CN1912783A - Intelligent STEP-NC controller system and its complementing method - Google Patents
Intelligent STEP-NC controller system and its complementing method Download PDFInfo
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Abstract
An intelligent STEP-NC controller system us prepared as applying real time soft bus RTCORBA to carry out communication between various function agent modules at application layer, using high speed real time serial bus and core expansion of real time operation system to control high real time module in digital control system, providing information and data to application layer by data layer, operating application layer and data layer as well as operation system layer based on PC hardware platform being used to connect with various peripheral devices through bus interface card.
Description
Technical field
The invention belongs to the advanced manufacturing technology field, relate to technology such as STEP-NC, intelligent numerical control system and distributed artificial intelligence, particularly a kind of architecture and implementation method of the intelligent STEP-NC controller based on multi-Agent.
Background technology
The intellectuality of digital control system is the research focus of academia and industry member always, for example the research of all-round numerical control (Holonic Numerical Controller).But, because the restriction of traditional data interface has hindered the realization of intelligent numerical control system.Therefore, present research is mainly concentrated both ways: (1) utilization artificial intelligence technology is to the improvement of non real-time control performances such as the man-machine interface of digital control system, system diagnostics; (2) Comtemporary Control Theory method such as utilization adaptive control etc. is to the optimization and the adaptive control of process and relevant index.STEP-NC provides a kind of new data-interface standard, and its basic thought is product data to be exchanged STEP standard (ISO 10303) extend to the digital control processing field, sets up an information highway that runs through product design and manufacture process.STEP-NC replaces after traditional data-interface ISO 6983, and in fact the digital control processing stage becomes the most concentrated stage of manufacturing information, and digital control system is to have ready conditions most to fully understand the system of processing object, processing resource, condition and operation conditions own.If digital control system can be by planning and control the digital control processing process to product and the overall understanding of self, the intelligent and reliability of so whole process will improve greatly.Therefore, STEP-NC has widened the intellectuality of digital control system greatly.From the European Community in 1997 was since numerical control milling has defined first published STEP-NC data model by the OPTIMAL project, Europe, beautiful, day, priorities such as Korea Spro have started the STEP-NC project, EP 29708 (STEP-compliant data interface for numerical control) as the European Community, the SuperModel of the U.S. (Model Driven Intelligent Control of Manufacturing), the IMS-STEP-NC project (97006) of IMS (Intelligent Manufacturing System) tissue, the turning STEP-NC of Korea S etc.Take a broad view of in the world about the STEP-NC Research on Intelligent Controller, totally also be in the starting stage, present research mainly concentrates on the realization of data-interface.
For traditional numerical control, intelligent STEP-NC controller should possess following functional requirement: (1) real-time requirement.As a kind of machine tool control system, the most important task of STEP-NC controller remains the control lathe and processes, so must guarantee the real-time requirement of motion control; (2) STEP-NC interface capability.Is the most basic feature that the STEP-NC controller is different from traditional digital control system with STEP-NC (ISO 14649/ISO 10303-238) as data-interface, and system itself must possess the ability of conversion, processing and the information extraction of STEP-NC data.In addition, should also provide a three-dimensional picture interface or field programming system; (3) field program ability.Controller itself should possess basic numerical control processing technology planning ability, comprises the cutter rail generative capacity based on feature/work step, the optimization of cutting data, the determining etc. of lathe subsidiary function; (4) field simulation ability.Accurate in order to ensure process, system should possess simulation capacity, should be able to carry out emulation at work step, feature or whole processing tasks; (5) resource management capacity.Resource management refers to the management and the control ability of tool magazine, mechanical arm etc., and system only could make rational planning with regard to process under the situation of accurately understanding resource situation; (6) capacity of self-government.Capacity of self-government refers to that system to the making decisions on one's own and control ability of whole process, except that above-mentioned requirements, also should possess the processibility judgement, the processing power of fortuitous event, on-line measurement and self diagnostic capability; (7) collaboration capabilities.Main finger system and the external system of cooperating carried out abilities such as communication, information sharing, negotiation, cooperation, is the requirement that makes up the distributed networked manufacturing system; (8) based on the processing of knowledge.Ability in knowledge acquisition, self-adaptation, self-organization, self-learning capability etc.
