| Title |
BLDC Motor PID Speed Control using Ziegler-Nichols Step Response Method |
| Authors |
신승호(Seung-Ho Shin) ; 한상수(Sang-Soo Han) |
| DOI |
https://doi.org/10.5573/ieie.2020.57.10.59 |
| Keywords |
BLDC motor; PID controller; Ziegler-Nichols step response method; Wind-up; Settling time |
| Abstract |
Today, BLDC motors are used in many industries because of their high efficiency and high torque characteristics compared to the size of motors and their wide general purpose. BLDC motors have the disadvantages such as large overshoots, wind-up phenomenon, and longer settling times according to load changing and speed changing. Various PID tuning techniques are being developed to improve the speed response characteristics of BLDC motors and achieve high stability. In this paper, we design the Ziegler-Nichols step response method directly and propose the PID speed controller of BLDC motors using this. The efficiency and usefulness of the proposed PID speed controller were compared with automatic tuning PID controllers through Matlab 2020a and Simulink, and the simulation experiment showed that overshoots (2.53%) were reduced for load and speed fluctuations, and settling times were reduced (27.74%). In addition, it was confirmed that it has a stable speed response characteristics as the wind-up phenomenon caused by the integrator in the steady state speed response decreased (2%). |