Research On The Key Technology Of Facility Layout For Agile Workshop Based On Axiomatic Design

Personalized products and increasing global competition require manufacturing systems with moreagility. In view of the important position of agile manufacturing workshop for production, whetherworkshop planning technology is advanced or not directly impacts on the production cycle andmanufacturing cost. Nevertheless, the present workshop planning technology based on experience orlocal optimization technology is difficult to meet the needs of the modern workshop planning. As theimportance of plant planning technology in the manufacturing firms and the actual needs of agilemanufacturing plant, the planning technology for agile manufacturing workshop based on the axiomaticdesign is presented. In this paper, the agile workshop planning theoretical framework based on theaxiomatic design is built and the agile workshop layout optimization techniques, multi-attributedecision-making based on axiomatic design, the development of agile manufacturing workshopplanning plantform and rapid modeling techniques are studied in detail.As the facilities planning techniques has important influence on the production operation, in thepaper The research situation of facility planning is analyzed and the research deficiencies and futuredevelopment direction are pointed out. Based on the above analysis, the concept of agile workshopplanning technique based on axiomatic design is proposed. The proposed technique introduce theadvanced design theory to the workshop planning area and overcome the shortcomings of present plantplanning methods which base on experience and lack the guide of systematic theory. The proposedtechnique will have an important impact on the workshop planning research.The agile manufacturing workshop planning hierarchical model based on axiomatic design andmapping model between levels are established. The workshop planning process is divided intoworkshop level, unit level and workstation level to achieve the top-down planning and taskdecomposition level by level. The overall framework of agile workshop planning based on axiomaticdesign is established. In the framework, the planning organization process and the design process arepropelled in parallel, the poor communication between the design groups and design iterations arereduced which are caused by improper tasks distribution and the layout reliability and the designefficiency are improved. Aiming at agile manufacturing workshop planning problem, the multi-spacemapping model of agile workshop planning based on axiomatic design is established. In the model, theinteraction between the spaces in the workshop planning process are analyzed, the mapping betweenfacilities group, task group and design group are established. Using the model, coordination between thedesign team is smooth and the wastes of time caused by task iterations between the design groups areeffectively reduced.Through the analysis to the plant layout planning process with independent axiom, the couplingproblem in the traditional layout optimization process is found. By coupling analysis, themulti-objective integrated layout optimization process for the agile workshop is presented. The cellformation, equipment selection, logistics network construction, input/output stations position andoperational performance about agile workshop are analyzed respect. The multi-bay layout problem withthe vertical fixed-channel has been studied and its multi-objective mathematical model is established.Under the guidance of the new integrated multi-objective layout optimization process, the optimizedlayout is more reliable and better able to meet the requirements of agile manufacturing workshop.The relations issues of multi-attribute decision-making are analyzed, multi-attribute decision-making method based on axiomatic design theory are proposed. In this theory, the hierarchicalcriteria system analysis model based on the independent axiom is constructed, which takes into accountof the impact of the relationship between criteria and reduces the objective conflicts in thedecision-making process by the greatest extent. In order to reflect the degree of fulfillment of thedecision maker's requirements, the computation method of information content is improved. Theimproved formula synthetically embodies decision-maker's satisfaction degree and the system ability,which better suites to solving multi-attribute decision making problems. The proposed multi-attributedecision-making model based on axiomatic design provides a new idea for the repeateddecision-making process.In order to support the study of agile layout theory based on axiomatic design, the layout softwareplatform based on axiomatic design for the agile manufacturing workshop is developed and rapidreverse engineering method based on sand table model of workshop layout is presented. In order totransform the workshop layout digital model into the simulation model, Hierarchical Object-orientedTimed Colored Petri Net (HOTCPN) model of manufacturing system is established and thecorresponding auto-conversion software is developed. Using the software, the control logic ofmanufacturing workshop HOTCPN model is automatically translated into the control logic of eM-Plantsimulation model, which achieves the rapidly modeling of the workshop simulation. The layout softwareplatform provides a convenient tool for agile workshop planning techniques based on axiomatic designto be applied in the real engineering and enhance the technical availability.Finally, the facility layout techniques of agile workshop based on axiomatic design are used todesign the welding workshop layout. The engineering application initially verifies the feasibility andeffectiveness of the proposed facility layout techniques for the agile workshop based on axiomaticdesign.