According to the function of intelligent STEP-NC controller, be divided into following three types usually: autonomous type, autonomous cooperating and Almightiness type.Three types of in fact corresponding different functional hierarchies.Autonomous type can independently be selected job operation, but processing tasks not had right to choose mainly with the automatic planning of processing tasks be controlled to be target, can only accept (except when not possessing working ability).Autonomous cooperating is one type that had not only possessed capacity of self-government but also had collaboration capabilities.It does not have right to choose to processing tasks equally, but can hold consultation by the coordination mechanism and the external world, mainly comprises the cooperation, information sharing of Physical layer and to negotiation of processing tasks or scheme etc.Almightiness type is network-oriented manufacturing environment and a type of proposing.Itself both can be selected job operation as one in the network manufacturing environment autonomous intelligent body, and the while also can be assessed, negotiate and be determined whether accept this task processing tasks.In addition, present STEP-NC data model does not have clear and definite division for the function between CAM and the numerical control, has certain function overlapping between the two.In fact, STEP-NC realizes that the planning of external system is unnecessary under many circumstances after the intellectuality.Therefore, in the long run, Almightiness type STEP-NC controller should possess the ability of directly processing based on design a model (STEP AP214 etc.).
Both separate between each functional module of STEP-NC digital control system, interrelated again, need the frequent information interaction of carrying out, also need close mutual cooperation each other.The multiple agent technology provides a good implementation strategy.Multi-agent system (wherein each intelligent body is an entity physics or abstract for Multi-Agent system, the MAS) set of being made up of a plurality of computable intelligent bodies, can act on self and environment, and with other intelligent body communication.Cooperation problem-solving ability between each Agent member of MAS Special attention will be given to, the detection that comprise the distribution of task and management, collaborative mode and method, conflicts with clear up, the distribution of resource and management etc.In the Agent system theory, coordination between each Agent and cooperation are the keys of dealing with problems, and must come exchange message by communication between each Agent, and these information comprise target, intention, result and state etc.MAS has independence, distributivity, harmony, and has self organization ability, learning ability and inferential capability.Adopt MAS to solve actual application problem, have very strong robustness and reliability, and have problem of higher and find the solution efficient.MAS is by adopting communication, cooperation, coordination, scheduling, the management between each intelligent body and controlling structure, function and the behavioral trait of expressing real system, for various practical problemss provide a kind of united frame.Each functional module of STEP-NC digital control system all can constitute an independently Agent separately, when same target is finished in their common cooperation, then has the feature of multi-Agent.Single Agent when finishing self task, again can with a plurality of Agent work compounds, realize general objective jointly.
Summary of the invention
Purpose of the present invention is exactly in order to solve the problem of the intelligent numerical control system that technological synthesiss such as lacking STEP-NC, intelligent numerical control system and distributed artificial intelligence at present forms, provide a kind of have rational in infrastructure, the intelligent degree height of control procedure, reconstruct, transplantability are good, the integrated level height such as is easy to safeguard at the architecture and the implementation method of advantage intelligence STEP-NC controller.
