FPGA-based shakeless drive control system of stepping motor and control method based on same

The invention provides an FPGA-based shakeless drive control system of a stepping motor and a control method based on the system, relating to the field of stepping motor control and solving the problem that a traditional stepping motor control system cannot avoid poor timing control accuracy during driving, shortage of external communication interfaces and structure complexity of an electric system. According to the system disclosed by the invention, an upper computer carries out data interaction with an FPGA controller through a serial communication bus; the FPGA controller outputs a pulse signal, a direction signal, an enable signal and a mode signal to a digital signal isolation module; a control signal output end of the digital signal isolation module is connected with a control signal input end of a stepping motor drive module; the stepping motor drive module drives an external motor; a power isolation module is respectively connected with the FPGA controller, the digital signal isolation module and the stepping motor drive module. Through using FPGA and integrating a stepping motor power drive chip, the complexity of the electric structure of the stepping motor drive control system can be reduced largely and moreover multi-communication-mode expansion capability is also considered.