Nimble production environment leaves the control research of production unit

In This Paper, the Organization And Characters Of Agilemanufacturing Cell Are Studied.

A Module Is Designed For Building Manufacturing Cellbased On Intelligent And Object-oriented Technique.

A New Cell Control Model Isdeveloped At Last.

Keywords:AThe 21 centuries that shortly of foreword of Intelligent Agent Objet-oriented1 of 　 of Manufacturing Cell of Gile Manufacturing 　 will come, those who be placed before all production enterprises will be more intense compete with unpredicatable market, the enterprise wants can remain invincible, must have the capacity that holds good luck and ceaseless innovation, can the product that with faster response speed and production of ability of meet an emergency give the market to need, be made adroitly even if can help an enterprise realize the advanced production idea of this one purpose. The basic mind that makes adroitly adopts dynamic and allied method namely, have the aid of at network of news news report, build what can make the open sex that answers quickly to market demand to make a system. Implementation creates need adroitly to the enterprise organization, each side that move and runs undertakes changing [1] , the main feature that its organize a structure to change is to establish dynamic and allied mechanism, through combining the advantage resource of different company, the production that forms whole to optimize makes a system. Make adroitly do not go after single company to have complete advanced production facility and technology, amass the dominant position of different company however, for specific production the task establishs production unit, the task is finished, unit disintegrate. Accordingly, the production that has nimble character is unit, or call nimble production unit, also be the open sex system that forms by dynamic and allied mechanism, the resource that forms production unit and equipment do not accept the restriction of enterprise and district, the advantage in the system is complementary, the interest is shared. The production that is based on composition of place of this kind of thought is unit, move and control means to also happen necessarily change. The composition that the article aims to create unit adroitly through research, move and control character, seek means of science of pilot of nimble production unit, optimize in order to realize combination of nimble production unit and pilot. The structural characteristic 　 of 2 nimble production unit (the basic composition form that 1) creates unit adroitly makes unit if the graph is shown 1 times,comprise a form basically adroitly. It includes the treatment system in traditional production system (treatment facilities and auxiliary equipment) , content sheds a system (carry, store and assemble and unassemble equipment) with control system (plan, attemper, the) such as process control, but differ with traditional production system, relatively independent ground is in these resource dispersedly in different district and different company, and because produce,be the task appears and combine, as the task finish and disintegrate. The production resource that distributing is passed (Internet) photograph interconnection is, resource controller controls what what belong to resource to run directly, assure the manufacturing job that inside formulary deadline the place that finish assumes. All resource controller are undertaken coordinate and be controllinged by the unit controller of nimble production unit. Graph the enterprise that controller of basic structure unit belongs to 1 nimble production unit to realize market opportunity the earliest or the business that carry those who negotiate generation to master main technique, this enterprise has production facility of the part, can do not have any production equipment even. The function of unit controller includes to make unit combination, cooperative control and unit disintegrate, it is the core that creates unit adroitly. Each distributing resource acts as agent through intelligence (say to act as agent again) establish link, it is the interface of enterprise and Internet. The representative is the has certain intelligence software that has autonomic sex and dynamic role, can realize the general job that network news report gives with finishing an user, because of,also can assume people all sorts of reasons (if speed passes slow, many repeat etc) and the work that completes hard [2] . The representative has certain intelligence, in the environment that it can decide in a blame execute the mission automatically, and be on consideration self interest and general and regular foundation undertake decision-making analysis. The applied range of acting technology is quite wide, here we emphasize two functions of the representative only: Search representative and information representative. Search representative is in charge of sending search message to other representative, the search request that information representative is in charge of answering other to act as agent and undertake information is exchanged. (The major attribute show that 2) makes unit characteristic and nimble production unit adroitly is the open sex in the system, flexible with hale sex. Nimble production unit is open and not be the system that close, the production resource that forms production unit does not have the limitation of district and enterprise, the owner of production resource people act on the principle that gains profit jointly, have the aid of is united in wedlock at Internet together, pass effective compositive the whole that forms to unite. Open what the gender also makes make resource to distributing to become the most typical feature with different compose however, make information compositive thereby become nimble production unit whether the key that moves effectively. Compositive requirement realizes information effectively to make resource and this locality remotely make resource confluence, make control a system to be able to have unified, harmonious control, assure production process optimize, also want to maintain the opposite independence of information at the same time, when unit disintegrate, information can be decomposed effectively. Make adroitly can make acute report to vicissitude of the market, fast and the product of demand of market of production of high quality ground, its premise is production unit can around the product trends recombines. Recombine through trends, make nimble production unit is had very tall flexible, from theoretic tell, it can produce an any products almost. But as a result of production unit flexible it is nimble of production unit recombine for the foundation, because this must be used modular method or object-oriented technology build systematic model, write control software, between the sex of put sb in a very important position that pays attention to all sorts of models and software and them recombine ability. Although comprise the resource of nimble production unit to distributing,be in different district, but with groovy production the department consolidates model, want to be able to undertake attemper effectively and be controllinged to its. Hale sex body is had in control system now can support those who cross region is large-scale the ability that works in coordination. In