Control Design Of AGV Car System In CNC Workshop

AGV is an intelligent and highly flexible handling system,which has the advantages of occupying unstable ground space,high flexibility,safety and reliability,work maneuverability,convenient assembly and convenient maintenance,and is generally used in automobile production,mechanical engineering enterprises,logistics Industry and other material transportation places.At the same time,as the main transportation equipment in the automated production line,AGV's design and manufacturing applications have irreplaceable significance for improving production automation and improving production efficiency and are the research focus in the field of automation.At present,AGV is still widely used,but there are certain problems.The main issues are: perception of complex environments,how to locate in complex environments,and control of AGV operation.Faced with these problems,corresponding measures were taken.First of all,the perception of the complex environment.Because the CNC workshop designed by the AGV used in this paper is an indoor environment,it can be based on lidar and combined with other sensors to autonomously sense the CNC workshop environment.Secondly,in the complex environment,the traditional method is GPS global positioning.However,in the indoor environment of the CNC workshop,the GPS will have weak signals,which will lead to the failure of position positioning.,Through the construction of model maps and real-time observation of environmental characteristics in actual movement to achieve their own location.Finally,path planning,combined with the specific characteristics and needs of the designed AGV,using the ROS system framework,focused on the design and development of the key content of AGV path planning and motion navigation.This article also focuses on the design of the AGV transportation system in the production line of the CNC workshop,focusing on the overall structure of the AGV,the way of navigation,on-board communications and real-time positioning and navigation technology of the radar.Aiming at the communication problem between the AGV vehicle system and the control terminal,the Zig Bee communication method is proposed to designits network structure and system work flow.The SLAM research is carried out based on the ROS system,mainly through the use of sensor technology to complete the construction and navigation of the environment map.During AGV automatic navigation,global or local planning is used for path planning according to the integrity of environmental information.Different planning uses different algorithms.Finally,combined with the construction of the AGV hardware platform and the corresponding experiments,it completed the operation in the real situation and realized the construction and navigation function of the environmental map.The experiment confirmed that the AGV of the CNC workshop used lidar for real-time positioning and navigation technology with accuracy and practicality.To achieve its intended function.