For achieving the above object, the present invention has adopted following technical scheme:
The present invention's intelligence STEP-NC controller architecture comprises application service layer, data Layer, operating system layer and hardware device level.Wherein, the Core Feature layer of system---application service layer is made up of the Agent of 14 difference in functionalitys, specifically is to explain Agent, XML processor A gent, process planning Agent, cutter path planning Agent, emulation Agent, man-machine interface Agent, execution Agent, NCK﹠amp; PLC Agent, monitoring Agent, fault diagnosis Agent, parameter are provided with Management Agent, decision agent, the detection Agent and the Agent that communicates by letter.Adopt real-time flexible bus RTCORBA to communicate between each function Agent module, and, carry out the high control of module in real time in the digital control system by The Realtime Operating System Nucleus expansion and high-speed real-time universal serial bus.Data Layer comprises knowledge base (rule of typical process route, various scheduling decisions etc.), various database (machining feature database, processing resource, cutter path, processing technology, technological parameter etc.) and case library (processing instances of various representative workpiece), data Layer provides comprehensive information and data source for intelligent STEP-NC controller process planning and intelligent decision, the realization of auxiliary intelligent each functional module of STEP-NC controller.Operating system layer is made up of non-real time operating system and The Realtime Operating System Nucleus expansion two parts.The Realtime Operating System Nucleus is used for realizing the real-time functions of modules of the various height of digital control system (for example NC kernel), and the non-real time operating system kernel is used for realizing various non real-time sexual functions (for example process planning Agent, emulation Agent etc.).The Realtime Operating System Nucleus can adopt RTLinux, μ C/OS-II etc., and non-real time operating system can be selected Linux or Windows etc., according to selected non-real time operating system and concrete microprocessor, need carry out the transplanting of The Realtime Operating System Nucleus.A kind of implementation is Linux+RTLinux (or Windows+RTX).Non real-time task is finished by the lower process of the priority of Linux, for the function of the exigent control section of real-time, then has the real-time module based on the RTLinux exploitation that operates in kernel spacing to realize.Hardware device level comprises the hardware device level of abstraction, based on hardware platform and and the various hardware resource blocks of PC.Hardware abstraction layer in the described hardware layer be framework on hardware platform based on PC, adopt the driver mode to extract one deck common hardware pattern and DLL (dynamic link library); Various hardware resource blocks comprise Fast Ethernet card, high speed field-bus interface card, operation control panel, motor driver and PLC module etc., and various peripherals (for example operation control panel, servo-driver, PLC module etc.) are connected with the hardware platform of PC by high speed field-bus interface card and communicate by letter.
For function and the principle that further specifies this system, below will do more detailed description to the Agent that uses 14 difference in functionalitys in the service layer:
(1) explains Agent.The STEP-NC file conversion of reading in becomes the data of controller internal format, and deposits database in.
(2) XML processor A gent.The STEP-NC file that the XML processor processing is expressed with the XML form, it comprises xml editor and converter.
(3) process planning Agent.Realize determining of Feature Conversion, resource selection and process conditions; According to the concrete situation that is subjected to controlled machine, determine optimal case and concrete parameter (optimization of the serialization of the process planning of each work step or optimization, work step, work step ordering and overall plan etc.).
(4) cutter path planning Agent.Generate the cutter spacing track of each job step according to information such as machining feature, operation and Processing Strategies.
(5) emulation Agent.Have geological information and technique information that utilization is extracted from the STEP-NC job sequence carry out system modelling and machining simulation; Employing is set up system model based on the modeling technique of feature, realizes the dynamic simulation of process according to the mode of work step.The correctness of verification cutter path.
(6) man-machine interface Agent.Management and log-on data library component, MMI assembly, configuration-system assembly.All MMI assemblies are all undertaken alternately by the relatively stricter assembly of MMI engine module and other real-times, and the MMI engine module obtains the data that the MMI assembly of any connection requires with the fastest message transmission rate from other assemblies.The MMI engine does not carry out the processing of data, but passes to the MMI assembly, and data processing is carried out in the MMI assembly.The configuration-system assembly provides the configuration of the various parameters of digital control system, and the global name space of all parameters is provided.Database component provides the management of user, password and user right, and digital control system support user's different user pattern, connection authority and different views are connected.
(7) carry out Agent.The task of conversion scheduling becomes fill order and sends NCK﹠amp to; PLC Agent.
(8)NCK&PLC?Agent。The NC kernel is realized the function of motion control, main shaft control, axle control and motion control management.PLC is responsible for realizing the ancillary control function of digital control system, relates to: lathe monitoring, cutter-exchange mechanism control, anchor clamps control, lubricated and cooling system control, sensor etc.