the meantime, as a result of resource compositive do not mean nimble production unit to be able to take up the overall productivity of a compositive resource, because this controls a system to want to be able to producing environment, production,the circumstance of the change such as condition and resource falls, adopt be coordinated effectively and meet an emergency is politic, assure a system optimize move. 3 nimble production unit control nimble production unit to be located in the ground floor of nimble production system, it organizes an affirmatory manufacturing task to undertake assorted according to superstratum, main function includes pilot of nimble production unit production unit is established, optimize unitly decision-making run control with production unit. (1) creates unit adroitly establish nimble production unit to if the graph is shown 2 times,establish technological process. Unit controller of the system is searched through Internet above all and seek a partner, match Qi Sheng to produce a manufacturing production resource. By the graph 1 know, intelligent representative is the interface of enterprise and network, through intelligent representative the resource that finish is searched and receive. The resource content that the applicant that any users on the network can regard a search as searchs need gives intelligence acts as agent, change into appropriate information to inquire request format by its, be released on the net or direct transmit reachs relevant industry. When intelligence the representative receives information when inquiry requests, database of activation this locality undertakes inquiring, return inquiry result and pertinent information the representative that sends a request. Graph the resource information that 2 nimble production unit establish flow to will obtain a lot of according with to ask through network search, need undertakes assessment, choose best co-worker. The filtration of production resource is finished through expert system. Cycle of charge of the productivity that expert system will offer according to co-worker place, treatment, production and transport costs undertake inducing arrange and be been opposite co-worker sort. Expert system has good interactive interface, the advantageous position that can alter different project, different resource and different company conveniently according to need is worth, the enterprise that makes have good cooperation to record is had taller notch. Dynamic alliance affirms the function that belongs to layer of the management in be being made adroitly, manage a superstratum that is located in production unit. The newspaper of preelection co-worker list that unit controller owns those who discharge good a type of local school in ancient times place to need resource sends management the layer, the person that by management the layer is the same as preelection undertakes dynamic alliance affirms, sign means of such as collaboration, resource to use the agreement such as limitation, profit allocation. Once co-worker is affirmatory, unit controller downloads pertinent resource information through intelligent representative, change into the format that agrees with photograph of information of this locality resource, wait for information of the corresponding semantics in long-range resource information, distributinging map at the same time stock a knowledge base. Trends of nimble production unit reframes characteristic, make systematic information compositive the task is very formidable. Use object-oriented technology to be able to raise the sex of put sb in a very important position of information and software, simplify unit control, it is more easy to make unit reframes. The object differentiates mode of object of resource information translate into, undertake classified by resource object, treatment object and process drive object. Resource object includes to machine equipment, auxiliary equipment to wait like machine tool, cutting tool, clamping apparatus and relevant attribute is like process capability, use condition, use charge to wait, machining an object is the abstract description to machining the task, include turning, milling to wait and dimension of treatment spare parts, material and man-hour; The operation change rule that process drive object mirrors systematic condition to change and causes, if machine the task to finish, treatment task cancels, machine tool breakdown, reflect a system to change to need contented condition and control rule to another incident from an incident. Object analysis is to find out the general character between different object and correlation, have the analysis of object consistency and definition, eliminate conflict and redundant, raise an object to enclose agglomeration to spend [3] . The system undertakes enclosing to making resource, make sex of mutual depend on sb or sth for existence is achieved between the object the smallest, assure the independent character of the object. The object is enclosed can provide more concise information for systematic control already, when make production resource is changed again and undertaking modification to method of object structure and operation implementation, need not undertake too big modification to controlling software. After narrating each task to finish afore, can establish the link of distributinging resource, the work out controls software unitly, establish nimble production unit. (The control structure that 2) creates unit control structure to create unit adroitly adroitly is shown 3 times like the graph, the transverse connection between distributinging resource controller was turned infirmly here (unit to be being made adroitly normal movement process, should assuming is correct) , differentiate nimble production unit to be given for a three-layer rank control structure. Main function includes unit controller: Graph the productivity that 3 nimble production unit control structural 　 ① to decide unit, identify distributinging resource complementary sex and can replace a gender. Complementary resource finishs regular job severally, with other cannot replace each other between resource, the angle that be inputted from the system and outputs looks, it is series connection link, machine tool utilization rate is high, but dependability and flexible reduce; Can replace resource to express to be able to be replaced by other resource, belong to shunt-wound link, the system is flexible increase, but productivity is inferior. Normally this two sort resource consist in system is medium at the same time [4] . ② makes manufacturing plan, to distributing each resource assigns manufacturing task reasonably. The delivery time that sets a product is TL, the task asks the upper limit of the time that finish is TS, flabby time is TF, have: TL=max(Tpi ＋ Tti) among them I=1, ... , n distributings on behalf of each resource, tpi is manufacturing time, include from the time that accepts the task to prepare time and manufacturing place to need to what begin production; The spare parts that Tti is distributinging resource to will been produced carries the time that needs to delivery spot place. Be like TF=TS - TL is negative worth, state the task cannot finish on time, need undertakes adjustment. Resource controller is the 2nd when control a construction, main control function includes: A.

