【正文】 Explain the position and the functions of each ponent of CNC system.216。3） NC內(nèi)核的深層次開(kāi)放 (① PC+實(shí)時(shí)硬插件； ② PC+實(shí)時(shí)軟中斷 )。另外用戶(hù)自身的技術(shù)訣竅能方便地融入，創(chuàng)造出自己的名牌產(chǎn)品；216。開(kāi)放式數(shù)控系統(tǒng)特點(diǎn)： ■ 系統(tǒng)構(gòu)件（軟件和硬件）具有標(biāo)準(zhǔn)化 (Standardization)與多樣化 ( Diversification)和互換性 Interchangeability)的特征 ■ 允許通過(guò)對(duì)構(gòu)件的增減來(lái)構(gòu)造系統(tǒng)，實(shí)現(xiàn)系統(tǒng) “ 積木式 ” 的集成構(gòu)造，應(yīng)該是可移植的和透明的；《 NC Technology 》 E－ mail: .開(kāi)放體系結(jié)構(gòu)開(kāi)放體系結(jié)構(gòu) CNC的優(yōu)點(diǎn)的優(yōu)點(diǎn)216。 entering the loop executing of background application. During the executing of background application, real time interruption procedures intervene every now and then to implement every real time controls. 《 NC Technology 》 E－ mail: .Tandem architecture《 NC Technology 》 E－ mail: .Interruption architecture216。 Foreground and background applications work cooperatively to implement all functions and controls of CNC system. 《 NC Technology 》 E－ mail: .Tandem architecture216。interruption architecture. 《 NC Technology 》 E－ mail: .Tandem architecture216。CNC system software architecture is the anizing and managing mode of CNC system software, ., tasks dividing scenario, tasks scheduling mechanism, method of information exchanging between tasks, and method of system integration.216。internal timer interruption216。Real time process means that CNC system can react in time to the requests and events of system equipment(s). 216。apposition parallel process technology is widely and successfully adopted in the hardware design of CNC system, for example, adopting Multi173。sharing technologyvresource173。resource173。 Independent software manages time, tasks, memory, and internal munications, and synchronizes various procedures. 《 NC Technology 》 E－ mail: .Parallel processing 《 NC Technology 》 E－ mail: .Real time processing Interpolation Position control《 NC Technology 》 E－ mail: .Parallel processing216。diagnosis and spot the faults. It is also on duty of synchronizing various procedures. 《 NC Technology 》 E－ mail: .Managing Software216。managing software connects each function subroutine to hardware. 216。 position control software can usually adjust the magnification of the position loop circuit, pensate the error of pitch of screws in each direction of axes, and pensate the non173。 While there is an unexpected abrupt changing in velocity during machining, the speed control subroutine should automatically speed up or slow down the velocity to avoid pace loss in drive system. 216。s center path considering the offset of tool radius。codes arranged according to the process sequence. 《 NC Technology 》 E－ mail: .System software CNC system software can be sorted into two packages: managing software and control software.《 NC Technology 》 E－ mail: .The function of control software (1) Compiling the part codes inputted by users After receiving the part codes, piler will translate, trim and store them into a specified format。Blue173。 ALLEN173。B system (American) are of this architecture 《 NC Technology 》 E－ mail: .Personal puter architecture 216。work munication technology 《 NC Technology 》 E－ mail: . Master173。distributed system216。functional modules architecturevIn this architecture, CNC unit is divided into several function modules. Its hardware and software are designed with modularization method, that is to say, each function module is made of printed circuit of same size, and the control software of function modules are also designed in modularization. Hence, customers can establish their own CNC units by bining their selected function modules into the card racks of a motherboard. CNC control module, position control card, PLC card, graph display card and munication card are familiar function modules. 《 NC Technology 》 E－ mail: .a holonomic CNC lath system 《 NC Technology 》 E－ mail: .Single microprocessor architecture? There is only one microprocessor, which processes various NC tasks by time173