Research On Automatic Leveling Control System Of Paddy Field Compounding Machine

With the adjustment of planting structure in heilongjiang province,expanding paddy field acreage,for increasing the number of paddy soil preparation machine requirements,also more and more high to the accuracy requirement of the ground.The heilongjiang province paddy soil preparation machine is still in the traditional mixed pulp machine,rotary cultivator,rake,etc.,there is no automatic leveling control system,the operation simple,relying on the pilot experience,low degree of automation,low control precision,the pilot work intensity.Tractor in farmland homework,because of the pit of farmland cinnamon or slope,caused tilt walking tractor,farmland soil preparation machine and tractor towed or hanging is adopted to improve the cohesion,so the soil preparation machine in during operations,also can tilt with the tilt of the tractor,eventually led to the operation effect is not ideal.The tractor hanging frame is still in the stage of manual mechanical leveling,manual mechanical leveling time-consuming,laborious and can’t be real time leveling,with our country agricultural machinery development in the direction of the automatic and intelligent.So the leveling system study of paddy soil preparation machine to realize the land leveling,improving the quality of the plow land preparation,promote the agricultural development has important practical significance,in the construction of farmland and land development and consolidation has broad application prospectsIn this paper,combining with lh-zd-5.0 type paddy soil preparation machine double entry structure characteristics and working principle of the automatic leveling control system,hydraulic system design,and the original hydraulic selection;According to the requirements of the hydraulic system control,choose MCU STC12C5A60S2 type to the operation of the control system of the core,using KeiluVision write MCU program of software,and design of the controller signal acquisition circuit,amplifying circuit;Write a paddy field using Vb6.0 by use compound soil preparation machine real-time display software.Using AMEsim software for automatic leveling control system modeling,simulation analysis: the automatic leveling control system has two working pressure and rodless chamber inlet pressure of 50 bar,rod chamber inlet pressure of 70 bar;Unloading relief valve pressure of200 bar;The piston rod movement all the time is 11 s.Through laboratory bench test: automaticleveling control system control precision is 0.3°.Plot data collected through field operation test:test of standard deviation mmSd(28)58.12.Based on the AMEsim software for automatic leveling control system modeling and simulation,verified the feasibility of the automatic leveling control system in theory,to ensure the safety of the automatic leveling control test prototype,stability;Through bench test and field test design of paddy field compound soil preparation machine automatic leveling control system,low cost,high work precision,high automatic degree,man-machine interactive strong,stable performance,high working efficiency,and greatly reduce the production cost and Labour intensity.