• Title/Summary/Keyword: Internal control system

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Interleukin-5 Inhibition Assay of the Oriental Materia Medica Treatment by High Through Screening on the Splenocyte of Mouse (High through screening(HTS)를 이용한 백서(白鼠)의 비장세포(脾臟細胞)에서의 IL-5 분비 조절 한약물(韓藥物) Screening)

  • Park, Dong-Hee;Rhee, Hyung-Koo;Jung, Sung-Ki;Jung, Hee-Jae
    • The Journal of Internal Korean Medicine
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    • v.27 no.2
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    • pp.394-406
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    • 2006
  • Backgrounds and Objectives: Asthma is considered to be an inflammatory disease characterized by airway hyperresponsiveness and Pulmonary eosinophilia. And it is known the structure and function of IL-5, its receptor and the mechnism IL-5 triggered eosinophil accumulation and inflammaion of the airways. At this point of view, we assume which oriental materia medics can the splenocyte inhibit from secreting the IL-S in vitro. Material and Methosds: We used the splenocyte of mouse 8 weeks after its birth, and then cnltivated those into the 2 experimental groups and control group for 48 hours. The culture medium of experimental groups were made of $1{\mu}g/ml,\;10{\mu}g/ml$, oriental materia medics, representative. And the culture media of control group was given no oriental materia medica. Then, we assayed the quantity of cytokine-expression by the Sandwich ELISA. The quantifies of cytokine-expression of the experimental groups were compared with that of the control group which was standardized These method were used for the all of oriental materia medica treated. Results: In this study, we demonstrated that 12 oriental materia medica that inhibit the splenocyte from secreting the IL-5 in both $1{\mu}g/ml,\;and\;10{\mu}g/ml$ culture media. Those were Equiseti Herbs, Sophorae Subprostratae Radix, Moutan Radicis Cortex. Trichosanthis Radix, Buddleiae Flos. Cyperi Rhizoma. Benincasae Semen, Armeniacae Semen. Zedoariae Rhizoma, Astragali Semen, Dolichoris Semen. Lilii Bulbus, Asparagi Radix, Atractylodes Rhizoma White, Polygonati Officinallis Rhizoma. Conculusions: These findinga indicate that some oriental materia medica, specially Antipyretics, Herbs for Resolving Phlegm, Relieving Cough and Calming Wheezing and Herbs for Tonifring and Invigorating effects inhibit the splenocyte from secreting the IL-5. And further study experimented in vivo is needed for treating IL-5-driven inflammatory disease including asthma.

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Study on Process Monitoring of Elliptical Vibration Cutting by Utilizing Internal Data in Ultrasonic Elliptical Vibration Device

  • Jung, Hongjin;Hayasaka, Takehiro;Shamoto, Eiji
    • International Journal of Precision Engineering and Manufacturing-Green Technology
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    • v.5 no.5
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    • pp.571-581
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    • 2018
  • In the present study, monitoring of elliptical vibration cutting process by utilizing internal data in the ultrasonic elliptical vibration device without external sensors such as a dynamometer and displacement sensor is investigated. The internal data utilized here is the change of excitation frequency, i.e. resonant frequency of the device, voltages applied to the piezoelectric actuators composing the device, and electric currents flowing through the actuators. These internal data change automatically in the elliptical vibration control system in order to keep a constant elliptical vibration against the change of the cutting process. Correlativity between the process and the internal data is described by using a vibration model of ultrasonic elliptical vibration cutting and verified by several experiments, i.e. planing and mirror surface finishing of hardened die steel carried out with single crystalline diamond tools. As a result, it is proved that it is possible to estimate the elements of elliptical vibration cutting process, e.g. tool wear and machining load, which are important for stable cutting in such precision machining.

