Research And Development Of A Motion Control Board Based On DSP

Motion control is a key technology in promoting new product innovation and industrial revolution. With the progress of motion control technology, it has been widely used in many industrial automation products in recent years, and forms a remarkable market. Now, motion control cards with DSP as the core are becoming the main trend of motion control. They can easily be plugged-in PC to combine the information processing capabilities of PC with the motion control capabilities of motion control cards, which have the advantages of powerful information processing capability, strong motion control ability and good openness.By analyzing the structure and functions of several typical motion control cards, a motion control card using DSP and PCI interface is developed.The hardware frame of our motion control card is designed. 32-bit fixed-point DSP TMS320F2812 is used as the controlling core, and PCI bus interface is realized by using PCI9052, a CPLD is used as logic circuit. The design method of the functional modules of the control card are discussed in detail, such as the minimum system of DSP,the interface of DSP and PC,the digital I/O circuit and the analog export circuit.The driver of the motion control card is developed by Windriver. The program of DSP including the initialization,the communications with PC and the test of functional modules of the card is designed by modular programming methods.