Open structure digital control system with self-guiding secondary development simulation platform

Abstract

The open structure digital control system includes the digital control system comprising CPU, general control and user interactive chip, memory chip, power supply and clock circuit and interface circuit connected by the system bus in the mainboard; one secondary development simulation chip, one simulation development memory chip, one secondary development memory chip, one secondary development platform and one secondary development interface; and secondary development control software cured inside the secondary development simulation chip. The present invention is suitable for uses to develop and expand new functions for meeting various requirement in new product manufacturing during the production process to product. The present invention has the features of low cost, easy operation and control, being practical, etc.

Description

technical field [0001] The invention belongs to the category of control and adjustment, and in particular relates to the control of an open-structure numerical control system of a computer-guided secondary development simulation platform. Background technique [0002] The current CNC system basically has two modes, one is the closed structure CNC system of the traditional dedicated single-chip processor mode, and the other is the open CNC system based on the industrial computer and motion control card mode that is currently in the research and development stage. [0003] The traditional mode of numerical control system uses a dedicated single-chip microcomputer as the hardware core. The closed architecture shields all system technical details, and only provides users with fixed-function external general control interfaces. Users must select matching peripheral drive devices according to system requirements. Realize the construction of CNC...

AI Technical Summary

Problems solved by technology

Once the system is finalized, users are bound by the fixed functions and performance of the system

Since there is no secondary development interface specially provided to users, nor is there a special secondary development environment, users cannot improve the original functions and add new functions, making the CNC system unable to adapt to the ever-changing production and processing requirements

[0004] In terms of software structure, most closed CNC systems use assembly language matching the central processing unit to form the system. This language is difficult to build a modular software environment and is highly dependent on hardware, so it is difficult to be transplanted and secondary. development, which is a fatal reason why it is extremely difficult for traditional model CNC systems to achieve openness

The open CNC system currently in the active research and development stage basically adopts the structural mode of the industrial control computer supporting the motion control card to realize the CNC control of the machine tool. The openness of this mode of CNC system is mainly borrowed from the current PC computer. The open feature of the PC computer is essentially just a board-type control application of the PC computer, which has great limitations in structure and performance:

Since it adopts a general-purpose computer platform, the openness possessed is the inherent openness of the computer itself, and is not defined for the characteristics of NC machining. As a general-purpose platform, the computer does not consider the particularity of NC machining in terms of the underlying hardware design and operating system environment, so it is impossible to fundamentally build a NC platform

[0006] 2. The open CNC system in the industrial computer mode cannot guarantee real-time performance and reliability

Because the PC computer uses a general-purpose operating system during operation, it takes up a lot of system resources, and tasks unrelated to NC machining may take up more work shares of the system. They interfere with the timely response of the system to on-site processing, reducing the The system's processing speed of important control events increases the overhead of system operation, which will lead to system instability

[0007] 3. The cost of industrial computer mode CNC system is too high

[0008] 4. Since the control system does not have an independent open structure system, it must rely on the structure system and software framework of the PC computer, so it is destined to only reflect the secondary development in the form of this single function library, which requires an ordinary user or a Machine tool operators have a good programming foundation and computer hardware and software knowledge, which is undoubtedly too much for users who only need general improvement, and sometimes it is not worth the candle

For advanced users, it is not enough to only provide function libraries.

In addition, the current development methods do not have a special and friendly platform, and there is no guided process suitable for the development of CNC functions to help users define functions. On the one hand, users cannot make full use of the structural advantages of the open CNC system; Make detours for inexperienced users or users who are not very clear about the required functions or even destroy the stability of the system

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