Incremental fuzzy control of BLDC motor on FPGA for missiles

In this study, the comparison of Incremental Fuzzy and Proportional Integral (PI) control methods on Field Programmable Gate Array (FPGA) is investigated for gimbals and fins of missiles which include Brushless Direct Current (BLDC) motors. The BLDC motors are widely used in two important parts of guided missiles due to their high performance. Firstly, Gimbals usually include two BLDC motors and seeker camera. These motors provide two axis seeker camera motions, so the missiles can trace the target. Secondly, missiles can be guided to intended direction by BLDC motors that are used in the control system of fins. According to these roles, the control of BLDC motors is very important for missiles and defense industry. Therefore, the performances of Incremental Fuzzy and PI control methods on BLDC motors were analyzed in detail in terms of both simulation and experimental study. The simulation results were obtained by using Matlab/Simulink program. FPGA based electronic board was used for experimental results. The experimental results are compatible with simulation results. It is proved that Incremental Fuzzy control method is more reliable and stable than PI control method. So implementation of Incremental Fuzzy control method improves the missiles performance.