Analysis Of Virtual Disassembly Process Of Marine Equipment And Research On Sequence Planning

The dismantling of ship's power equipment is one of the seafarer crew's three-tube wheel qualification examination and evaluation project,and is also one of the important contents of practical teaching in marine engineering.Ships have many mechanical equipments,and the method of using actual equipment for student disassembly training has the disadvantages of time-consuming and high cost,so the virtual disassembly technology has been widely used in recent years.This article uses the auxiliary disassembly system established by the computer programming environment to dynamically analyze the disassembly process of the parts in the virtual disassembly and optimize the disassembly sequence of the parts.It plays a good auxiliary role in the disassembly teaching of ship power equipment.First,study the elemental representation method of part features,establish the mathematical formula of the matching relationship,and take the marine gear pump as an example to show the expression of the matching relationship of the parts of the gear pump.By analyzing the characteristic elements of the parts,the parts with matching relationships in the equipment are expressed using hierarchical information,and the relationship between the marine gear pump parts is expressed in the form of a table,for the analysis of the dynamic disassembly process of equipment parts establish foundation.Secondly,on the basis of the expression of the matching relationship of parts,the dynamic disassembly process of marine gear pump is analyzed based on Petri net,and the disassembly sequence of gear pump parts is solved on the basis of Petri net.Analyze what other parts the current detachable parts will be restricted by,and establish the disassembly interference matrix of the parts.According to the matching expressions of the characteristic elements of the parts,the release of the cooperation relationship when the parts are disassembled is expressed.On the premise of the cancellation of the interference matrix and the matching relationship of parts,the Petri net is used to analyze the dynamic disassembly process of the parts of the marine gear pump.Then,based on the analysis of the dynamic disassembly process of the parts,the dissertation transforms the disassembly sequence planning problem into the disassembly path optimization problem.Analyze the defi ciencies of the basic ant colony algorithm in sequence solving,improve the ant colony algorithm's way of selecting parts and update the pheromone,and establish a brand new part disassembly evaluation function,using the improved ant colony algorithm Disassembly sequence for analysis.Through calculation to verify the rationality and feasibility of the algorithm.The experimental analysis of the marine gear pump is carried out,and then the reasonable values of the parameters in the algorithm are analyzed in turn,and finally the optimal algorithm parameter combination is summarized.Finally,an auxiliary system for disassembly of marine gear pump parts was designed and implemented through the Java programming environment,and Matlab was used to analyze the algorithm for solving the disassembly sequence of gear pump parts.By adding parts controls and parts pictures on the interface to describe the parts disassembly process of the marine gear pump,using Java to call the GUI interface written by Matlab for digital analysis of the device disassembly sequence,the calculation process of the algorithm and the parameter analysis process are presented in the form of interface.The research shows that the established simulation disassembly system can better analyze and express the disassembly process of equipment parts,and solve a better part disassembly sequence through an improved ant colony algorithm.And the developed parts disassembly auxiliary system can help trainers to learn the parts disassembly process of ship equipment better and faster.