Design and Research on Four axis Motion Controller Based on DSP and FPGA
According to the characteristics and requirements of CNC system,a motion controller based on DSP and FPGA was designed through a research on DSP TMS320F2812,FPGA EP2C8F256C6 and Ethernet controller RTL8019AS.For the real time control and high precision issues of motion control,planning the DSP function expansion and expanding four axis motion control circuit with independent function in the FPGA.The circuit can implement four way control signal outputs,can deal with four way encoder feedback signals,and can receive and dispose input digital signals such as origin signal,positive and negative limit signals and so on.The motion controller has simple structure,openness,modularity,etc.It can better meet the real time and accurate performance of the motion controller.