Experimental Studies of Neural Compensation Technique for a Fuzzy Controlled Inverted Pendulum System

  • Lee, Geun-Hyeong;Jung, Seul
    • International Journal of Fuzzy Logic and Intelligent Systems
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    • v.10 no.1
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    • pp.43-48
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    • 2010
  • This article presents the experimental studies of controlling angle and position of the inverted pendulum system using neural network to compensate for errors caused due to fuzzy controller. Although fuzzy control method can deal with nonlinearities of the system, fixed fuzzy rules may not work and result in tracking errors in some cases. First, a nominal Takagi-Sugeno (TS) type fuzzy controller with fixed weights is used for controlling the inverted pendulum system. Then the neural network is added at the reference input to form the reference compensation technique (RCT)control structure. Neural network modifies the input trajectories to improve system performances by updating internal weights in on-line fashion. The back-propagation learning algorithm for neural network is derived and used to update weights. Control hardware of a DSP 6713 board to have real time control is implemented. Experimental results of controlling inverted pendulum system are conducted and performances are compared.

The Effects of Oyo-Tang(五拗湯) on the Respiratory Patterns and Tracheal Tissues in Allergic Asthma (오요탕(五拗湯)이 알레르기 천식(喘息)의 호흡(呼吸) 양상(樣相)과 기관(氣管) 조직(組織)에 미치는 영향(影響))

  • Kwon, Soon-Ho;Jung, Hee-Jae;Jung, Sung-Ki;Rhee, Hyung-Koo
    • The Journal of Korean Medicine
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    • v.20 no.2
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    • pp.98-107
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    • 1999
  • This study aimed to find out Oyo-Tang's effects on allergic asthma using the Egg-White Implant(EWI) method model recommended by Siqueira et al. Oyo-Tang has widely been prescribed and used in Oriental Medicine for controlling and curing of cough, nasal obstruction, pharyngeal pain and hoarseness. Previous studies have demonstrated that Oyo-Tang has analgesic, sedative, anticonvulsive, antitussive and antihistamine effects. But it was uncertain whether Oyo-Tang could inhibit the allergic reactions, to alleviate the symptoms of allergic asthma. With such aim. the respiratory patterns and eosinophil infiltration in the tracheal mucosa of rats with experimentally induced allergic asthma (using EWI method) were mainly observed. The results are as follows: 1. Oyo-Tang decreased the number of poor respiration with respect to control group (P<0.05) 2. Oyo-Tang decreased the number of eosinophils infiltrated in tracheal mucosa with respect control group (P<0.05). The above results demonstrate that Oyo-Tang has the inhibitory effects on the process allergic asthma and suggest that it could be used in relieving patients of the symptoms caused allergic asthma.

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A Study on the design of operations system for managing the mobile communication network (이동통신망 관리용 운용시스템 설계에 관한 연구)

  • 하기종
    • Journal of the Korea Society for Simulation
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    • v.6 no.2
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    • pp.71-79
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    • 1997
  • In this paper, operations system was designed for the centralization of data processing of various state information from the facilities of mobile communication network. And the system performance experimental system module was measured and analyzed from the designed experimental system module. The configuration of system design was presented with the centralized type to monite and control the facilities of mobile communication network in the central office. The communication process design of the internal system was implemented with the resource of message queue having a excellent transmission ability for processing of a great quantity of information in the inter-process communication among communication resources of UNIX system. The process with a server function from the internal communication processes was constructed with a single server or a double server according to the quantity of operations and implemented with the policy of the presented server. And then, we have measured performance elements in accordance with the change of input parameters from the designed experimental module : response time, waiting time, buffer length, the maximum quantity existing in message queue. And from these results, we have compared and analyzed the system state each server algorithm according to performance variations.

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Neural Network Based Disturbance Canceler with Feedback Error Learning for Nonholonomic Mobile Robots

  • Izumi, Kiyotaka;Syam, Rafiuddin;Watanabe, Keigo;Kiguchi, Kazuo
    • Proceedings of the Korean Institute of Intelligent Systems Conference
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    • 2003.09a
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    • pp.443-446
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    • 2003
  • Conventional disturbance rejection methods have to derive the inverse model of a system. However, the inverse model of n nonholonomic system is not unique, because an inverse it changes depending on initial conditions and desired values. A kind of internal model control (IMC) using feedback error learning is discussed for the motion control of nonholonomic mobile robots in this paper, The present method is different from a conventional IMC whose control system consists of an inverse model, a direct model and a filter. The present disturbance rejection method need not use a direct model, where the remaining two elements are composed of the same inverse model based on neural networks.