(9) monitoring Agent.Process is monitored,, sent signal to fault diagnosis and urgent abnormality processing module if find to have unusually.
(10) fault diagnosis Agent.According to signal and the lathe virtual condition information (information that sensor sends etc.) that monitoring module sends, determine the type of fault, and utilize from recovering module row and remove the various faults that produce in the process.If can't get rid of or urgent abnormal conditions, send message to urgent abnormality processing module, and send emergency alarm to the machine operation personnel.
(11) parameter is provided with Management Agent.Realize the setting of lathe and the various parameters of workpiece and adjustment automatically.
(12) decision agent.Decision-making module is responsible for all intelligency activities on the whole, is main target with the task scheduling, realizes collaborative work mutually between each multi-Agent.It can also start where necessary with the cooperation of external system so that obtain information needed, or hold consultation with regard to processing tasks except utilizing the local data base during decision-making.Obvious this structure and mechanism match with the requirement of autonomous cooperating STEP-NC controller in many aspects.
(13) detect Agent.The size of measuring workpieces and machining precision, checked operation can be counted as a work step.
(14) communication Agent.Realize that transmission of Information is with mutual between the multi-Agent.
Both separate, interrelated again between these functions Agent module, need the frequent information interaction of carrying out, also need close mutual cooperation each other.Adopt real-time flexible bus RTCORBA to communicate between each function Agent module, and, carry out the high control of module in real time in the digital control system by The Realtime Operating System Nucleus expansion and high-speed real-time universal serial bus.Close mutual cooperation between them, binding data layer, operating system layer and hardware device level realize the various functions of intelligent STEP-NC controller jointly.
Implementation method of the present invention is:
1) reads the STEP-NC file, after digital control system is read in the STEP-NC file, be translated into the data of controller internal format;
2) information extraction, carry out file header section, data segment---the extraction of manufacturing information;
3) process planning after the information extraction, is carried out process planning;
4) intermediate file behind the generation process planning;
5) cutter path planning, the intermediate file after the planning does not comprise the cutter spacing track, generates the cutter spacing track of each job step according to information such as machining feature, operation and Processing Strategies;
6) machining process simulating, have geological information and the technique information that extract from the STEP-NC job sequence carry out system modelling and machining simulation; Employing is set up system model based on the modeling technique of feature, realizes the dynamic simulation of process according to the mode of work step;
7) scheduling and decision-making, when controller carried out emulation, parameter management was provided with the setting of carrying out parameter simultaneously, after emulation and parameter setting are all finished, according to the result of process schedule and decision-making, carried out digital control processing;
8) the conversion scheduler task becomes fill order and sends to NCK﹠amp; PLC, if this task is a process operation, the corresponding cutter path file cocurrent of retrieval is given NCK﹠amp from the cutter path database; PLC; If task is a tool changing, from tool magazine, finds corresponding cutter and send to NCK﹠amp; PLC;
9) NCK explains the cutter path order and goes to carry out by servo-drive system, and PLC carries out such as lathe logical operation orders such as tool changing, clamping workpieces;
10) monitoring of process if find to have unusually, sends signal to fault diagnosis module in the digital control processing process;
11) fault diagnosis is got rid of the various faults that produce in the process; If can't get rid of or urgent abnormal conditions, send message to urgent abnormality processing module, and send emergency alarm to the machine operation personnel.
The process planning of intelligent STEP-NC controller is included in that wire gauge is drawn and planning in real time in the described step 3), and wherein online planning comprises operation assessment, the planning of work step level, the planning of feature level and the planning of part level; Planning main realization Real-Time Scheduling and decision-making in real time comprises that the cutter path track generates and the parameter setting.
Scheduling is responsible for arranging each work step in the described step 7), comprises machine work work step and other work step, and execution is in due course; When a certain work step is failed, should plan and insert one automatically and remedy work step.
The present invention is applicable to numerically controlled lathe, numerical control drilling machine, CNC milling machine, numerical control borer, numerically control grinder and numerical control machining center etc., especially is fit to CNC milling machine, numerical control borer and numerical control boring-mill work center.By reducing the partial function module, also can use other numerical control device numerical control press etc.
