Inlaid numerical control system based on ARM and DSP

Abstract

The invention releases to a kind of embedded numerical control system that is based on ARM and DSP. It contains a main control that is micro-processor S3C44B0 slug and an interpolating control that is DSP slug and TMS2812 slug from the TI Company. The working process of the embedded numerical control system is that the G-code of the user inputting is transformed by ARM7 embedded micro-processor into orders that can control every electric motor by numerical control system. The orders contain G order, M order, S-order and T-order and so on. The orders are put into TMS2812 interpolating control by the micro-processor and than put out the clamp-pulse driven module. The invention has ARM+DSP configuration instead of original PC configuration. The advantages of the embedded numerical control system are strong calculation and low cost so as to reduce the volume and power consumption of the system and improve the dependability and reconfiguration of it.

Description

technical field [0001] The invention belongs to the technical field of mechatronics numerical control, and specifically relates to an embedded numerical control system based on ARM and DSP based on an ARM7 chip as a main controller and a DSP chip as an interpolation controller. Background technique [0002] In order to realize the openness of the software and hardware of the numerical control system at present, the research on the open system generally focuses on making full use of the software and hardware platform of the industrial PC which is already very mature. The CNC system based on industrial PC has great limitations in structure and performance: [0003] (1) There is no definition of an independent open structure suitable for NC machining control. [0004] Because the traditional CNC system uses a general-purpose industrial computer platform, the openness it possesses is an inherent open feature of the computer itself, and is not defined for the characteristics of ...

AI Technical Summary

Problems solved by technology

As a general-purpose platform, the general-purpose industrial PC computer does not consider the particularity of NC machining in terms of the underlying hardware design and operating system environment, so it cannot fundamentally build a NC platform.

[0005] (2) The open numerical control system of general industrial PC computer mode cannot guarantee real-time performance and reliability well

[0006] Because the industrial PC computer uses a general-purpose operating system, it takes up a lot of system resources. Tasks that are not related 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 processing speed of the system for important control time is reduced, and the operating overhead of the system is increased, which will lead to the instability of the system

[0007] (3) The cost of the numerical control system in the general industrial PC computer mode is too high

[0008] A general-purpose industrial PC computer that can meet the speed requirements of CNC machining needs to invest at least several thousand yuan in hardware, and the cost in software is even higher. Coupled with a motion control card, it is difficult to reduce the cost

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