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With the rapid development of the digitization and informationization, the application of numerical control technology in
the manufacturing industry becomes more and more important. However, the conventional numerical control system
usually has some shortcomings such as the poor in system openness, character of real-time, cutability and
reconfiguration. In order to solve these problems, this paper investigates the development prospect and advantage of the
application in numerical control area with system-on-a-Programmable-Chip (SOPC) technology, and puts forward to a
research program approach to the NC controller based on SOPC technology. Utilizing the characteristic of SOPC
technology, we integrate high density logic device FPGA, memory SRAM, and embedded processor ARM into a single
programmable logic device. We also combine the 32-bit RISC processor with high computing capability of the
complicated algorithm with the FPGA device with strong motivable reconfiguration logic control ability. With these
steps, we can greatly resolve the defect described in above existing numerical control systems.
For the concrete implementation method, we use FPGA chip embedded with ARM hard nuclear processor to construct
the control core of the motion controller. We also design the peripheral circuit of the controller according to the
requirements of actual control functions, transplant real-time operating system into ARM, design the driver of the
peripheral assisted chip, develop the application program to control and configuration of FPGA, design IP core of logic
algorithm for various NC motion control to configured it into FPGA. The whole control system uses the concept of
modular and structured design to develop hardware and software system. Thus the NC motion controller with the
advantage of easily tailoring, highly opening, reconfigurable, and expandable can be implemented.
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