As machine tool controller of new generation, the architecture of STEP-NC intelligent controller has also been considered the CNC Developing Trend in Technology.System meets the requirement of open cnc, adopt modularization, software implementation and Open architecture, guarantee its opening and reconfigurability from architecture, be convenient to the developer or the user reconfigures it, make it need not do big change and just can adapt to a certain special processing tasks or new control requirement.Compare with the dedicated numerical control hardware platform, the PC platform has that hardware is reliable, integrated level is high, software resource is abundant, the exploitation debugging enironment is good, the software and hardware upgrading is fast, the construction cycle is short, safeguard characteristics such as expansion convenience, ratio of performance to price height, lays a good foundation for developing the high-performance digital control system.The STEP-NC intelligent numerical control system is based on the PC hardware environment.The all functions module all adopts the software that runs under PC platform and the most frequently used operating system environment to realize.The STEP-NC intelligent numerical control system not only can be used as the expansion of traditional digital control system in function aspects, also its decision-making and control task should be treated the harmony of assurance system and STEP-NC data model such as from aspects such as operating mechanism, basic algorithms as a unified integral body.
The invention has the beneficial effects as follows:
(1) support intelligence and networking to make;
(2) modularization, software implementation and open architecture;
(3) has very strong real-time processing capacity;
(4) good restructural and portability;
(5) integrated level is high expands conveniently with safeguarding.
Description of drawings
Fig. 1 is the system assumption diagram based on the intelligent STEP-NC controller of multiple agent of the present invention;
Fig. 2 is that intelligent STEP-NC controller of the present invention is realized process chart.
Embodiment
The invention will be further described below in conjunction with accompanying drawing and embodiment.
Among Fig. 1, intelligent STEP-NC controller system comprises at least one application service layer, at least one data Layer, at least one operating system layer and at least one hardware layer; Wherein, application service layer is a multi-agent system, by explaining Agent, XML processor A gent, process planning Agent, cutter path planning Agent, emulation Agent, man-machine interface Agent, carrying out Agent, NC Nei He ﹠amp; The Agent that PLC Agent, monitoring Agent, fault self-diagnosis Agent, parameter are provided with Management Agent, decision agent, detection Agent and Agent14 the difference in functionality of communicating by letter forms, adopt real-time flexible bus RTCORBA to communicate between each function Agent module of application service layer, and, carry out high control in real time in the digital control system by The Realtime Operating System Nucleus and high-speed real-time universal serial bus.Data Layer provides comprehensive information and data source for the realization of application service layer, application service layer, data Layer and operating system layer operate in the hardware platform based on PC, and various peripherals are connected with the hardware platform of PC by high speed field-bus interface card and communicate by letter.
Data Layer comprises knowledge base (rule of typical process route, various scheduling decisions etc.), various database (machining feature database, processing resource, cutter path, processing technology, technological parameter etc.) and case library (processing instances of various representative workpiece), data Layer provides comprehensive information and data source for intelligent STEP-NC controller process planning and intelligent decision, the realization of auxiliary intelligent each functional module of STEP-NC controller.
Operating system layer is made up of non-real time operating system and The Realtime Operating System Nucleus expansion two parts, and the The Realtime Operating System Nucleus in the operating system layer is used for realizing the real-time functions of modules of the various height of digital control system; Non-real time operating system is used for realizing various non real-time sexual function tasks.The Realtime Operating System Nucleus can adopt RTLinux, μ C/OS-II etc., and non-real time operating system can be selected Linux or Windows etc., according to selected non-real time operating system and concrete microprocessor, need carry out the transplanting of The Realtime Operating System Nucleus.A kind of implementation is Linux+RTLinux (or Windows+RTX).Non real-time task is finished by the lower process of the priority of Linux, for the function of the exigent control section of real-time, then has the real-time module based on the RTLinux exploitation that operates in kernel spacing to realize.
