발간년도 : [2021]
| 논문정보 |
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| 논문명(한글) |
[Vol.16, No.2] A Design of PI Current Controller Gain Decision for Brushless Linear DC Motor Using Coefficient Diagram Method |
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| 논문투고자 |
Min-Cheol Kim |
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| 논문내용 |
In modern times, although many control theories have been developed, the classical control methods such as PID or Lead/Lag compensator control methods are still mainly applied in industrial. Classical control methods have a simple structure, are easy to implement, and show excellent performance in tracking target values, but there are also disadvantages that a lot of time and effort are consumed because the controller gain is empirically adjusted by a field expert. Therefore, in view of this background, CDM (Coefficient Diagram Method) systemized as a controller design technique in a coefficient space was announced to design a controller with simple, stability, time response, and robustness for any plant. The CDM technique is a method of designing an arbitrary order controller considering the characteristics of the plant from the logarithm scale after designing a coefficient diagram in which the coefficients of the polynomial are expressed on the vertical axis and the coefficient diagram in descending order of the polynomial order is designed on the horizontal axis. This CDM has the advantage of simultaneously considering several things such as system stability, settling time, response speed, and robustness. This paper proposes a method gain tuning of PI current controller for the BLLDCM(Brushless Linear DC motor) using a new algebraic control scheme, CDM. Based on the modeled BLLDCM, the simulation are performed under step-response and load condition using CDM comparing with the conventional gain tuning method(Cross-over angular frequency) of current PI controller for BLLDCM, the proposed CDM method shows improved characteristics for system response via some simulation results. |
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