Abstract—Because of its high performance, brushless DC
motors are widely used in motor vehicles. In this paper,
according to analysis of present motor control system, a
novel hardware structure of motor control system was
presented. It is based on Field Programmable Gate Arrays
(FPGA) and Digital Signal Processor (DSP). According to
the function needed in motor control and the structure
feature of FPGA and DSP, the tasks taken by FPGA and
DSP were divided. A functional design of FPGA in a
brushless DC motor system based on FPGA and DSP was
completed by using modular design method. All the function
modules are programmed by Very-High-Speed Integrated
Circuit Hardware Description Language (VHDL).The
function modules implemented in FPGA were introduced in
detail. The advantage of the system is its good operational
performance and expansibility. The application of FPGA
can greatly simplify the design of peripheral circuits and
release DSP from tedious operation. The simulation and
experiment results verified its validity, and it can also act as
an example for the application of FPGA in motor control
field.