적응제어형 외란 관측기를 이용한 BLDC 전동기의 정밀위치제어에 대한 연구 = A Study on Adaptive Load Torque Observer for Robust Precision Position Control of BLDC Motor

다국어 초록 (Multilingual Abstract)

A new control method for precision robust position control of a brushless DC (BLDC) motor using asymptotically stable adaptive load torque observer is presented in the paper. Precision position control is obtained for the BLDC motor system approximately linearized using the field-orientation method Recently, many of these drive systems use BLDC motors to avoid backlashes. However, the disadvantages of the motor are high cost and complex control because of nonlinear characteristics. Also, th load torque disturbance directly affects the motor shaft The application of the load torque observer is published in [1] using fixed gain. However, the motor flux linkage is not exactly known for a load torque observer. There is the problem of uncertainty to obtain very high precision position control Therefore a model reference adaptive observer is considered to overcome the problem of unknown parameter and torque disturbance in this paper. The system stability analysis is carried out using Lyapunov stability theorem. As a result, asymptotically stable observe gam can be obtained without affecting the overall<br/>
system response. The load disturbance detected by the asymptotically stable adaptive observer is compensated by feed for warding the equivalent current WhICh gives fast response The experimenta results are presented in the paper.

목차 (Table of Contents)

• Abstract
  
• 1. INTRODUCTION
  
• 2.MODELING OF BLDC MOTOR
  
• 3.CONTROL ALGORITHM
  
• 4.CONFIGUURATION OF OVERALL SYSTEM
  
• 5.SIMULATION AND EXPERIMENTAL RESULTS
  
• 6.CONCLUSION
  
• ACKNOWLEDGEMENT
  
• REFERENCES