발간년도 : [2017]
| 논문정보 |
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| 논문명(한글) |
[Vol.12, No.6] A Study on Controller Design for Time Delayed System |
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| 논문투고자 |
Houng-Kun Joung, Dong-Kyun Lim |
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| 논문내용 |
This study compared methods of designing a robust PID controller, which satisfies the design specification in a system with time delay, and has robustness and stability at the same time. This study compared the PID controller tuning method of Ziegler and Nichols and the PID controller design method by using the suggested by Grassi of H∞ . The PID controller tuning methods of Ziegler and Nichols include a step response method, a frequency response method, and a modified method. The PID controller tuning methods of Ziegler and Nichols are widely used in industrial fields and are easy to design mathematically. They are PID control tuning methods widely used for the systems that the dynamic characteristics of a plan are not fully known. The PID controller design method using Grassi of H∞ is a PID tuning method that H∞ norm, which guarantees the stability and robustness, uses the convex optimization method. This study compared the method of Ziegler and Nichols and the method proposed by Grassi of H∞ to propose a controller tuning method guaranteeing the stability and robustness, supposed to be guaranteed by a PID controller. Moreover, the performance of two methods was compared through simulations. In order to consider the design specifications for the frequency domain, simulations were compared after dividing the design conditions into a low-frequency barrier, satisfying the command follow-up and external disturbance canceling performances, and a high-frequency barrier, corresponding to the low sensitivity performance against the sensor noise. |
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