In order to avoid the FPGA language HDL code cumbersome, in this paper, by using Simulink integrated toolkit Xilinx FPGA unique System Generator module series, around three servo motor control application has carried on the simulation and experimental research. First of all, according to three kinds of servo motor control PWM signal waveform, the Simulink block diagram was established based on System Generator; Second, the Simulink simulation results correctly generated on the basis of HDL code; Then, using the ISE ModelSim simulation supporting software of HDL code test; Finally, on the basis of the ModelSim simulation results right code to load the FPGA hardware, and by using the ChipScope Pro PWM signal test. Accordance with the experimental results and simulation results, show that the method is simple, has a certain practical application value.