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전문가 시스템 기반 살수 시험기 챔버를 위한 온도 제어 알고리즘 개발
강석균,도태용 제어·로봇·시스템학회 2022 제어·로봇·시스템학회 논문지 Vol.28 No.12
The PID controller used to regulate the internal temperature of a splash water chamber has only one modeling and control gain set. In addition, it is very difficult to control the temperature within a splash water chamber because of hardware design problems. The heater can be finely controlled by changing the output amount from 0 to 100% through the PWM method. However, the chiller cannot be connected to the output of the PID controller due to hardware compatibility issues. Therefore, the chiller is not finely controllable and only has output levels of 100%, 60% and 40%. Therefore, the control system is designed to control the temperature using the heater only after setting the output level of the chiller. This type of design causes problems such as not reaching the desired temperature, exceeding the settling time, and creating overshoots. In this paper, an expert system is introduced to develop a control algorithm to solve the above-mentioned problems. The expert system to be developed consists of supervisory rules and reasoning rules; based on these rules, the output level of the chiller is switched to achieve the desired performance such as fast settling to the target temperature and elimination of overshoot. To validate the feasibility of the proposed method, several experiments are performed and the results are provided. .
이유희,강석균,안병준 충남대학교 약학대학 의약품개발연구소 1986 藥學論文集 Vol.2 No.-
A strongly cytotoxic fraction (Fc-2, ED_50=0.0003㎍/㎖) against L1210 cell was obtained from the root, seed and fruit of Trichosanthes kirilowii, Administration of Fc-2 prolonged the life span of the BDF1 mice bearing L1210 and the ICR mice bearing S-180 by 135% and 130%, respectively. The Fc-2 affected L1210 cells were enlarged in their diameters two or three times in comparison with the untreated ones. When 20㎎/㎏ of Fc-2 was administered, intraperitoneally, all the mice were killed.