• 한국정밀공학회지
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• 제26권5호
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• pp.120-127
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• 2009

An electric furnace, inside which desired temperatures are kept constant by generating heat, is known to be a difficult system to control and model exactly because system parameters and response delay time vary as the temperature and position are changed. In this study the heating system of ceramic drying furnaces with time-varying parameters is mathematically modeled as a second order system and control parameters are estimated by using a RIV (Recursive Instrumental-Variable) method. A modified bang-bang control with magnitude tuning is proposed in the time optimal temperature control of ceramic drying electric furnaces and its performance is experimentally verified. It is proven that temperature tracking of adaptive time optimal control using a second order model is more stable than the GPCEW (Generalized Predictive Control with Exponential Weight) and rapidly settles down by pre-estimation of the system parameters.

• 한국소음진동공학회:학술대회논문집
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• 한국소음진동공학회 1996년도 추계학술대회논문집; 한국과학기술회관, 8 Nov. 1996
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• pp.160-165
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• 1996

Nonlinear Attitude Dynamic Equation for fleable-body satellite is drived and confirmed the effect of flexible body. GA based Fuzzy Logic Controller is designed. Also, Bang-bang controller is designed for compare the performance, Fuzzy controller chows much batter result then those by using of Bang-Bang controller.

• 대한전기학회:학술대회논문집
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• 대한전기학회 1988년도 추계학술대회 논문집 학회본부
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• pp.64-67
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• 1988

This paper proposes a algorithm to obtain a time-varing system parameters for the optimal controller. The proposed algorithm is enlarged from tile optimal sorting algorithm. It applies to Bang-Bang control and compares with CGD Method. We confirm that the proposed algorithm is excellent.

• 한국의사학회지
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• 제17권2호
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• pp.111-127
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• 2004

This paper is mainly on the rsearch of the prescriptions of "Sanbeon-bang(刪 繁方)". For the research of prescription, investigated "Sanbeon-bang" from the side of symptoms of a disease, number of drugstuffs, table of contents, drugstuffs and acupuncture and moxibustion. With these investigation, made out a few tables, and with these tables made an attempt to understand the whole prescriptions of "Sanbeon-bang". "Sanbeon-bang" is of rich contents in internal medicine. Among internal medicine, related to Oro-Yukgeuk-Chilsang(五勞-六極-七傷) was most abundant. So we can guess "Sanbeon-bang" was a medical book specialized in exhaustion syndromes. It also deals with the Samcho-syndromes, as investigate from medical comments, has the perfect system of prescription in relative. From the investigation of the combination of drugstuffs, ascertained that, the number of simple prescription composed of one drugstuff was 38, combinational prescription composed of two drugstuffs was 9, minor prescription composed of three to five drugstuffs was 47, midum prescription composed of six to ten drugstuffs was 95, major prescription composed of eleven to twenty drugstuffs was 45, and mixed prescription composed over twenty drugstuffs was 1. Mentionable unique prescriptions in internal use were the forms of keeping in mouth. In external use they were fumigants, suppositories, powdered medicines, spraying the granular medication into the nasal cavity and eyedrops. And were abundant in soft extract(ointment) and plaster. In addition, there were the recordings of 18 types of cellulitis, types of incurable cellulitis and curing an illness by a charm. By the way, when comparing "Sanbeon-bang" with "Cheongeum-bang", all of which was quoted a lot in "Oedaebiyo-bang", "Cheongeum-bang" rather took medical comments of "Sanbeon-bang" than prescription. Although there were some prescriptons in "Sanbeon-bang" at the same category, "Cheongeum-bang" took another prescriptions which are more complexed than those of "Sanbeon-bang". In the same way, when comparing "Cheongeum-bang" with "Sonjinin-Cheongeum-bang(孫眞人千金方)", which didn't go through the correction of GyojeongUiseoguk of Bug-Song goverment, "Cheongeum-bang" often didn't take the prescriptions of "Sonjinin-Cheongeum-bang". Hence we can guess, "Cheongeumyo-bang" may have added a lot of prescriptions when undergoing the correction of of GyojeongUiseoguk. The total number of species of drugstuffs in "Sanbeon-bang" from the investigation was 284. The plant drugs were 208 species, the animal were 31 species, the minerals were 19 species and the other were 26 species. The prescriptions related to acupuncture and moxibustion in "Sanbeon-bang" were only moxibustional prescriptions. Which appeared one time per exhaustion and steaming of bone syndrome, Oro-Yukgeuk-Chilsang and Samcho syndrome. Appeared six times in muscle syndromes. But I cannot imagine the original form of acupuncture and moxibustion in "Sanbeon-bang" for deficiency of data.

• 제어로봇시스템학회:학술대회논문집
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• 제어로봇시스템학회 1997년도 한국자동제어학술회의논문집; 한국전력공사 서울연수원; 17-18 Oct. 1997
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• pp.280-284
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• 1997

In this paper, Nonlinear VSS control based on bang-bang control concept is derived under the assumption that the control input is bounded. We try to derive control algorithm which has almost same performance as the time optimal control. We focus this control scheme on the real implementation of DC motor position controller of flexible link, i.e. we obtain the switching curves from the real data of DC motor system operating under the full maximum and minimum applied voltages. State space is separated into several regions and we set different switching surfaces in each region to reduce chattering problem. The efficiency of the proposed controller is compared with PID controller and it is shown that the controller converges fast than PID controller without chattering. The hybrid controller scheme is also proposed not only to control the position of hub but also to reduce the vibration of end tip of flexible link.

