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Mp Criterion Based Multiloop PID Controllers Tuning for Desired Closed Loop Responses
Lee, Dong-Yup,Lee, Moonyong,Lee, Yongho,Park, Sunwon 한국화학공학회 2003 Korean Journal of Chemical Engineering Vol.20 No.1
A tuning method of multiloop PID controllers is developed based on the generalized IMC PID tuning rule by Lee et al. (1998a). To extend the SISO PID tuning method to MIMO systems, a new tuning criterion is proposed. The criterion is based on the closed loop frequency response method to meet desired performance and robustness as close as possible. Examples for 2*2, 3*3 and 4*4 systems are used to illustrate the proposed method. The results show that the proposed method is superior to conventional method such as the BLT tuning method.
Process Control Using a Neural Network Combined with the Conventional PID Controllers
Lee, Moonyong,Park, Sunwon Institute of Control 2000 Transaction on control, automation and systems eng Vol.2 No.2
A neural controller for process control is proposed that combines a conventional multi-loop PID controller with a neural network. The concept of target signal based on feedback error is used for on-line learning of the neural network. This controller is applied to distillation column control to illustrate its effectiveness. The result shows that the proposed neural controller can cope well with disturbance, strong interactions, time delays without any prior knowledge of the process.
Process Control Using n Neural Network Combined with the Conventional PID Controllers
Lee, Moonyong,Park, Sunwon Institute of Control 2000 Transaction on control, automation and systems eng Vol.2 No.3
A neural controller for process control is proposed that combines a conventional multi-loop PID controller with a neural network. The concept of target signal based on feedback error is used fur on-line learning of the neural network. This controller is applied to distillation column control to illustrate its effectiveness. The result shows that the proposed neural controller can cope well with disturbance, strong interactions, time delays without any prior knowledge of the process.
Synthesis of 2,4,6,8,9,11-hexaaza[3.3.3]propellanes as a new molecular skeleton for explosives
Lee, Byeongil,Shin, Moonyong,Seo, Youngran,Kim, Myeong Hak,Lee, Hye Ryoung,Kim, Jin Seok,Chung, Kyu-hyun,Yoo, Dongwon,Kim, Young Gyu Elsevier 2018 Tetrahedron Vol.74 No.1
<P><B>Abstract</B></P> <P>Azapropellanes are of great interest in many disciplines, including materials science and medicinal chemistry. Various synthetic approaches for azapropellanes have been explored; however, the synthetic study of the polyazapropellane skeleton containing five or more nitrogen atoms is rare. Here, we report a simple yet highly efficient protocol for the synthesis of the hexaaza[3.3.3]propellane skeleton as a building block for high energy materials for the first time. The key reactions include the Boc<SUB>2</SUB>O-assisted cyclization of glycoluril diamine without a column purification step and the first full reduction of all the three carbonyl groups to the methylene groups through a combination of LiAlH<SUB>4</SUB> and DIBAL-H. All the structures were confirmed by spectroscopic and X-ray analyses.</P> <P><B>Graphical abstract</B></P> <P>[DISPLAY OMISSION]</P>
IMC–PID Approach: An Effective Way to Get an Analytical Design of Robust PID Controller
Moonyong Lee,M. Shamsuzzoha,Truong Nguyen Luan Vu 제어로봇시스템학회 2008 제어로봇시스템학회 국제학술대회 논문집 Vol.2008 No.10
In this paper, the analytical PID controller design methodology of the SISO and MIMO processes has been discussed on the basis of the IMC principle. The paper deals with two issues: firstly emphasizes on a tuning method of a SISO stable and unstable process and secondly a MIMO tuning rule. To verify the superiority of the proposed tuning method, simulation studies have been conducted on several process models. The results show that the proposed tuning method has a convincing result for wide classes of process models. The robustness analysis is also carried out by inserting a perturbation in each of the process parameters simultaneously, with the results demonstrating the better robustness of the proposed controller design with parameter uncertainty.