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Study on Switches Organization of the Movement Direction about Digital Agricultural Experiment Platform

Author: ZhangZengLin
Tutor: LuBoYou
School: Northwest University of Science and Technology
Course: Mechanical Design and Theory
Keywords: Digital agriculture switching four-bar mechanism
CLC: TH112.1
Type: Master's thesis
Year: 2007
Downloads: 54
Quote: 0
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Abstract


This paper studys the movement direction swithing device of digital agriculture experimental platform which runs on both mutually-vertical tracks with different width.We designed and researched mechanical system,navigation system and automatic control system of the switching device.By the respective construction and comparision of mechanical system model,navigation system model and automatic control system model,we establish an optimized switching device on digital agricultural platform.We design various mechanical system models and automatic control system models.According to our study and analysis,we finally choose a better switching device model with independently-propelling electromotor and straight tooth cylinder gear.According as longitudinal wheel system rises and declines synchronously in process of switching, we work out four-bar longitudinal wheel system of plane rigidity.Depending on given parameters and through design,computation and choice,we obtain the data about rated power of used electromotor of switching device and specific parameters and mechanism sizes of driving system and shaft system.In cooperation of rocker movement and rise-and-fall scope,we also get the data about specific parameters and mechanism sizes of rocker and its parts.Utilizing the property of the movements of platform and rocker system,we design positioning peg automatic control system model of the rocker and employ PLC to realize emulation experiment of electromotor.This study successfully implements mutually-vertical movement automatic switching system on digital agricultural platform and will be an ideal hardware platform and further the study of digital agricultural experimental system.

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CLC: > Industrial Technology > Machinery and Instrument Industry > Mechanics (mechanical design of the basic theory ) > Of mechanism > Low pay linkage
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