• KIEE International Transaction on Electrical Machinery and Energy Conversion Systems
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• 제5B권1호
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• pp.63-69
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• 2005

The motion of animals and gymnasts in the air as well as free flying space robots without thrusters are subjected to nonholonomic constraints generated by the law of conservation of angular momentum. The purpose of this paper is to derive analytical posture control laws for free flying objects in the air. We propose the bang-bang control method for trajectory planning of a 3 link mechanical system with initial angular momentum. This technique is used to reduce the DOF (degrees of freedom) at first switching phase and to determine the control inputs to steer the reduced order system to the desired position. Computer simulations for motion planning of an athlete approximated by 3 link, namely platform diving, are provided to verify the effectiveness of the proposed control scheme.

• 대한전기학회논문지
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• 제33권3호
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• pp.91-99
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• 1984

Time-optimal control for dmping a one-dimensional xenon-induced spatial power oscillations in pressurized water reactor is studied. Linearized system equations describing the spatial xenon oscillations have been derived based on lambda mode analysis. Optimal control strategies, eventually bang-bang controls, have been drawn applying Pontryagins Minimum Principle, subject to a band constraint on available contros strength. Validity of the linearized system equations and optimal control strategies derived has been demonstrated through conputer simulations which incorporate the finite difference method for one dimensional axial geometry, for the soulution of the two-group neutron diffusion equations. The results obtained through computer simulations show that xenon-induced transients can be suppressed successfully with bang-bang control.

• 대한한방소아과학회지
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• 제24권1호
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• pp.65-76
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• 2010

Objectives In the later period of Choseon dynasty, korean pediatrics became a pivot part of medicine. SoAUiBang was the most important book in that era. DongEuiBoGam was the most widely read of all oriental medicine books and published in early days of the Choseon dynasty. Therefore, this comparative study on the prescription and formation of SoAUiBang and DongEuiBoGam could be a useful way to understand SoAUiBang's characteristics. Methods This study was based on SoAUiBang and DongEuiBoGam, two literatures of oriental medicine. Results 1. Formation of SoAUiBang had a similar aspect with that of DongEuiBoGam's and enlarged the area of pediatrics by featuring general medical books. However, its formation did not follow the DongEuiBoGam's, but had its unique formation. It tried to include all diseases of pediatrics in the system of DongEuiBoGam. Plus, smallpox and measles belonged to the epidemic diseases were excluded from the area of pediatrics. 2. Comparing SoAUiBang's prescription of some important diseases with DongEuiBoGam's, it was almost a prescription based on DongEuiBoGam's prescription. However, adjustment of herbs and dosages could not be found in any oriental medicine books including DongEuiBoGam. Conclusions SoAUiBang maintained the traditional Oriental medicine based on author's scholarly creativeness. In addition, it also inherited the lineage of medicine in Korea along with the pedigree of DongEuiBoGam. Therefore, SoAUiBang should be re-evaluated as a medicine book that opened a new field of pediatric and had great academic values.

• 혜화의학회지
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• 제15권2호
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• pp.211-230
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• 2006

In oriental medicine, Zingiberis Rhizoma Recens & Jujubae Fructus are frequently used materials for the digestive system, outer harmful qi(外感) and dam-yeum(痰飮). Bang-Yak-Hap-Pyun(方藥合編) is widely used for clinical herbal prescription book. In Bang-Yak-Hap-Pyun(方藥合編), Zingiberis Rhizoma Recens is used 3pyun(片)(4g) and Jujubae Fructus is used 2mae(4g). The most important fact is that, in contrast to most people know that chyranthis Bidentatae Radix & Jujubae Fructus are used most prescription at the same time, the prescription used chyranthis Bidentatae Radix & Jujubae Fructus at the same time is merely 77. (Bang-Yak-Hap-Pyun percentage of Zingiberis Rhizoma Recens & Jujubae Fructus is 16.48%). The number of prescription Zingiberis Rhizoma Recens & Jujubae Fructus in Bang-Yak-Hap-Pyun is total 173. 42 in sang-tong(上統), 86 in jung-tong(中統), 45 in ha-tong(下統). The group of mostly used disease is about outer harmful qi(外感) and dam-yeum(痰飮). The ratio of Zingiberis Rhizoma Recens in Bang-Yak-Hap-Pyun is 3.70%~100%. And the ratio of Jujubae Fructus is 0.45%~29.14%. The mostly quoted medical literature what prescription included Zingiberis Rhizoma Recens & Jujubae Fructus in Bang-Yak-Hap-Pyun is Tae-Pypng-Ha-Jae-Guk-Bang.

• 대한한의학방제학회지
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• 제14권1호
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• pp.201-203
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• 2006

There are people. however, who do not understand what science means, especially among those practicing Oriental Medicine. They associate science with machines and consider that science is something not applicable to Oriental Medicine because Medicine is for humans not for machines. Science is a system of knowledge of universal facts and laws obtained based on objectivity, which under the same conditions gives the same results no matter when, where and how it is done and no matter who does it. To achieve development of that level, knowledge and technology from all areas should be considered and, if found useful, should be accepted. The immediate hurdle is to make Bang-Jae Science understood. So far Bang-Jae Discipline as understood by the practitioners of Oriental Medicine is nothing more than selecting prescriptions inherited from the predecessors that match given symptoms. To make Bang-Jae Discipline a science. i.e. Bang-Jae Science, we should not only study the traditional literature to gather data, experiment and verify with them one after another. make them objective and carry our scientific systemization. It takes fresh and creative trials but it will surely contribute to the future medical science.