Hardware layer comprises hardware abstraction layer, based on hardware platform and and at least one hardware resource blocks of PC.Hardware abstraction layer in the hardware layer be framework on hardware platform based on PC, adopt the driver mode to extract one deck common hardware pattern and DLL (dynamic link library); Various hardware resource blocks comprise Fast Ethernet card, high speed field-bus interface card, operation control panel, servo-driver and PLC module etc., and various peripherals are connected with the hardware platform of PC by high speed field-bus interface card and communicate by letter.
Implementation method of the present invention is:
Step 1: read the STEP-NC file.After digital control system is read in the STEP-NC file, be translated into the data of controller internal format, as C, C++, Java etc. (specifically determining) by the programming language of system.This process is called the explanation of STEP-NC program, and corresponding functional modules then is called interpreter;
Step 2: information extraction.Carry out file header section, data segment---the extraction of manufacturing information (characteristic information, technique information, programme of work, geological information) information;
Step 3: process planning.After the information extraction, carry out process planning.The process planning in numerical control programming stage is generally off-line planning or outside planning.For intelligent STEP-NC controller, only have this basic field program ability and still be not enough to realize recalling of dynamic programming, Based Intelligent Control and data etc., the present invention proposes a kind of method of dynamic process planning of intelligent STEP-NC controller, and it is made up of online planning and real-time planning two parts.Off-line planning comprises Feature Conversion, resource selection and definite process conditions; Online planning comprises operation assessment, the planning of work step level, the planning of feature level and the planning of part level; Planning in real time is main to realize Real-Time Scheduling and decision-making, comprises that the cutter path track generates and parameter is provided with etc.
Step 4: the intermediate file behind the generation process planning;
Step 5: cutter path planning.Intermediate file after the planning does not comprise the cutter spacing track, and the function of this module is exactly the cutter spacing track that generates each job step according to information such as machining feature, operation and Processing Strategies;
Step 6: machining process simulating.Have geological information and the technique information that extract from the STEP-NC job sequence carry out system modelling and machining simulation; Employing is set up system model based on the modeling technique of feature, realizes the dynamic simulation of process according to the mode of work step;
Step 7: scheduling and decision-making.When controller carried out emulation, the lathe parameter management was provided with the setting that module is carried out lathe parameter simultaneously, after emulation and lathe parameter setting are all finished, according to the result of process schedule and decision-making, carried out digital control processing.Scheduling is responsible for arranging each work step (comprising machine work work step and other work step), and execution is in due course.In addition, when a certain work step is failed, should plan and insert one automatically and remedy work step;
Step 8: the conversion scheduler task becomes fill order and sends to NCK﹠amp; PLC.If this task is a process operation, the corresponding cutter path file cocurrent of retrieval is given NCK﹠amp from the cutter path database; PLC.If task is a tool changing, from tool magazine, finds corresponding cutter and send to NCK﹠amp; PLC;
Step 9:NCK explains the cutter path order and goes to carry out by servo-drive system that PLC carries out such as lathe logical operation orders such as tool changing, clamping workpieces;
Step 10: the monitoring of process.If finding has unusually, send signal to fault diagnosis module in the digital control processing process;
Step 11: fault diagnosis.Get rid of the various faults that produce in the process.If can't get rid of or urgent abnormal conditions, send message to urgent abnormality processing module, and send emergency alarm to the machine operation personnel.
Claims (7)
1. an intelligent STEP-NC controller system is characterized in that, it comprises at least one application service layer, at least one data Layer, at least one operating system layer and at least one hardware device level; Wherein, the multi-agent system formed by the Agent of a plurality of difference in functionalitys of application service layer; Data Layer comprises knowledge base, various database and case library; Operating system layer is made up of non-real time operating system and The Realtime Operating System Nucleus expansion two parts; Hardware device level comprise the hardware device level of abstraction, based on the hardware platform of PC and and at least one hardware resource blocks; Adopt real-time flexible bus to communicate between each function Agent module of application service layer, data Layer provides comprehensive information and data source for the realization of application service layer, application service layer, data Layer and operating system layer operate in the hardware platform based on PC, and various peripherals are connected with the hardware platform of PC by high speed field-bus interface card and communicate by letter.
