Abstract
In order to solve the motion collision of potato harvester elevator, ADAMS and MATLAB are integrated and used to perform their dynamic simulation. Simulation methods for mechanical systems and control systems integration based on ADAMS/MATLAB are applied, the dynamic properties of the entire system is analyzed, as a result, Virtual prototype technology is used to the simulation analysis and the pre-description of the motion collisions of a two-freedom mechanism for potato harvester elevator and the feasible solution for its motion control is set up. Based on the system motion analysis, the elevator positioning control algorithm is proposed and the dynamic properties of the mechanical system and the control system are matched up.
Highlights
The potato harvester equipped with elevator can dig, transfer and collect potatoes at one operation pass during the work that can minimize tuber damage and reduce labor force and increase production efficiency
4 SW-40 style and 4SW-130-150 style potato harvester designed by Inner Mongolia Agricultural University (Zhao et al, 2000; Yan, 2001; Zhao et al, 2007; Yang, 2009), CPP-XH-150 potato digger manufactured by Modern Agricultural Equipment Technology Co., Ltd., 4U-1 potato combine harvester and 4UW-120 potato digger designed by Chinese Academy of Agricultural Mechanization Sciences (Zhou, 2004), a new potato combine harvester designed by Gansu Agricultural University (Song and Wang, 2009), 4KU-130/150A elevator chain harvester for tuber crops (Zhou, 2008)
If these two software are cooperated, that is, MATLAB used to the control system part and ADAMS to the mechanical part, a mechanical-electrical integration module could be built in which both software advantages are sufficiently utilized and the advantages of simulation test can be better presented (Wang and Zhang, 2005)
Summary
The potato harvester equipped with elevator can dig, transfer and collect potatoes at one operation pass during the work that can minimize tuber damage and reduce labor force and increase production efficiency. The harvester operator must adjust the elevator’s position frequently to keep a proper distance between the end of harvester elevator and potato pile to avoid tuber damage resulted from unreasonable distance between the end of harvester elevator and potato pile. A disc ce-grate type potato digger was designed, which performed smoothly in digging and transporting, the separation effect was efficient, but damage rate was 4.3% (Shi et al, 2012). These potato harvesters have not arm equipment and cannot transport the potato to loading trucks. Technol., 6(3): 389-394, 2014 is to simulate the machine motion and get the predescription position data, according to the algorithm to control the motion of the elevator, to solve the motion collision of potato harvester elevator
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