For place administer resource is made optimize attemper, attemper the method can be used in flexible the applies extensively such as in production system optimizes system of algorithmic, expert, nerve network and genetic algorithm; B.

Produce the real time control of the process; C.

Collect the dynamic data in producing a course in time, time report gives unit controller. The three-layer that controls a construction makes the controller composition that sorts equipment with content by each, use at controlling equipment to complete all sorts of operations correctly, feedback facility status information in time resource controller. (3) makes unit moving control create unit distributed structure adroitly adroitly, make unit control system also is structure of a kind of dispersive control. Optimize for what better implementation creates unit adroitly decision-making with control, build the fictitious model of nimble production unit. Fictitious production unit is reality production unit the map in fictitious environment, it is comprised by fictitious information system and fictitious physics system, part system of corresponding and real information and actual physics system, its abstraction model and true substance are one to one correspondence, have as same as true substance function, behavior and function. The target information model that when using object-oriented technology to establish nimble production unit, uses can apply at building fictitious production unit directly. The district concept of fictitious production unit disappears, can use what all sorts of existing advanced techniques implement a system to optimize decision-making with control. Can use fictitious production unit to undertake emulation moving at the same time, examine to plan and attemper strategy is optimum, to the system moving result undertakes assessment. Graph 4 nimble production unit produce a process to control a structure to be in unit in running a course actually, distributinging resource controller undertakes optimizing attempering to what belonging to resource, condition of the manufacturing data that will concern, system and progress collect arrive unit controller. As a result of distributinging resource controller administer resource still may belong to another to create unit adroitly, controller need unites resource to attemper and be controlled, but must classify the treatment information that attributes different production unit collect. Unit controller passes all combination that return information to understand a system to run complete picture. When should discovering some distributinging resource fails to have production according to plan, undertake negotiation through the network, whether to need to adjust manufacturing plan or reapportion production task certainly. If the graph is shown 4 times,the production that makes unit controller adroitly controls functional construction, its body is knowledge base, database and intelligence decision-making system. The knowledge base deposits unit and decision-making knowledge, wait like criterion of inferential regulation, judge. Administrative levels of the knowledge in the knowledge base includes the domain layer such as connection is knowledge, decision-making between concept, fact, condition spark control, trends attempers the control layer knowledge such as control and system optimize judge of differentiate of target, selected resource, moving result to wait for program layer knowledge. The distributinging resource information that the database includes to produce systematic condition and data, active production data and compositive system basically and manufacturing plan and task allocation circumstance. Among them systematic condition and the manufacturing progress that active production data reflected a system, originate the feedback information in producing a course. Intelligence is decision-making it is unit control core, its are final the purpose is to be below the premise that finishs manufacturing task on time, make make unit control reach overall situation best. Decision-making module includes intelligence to condition identifies and optimize control two parts, former it is the basis produces state information derivation active system condition, undertake be comparatived with booked production, if produce occurrence incur loss through delay, activation optimize control module. When manufacturing incur loss through delay appears in production process, decision-making system checks intelligence to whether have above all can replace resource to be singled out centrally replace resource appropriately, will be turned to replace resource processing by the manufacturing task of incur loss through delay. If did not replace resource, start resource to search a function, search new partner to finish by the job of incur loss through delay. 4 last words make unit control adroitly is one of vital technologies that implementation makes adroitly. How be opposite cross region, by distributing to make unit what production resource comprises undertake be mixinged effectively optimizing controlling adroitly, it is the new task that we face. The article passes structural characteristic, unit to creating unit adroitly character to undertake an analysis, put forward to nimble production unit is established and control structure and method, offerred new approach to make unit control adroitly. Nimble production unit is controlled is foreground the research of sex of capacious, rich challenge works, we had stridden important one step, but still a lot of difficult problem need farther thrash out, ability implements the control means that we offer and technology. CNC Milling CNC Machining