2. intelligent STEP-NC controller system according to claim 1, it is characterized in that described application service layer is by explaining Agent, XML processor A gent, process planning Agent, cutter path planning Agent, emulation Agent, man-machine interface Agent, carrying out Agent, NCK ﹠amp; PLC Agent, monitoring Agent, fault self-diagnosis Agent, parameter are provided with Management Agent, decision agent, detection Agent and the Agent that communicates by letter composition, adopt real-time flexible bus to communicate between each function Agent module, and, carry out the high control of module in real time in the digital control system by The Realtime Operating System Nucleus expansion and high-speed real-time universal serial bus.
3. intelligent STEP-NC controller system according to claim 1 is characterized in that, the The Realtime Operating System Nucleus in the described operating system layer adopts RTLinux or μ C/OS-II or other operating system, to realize the real-time functions of modules of the various height of digital control system; Non-real time operating system realizes various non real-time sexual function tasks with adopting Linux or Windows or other operating system.
4. intelligent STEP-NC controller system according to claim 1 is characterized in that, the hardware abstraction layer in the described hardware layer be framework on hardware platform based on PC, adopt the driver mode to extract one deck common hardware pattern and DLL (dynamic link library); Various hardware resource blocks comprise Fast Ethernet card, high speed field-bus interface card, operation control panel, motor driver and PLC module etc., and various peripherals are connected with the hardware platform of PC by high speed field-bus interface card and communicate by letter.
5. the implementation method of the described intelligent STEP-NC controller system of claim 1 is characterized in that,
1) reads the STEP-NC file, after digital control system is read in the STEP-NC file, be translated into the data of controller internal format;
2) information extraction, carry out file header section, data segment---the extraction of manufacturing information;
3) process planning after the information extraction, is carried out process planning;
4) intermediate file behind the generation process planning;
5) cutter path planning, the intermediate file after the planning does not comprise the cutter spacing track, generates the cutter spacing track of each job step according to information such as machining feature, operation and Processing Strategies;
6) machining process simulating, have geological information and the technique information that extract from the STEP-NC job sequence carry out system modelling and machining simulation; Employing is set up system model based on the modeling technique of feature, realizes the dynamic simulation of process according to the mode of work step;
7) scheduling and decision-making, when controller carried out emulation, parameter management was provided with the setting of carrying out parameter simultaneously, after emulation and parameter setting are all finished, according to the result of process schedule and decision-making, carried out digital control processing;
8) the conversion scheduler task becomes fill order and sends to NCK﹠amp; PLC, if this task is a process operation, the corresponding cutter path file cocurrent of retrieval is given NCK﹠amp from the cutter path database; PLC; If task is a tool changing, from tool magazine, finds corresponding cutter and send to NCK﹠amp; PLC;
9) NCK explains the cutter path order and goes to carry out by servo-drive system, and PLC carries out such as lathe logical operation orders such as tool changing, clamping workpieces;
10) monitoring of process if find to have unusually, sends signal to fault diagnosis module in the digital control processing process;
11) fault diagnosis is got rid of the various faults that produce in the process; If can't get rid of or urgent abnormal conditions, send message to urgent abnormality processing module, and send emergency alarm to the machine operation personnel.
6. the implementation method of intelligent STEP-NC controller system according to claim 5, it is characterized in that, the process planning of intelligent STEP-NC controller is included in that wire gauge is drawn and planning in real time in the described step 3), and wherein online planning comprises operation assessment, the planning of work step level, the planning of feature level and the planning of part level; Planning main realization Real-Time Scheduling and decision-making in real time comprises that the cutter path track generates and the parameter setting.
7. the implementation method of intelligent STEP-NC controller system according to claim 5 is characterized in that, scheduling is responsible for arranging each work step in the described step 7), comprises machine work work step and other work step, and execution is in due course; When a certain work step is failed, should plan and insert one automatically and remedy work step.
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