The Design Of Open Architecture Motion Control System

In this thesis, a novel design scheme of open motion controller system based on industrial PC is studied. Open architecture motion controller is a firmware system with modularization, reconfiguration and expansion. The core of system is built up by open and independent software module. Application can embed advanced control strategy and custom module in the open control system.Firstly, the open architecture motion control technology and its novel development trend are introduced briefly in this thesis. Then, the hardware and software realization method of one kind of open servo motion control system based on PCI bus are specified. In the system, PCI bus interface device (PCI9054) is used to realize the PCI Bus Specification and can be connected directly to the local target. FPGA chip is designed to realize the management of local hardware resource and the interface of Host PC. The system interface circuit includes input and output of digital signal, input and output of analog signal, input of encoder, output of position pulse. Based on DOS platform, the device driver software and the function software module of the control system are coded, which realize the trajectory planning of T-curve and S-curve and friendly HMI interface. At last all testing works of function verification are done on the hardware platform.With the development of PC software and hardware technology, performance and open of PC-based open architecture servo system will be improved greatly. The motion control system has extensive application prospect in practice. It can act as not only experiment platform to verify the novel control strategy but also as total solution for customer.