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A ROBUST CONTROL OF PM SYNCHRONOUS MOTOR USING ACCELERATING TORQUE FEEDBACK

  • Kim, Hyun-Soo;Kim, Myung-Bok;Youn, Myung-Joong;Chung, Se-Kyo
    • Proceedings of the KIPE Conference
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    • 1998.10a
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    • pp.470-475
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    • 1998
  • A robust control technique is presented for a high performance control of a permanent-magnet(PM) synchronous motor. In order to deal with the internal and external disturbances of a PM synchronous motor drive system, a new feedback control structure is proposed. Since the dynamic behavior of the PM synchronous motor drive system is mainly concerned with the difference between the electro-magnetically developed torque and the load torque which generally referred to as an accelerating torque, the estimation and control techniques of this torque are introduced. The simulations and experiments are carried out for the DSP-based PM synchronous motor drive system and the results well demonstrate the effectiveness of the proposed control technique.

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Adaptive Control for Speed of Wound Rotor Induction Motor With Slip Energy Recovery

  • Tunyasrirut, Satean;Kanchanatep, Attapol;Ngamwiwit, Jongkol;Furuya, Tadayoshi
    • 제어로봇시스템학회:학술대회논문집
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    • 1998.10a
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    • pp.419-422
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    • 1998
  • This paper presents how to design speed control of wound rotor induction motors with slip energy recovery. The speed is limited at some range of sub-synchronous speed of the rotating magnetic field. The problem with speed control by adjusting resistance value in the rotor circuit reduces the efficiency of power, because of the slip energy is lost when it passes through the rotor resistance. The control system is designed to maintain efficiency of motor, where it recovers loss energy by returning it to the system to improve the efficiency. A new PI control method of adaptive control [1],[13]is applied for the system with cascade type PI controller on the main loop to keep the speed constant and the internal loop to adjust the rotor appropriated current of the load provides the good transient response without overshoot.

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MSC-based Test-case Generation Module for Railway Signaling Software Testing (철도신호 소프트웨어 테스팅을 위한 MSC 기반 테스트케이스 생성 모듈)

  • Hwang, Jong-Gyu;Baek, Jong-Hyun
    • The Transactions of the Korean Institute of Electrical Engineers P
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    • v.64 no.3
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    • pp.138-142
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    • 2015
  • Most of the existing studies on functional safety testing for the railway signaling system software have focused on verifying the functional safety through the monitoring of internal memory embedded railway signaling system. However, the railway signaling system is one of the typical embedded control system in the railway sector, and the embedded software has a characteristic of generating an appropriate outputs through the combination of internal processing in consideration of the current internal status and external input. Therefore, the test approach of using the interface communication channel can be effective way for the functional testing for railway signaling system software in consideration of these characteristic. Since a communication interface specification of the railway signal system has a the properties of the sequence input and output signals, test-case for software testing is the most effective methodology by MSC (Message Sequence Chart) language, one of the graphic language. The MSC-based test-case generating methodology for signaling system software was proposed in this paper.

Robust Torque Control of Internal Combustion Engine Using LMI Technique (수치화 최적화 기법을 이용한 내연기관의 강인한 토크 제어)

  • 김영복;양주호
    • Transactions of the Korean Society of Automotive Engineers
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    • v.5 no.4
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    • pp.100-109
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    • 1997
  • Parameters in the internal combustion engines are variable depending on the operating points. Therefore, it is necessary to compensate for the uncertainties. Form this point of view, this paper gives a controller design method and a robust stability condition by LMI approach for engine torque control which satisfies the gives H$\infty$ control performance in the presence of physical parameter perturbations. To the end, the robustness of the system in the presence of perturbation is guaranteed in the all engine operating regions. Its effectiveness is demonstrated by simulation.

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