动模型。同时,对物料周期运动的稳定性进行分析,得出了物料在筛面上的运动遵循定常运动和非线性运动规律。搭建高速摄像系统结合数字图像处理获取物料运动轨迹,通过分析发现物料确实存在非线性运动,为进一步研究物料透筛概率提供了理论和试验基础。Based on the analysis with actual working condition of air-and-screen cleaning mechanism in combine harvester, a vibro-impact motion model of material on harmonic vibration sieve was established and then derived the nonlinear interactive equation with Jacobi matrix to analysis the motion stability of material. During the total process of the motion the material follows both the stationary motion low and nonlinear motion law. Using high speed video camera with digital image processing method to acquire the motion track of material, the result shows that the material follows nonlinear motion on cleaning sieve.

关 键 词：风筛式清选装置 稳定性分析 高速摄像系统 数字图像处理 

分 类 号：S226.5[农业科学—农业机械化工程]