II. SPEED REGULATION SYSTEM OF BASIC FRAME
STRUCTURE
Traditional engineering application on PID algorithm takes the mode of software, that is, through software program compiled will realize PID algorithm control functions. The
FPGA design flexible and hardware resource is rich, so this paper based on FPGA to realize PID module hardware structures, the fuzzy control rule table through the ROM in
Quartus II to store, thus to realize fuzzy PID controller hardware implementation. In order to save the hardware logic resources, uses the Nios II speed system control module check (PID module) effective control, and at the same time, to motor speed and direction of rotation through the LCD screen of real-time display, application of key brushless dc motor speed and direction of rotation adjustment, forming a brushless dc
motor system.