• Title/Summary/Keyword: MATLAB/SIMULINK

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A New Space Vector Random Position PWM Scheme (새로운 공간벡터 Random Position PWM기법)

  • Kim, Hoe-Geun;Lim, Young-Cheol;Na, Seok-Hwan;Jung, Young-Gook
    • Proceedings of the KIEE Conference
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    • 2001.10a
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    • pp.168-174
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    • 2001
  • In this paper, a new space vector RPPWM (Random Position PWM) is proposed. In the proposed RPPWM, each of three phase pulses is located randomly in each switching interval. Based on the space vector modulation technique, the duty ratio of the pulses is calculated. Along with the randomization of the PWM pulses, we can obtain the effects of spread spectra of voltage, current as in the case of randomly changed switching frequency. To verify the validity of the proposed RPPWM, simulation study was tried using Matlab/simulink. The main model described in Simulink block diagrams includes the space vector modulation block, pulse position randomization block, inverter block, 3 phase induction motor block, and so on. By the simulation study, the harmonics of the output voltage, and the current of inverter are predicted in different PWM methods- SVPWM, LLPWM, proposed RPPWM.

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A Design Method of Three-phase IPMSM and Clamping Force Control of EMB for High-speed Train (고속철도차량의 EMB 적용을 위한 3상 IPMSM의 설계 및 제동압부력 제어)

  • Baek, Seung-Koo;Oh, Hyuck-Keun;Kwak, Min-ho;Kim, Seog-Won
    • Journal of the Korea Academia-Industrial cooperation Society
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    • v.19 no.4
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    • pp.578-585
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    • 2018
  • This paper proposes a design method for a 3-phase interior permanent magnet synchronous motor (IPMSM) and clamping force control method for an electro-mechanical brake (EMB) using co-simulation for a high-speed train (HST). A traditional pneumatic brake system needs much space for the compressor, brake reservoir, and air pipe. However, an EMB system uses up to 50% less space due to the use of a motor and electric wires for controlling the brake caliper. In addition, it can reduce the latency time for brake control because of the fast response and precise control. A train that has many brakes is advantageous for safety because of the control by sharing the braking force. In this paper, a driving method for a cam-shaft-type EMB is modeled. It is different from the ball-screw-type brakes that are widely used in automobiles. In addition, a co-simulation method is proposed using JMAG and Matlab/Simulink. The IPMSM was designed and analyzed with the JMAG tool, and the control system was simulated using Matlab/Simulink. The effectiveness of the co-simulation results of the mechanical clamping force and braking force was verified by comparison with the clamping force specifications of a HEMU-430X HST.

Model-based Design and Verification of High-lift Control System Using a Performance Analysis Model (성능해석 모델을 활용한 고양력 제어시스템의 모델기반 설계 및 검증)

  • Cho, Hyunjun;Kim, Taeju;Kim, Eunsoo;Kim, Sangbeom;Lee, Joonwon
    • Journal of Aerospace System Engineering
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    • v.16 no.2
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    • pp.49-62
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    • 2022
  • The purpose of this paper was to present a model analysis-based design process and verification results for the high-lift control system of aircraft. For this, we used Matlab/Simulink, one of the most widely-used physical modeling tools. The high-lift control system can be divided into three domains. (i.e., Electronic control domain, Hydraulic actuation domain, and Mechanical power transmission domain) Based on this division, we modeled each of the major domains and sub-components, and integrated them to complete the complicated system model. During the development process, each model block was tuned by referring to the results of pre-test and parts acceptance tests. As a result, the entire performance model and the developed system were completely verified, through unit components and system integrated performance tests. Finally, we summarize the process and results applied to the design process of high-lift control system and present future work.

The Development of a MATLAB-based Discrete Event Simulation Framework for the Engagement Simulations of the Weapon Systems (무기체계 교전 시뮬레이션을 위한 매트랩 기반 이산사건시뮬레이션 프레임워크의 개발)

  • Hwang, Kun-Chul;Lee, Min-Gyu;Kim, Jung-Hoon
    • Journal of the Korea Society for Simulation
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    • v.21 no.2
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    • pp.31-39
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    • 2012
  • Simulation Framework is a basic software tool used to develop simulation applications. This paper describes the development of a discrete event simulation framework based on DEVS(Discrete EVent System Specification) formalism, using MATLAB language which is widely used in technical computing and engineering disciplines. The newly developed framework utilizing MATLAB object oriented programming combines the convenience of MATLAB language and the sophisticated architecture of the DEVS formalism. Hence, it supports the productivity, flexibility, extensibility that are required for the simulation application software development of the weapon systems engagement. Moreover, it promises a simulation application the increased the computation speed proportional to the number of CPU of a multi-core processor, providing the batch simulation functionality based on MATLAB parallel computing technology.

Path Tracking Motion Control using Fuzzy Inference for a Parking-Assist System (퍼지 추론을 이용한 주차지원 시스템의 경로추종 운동제어)

  • Kim, Seung-Ki;Chang, Hyo-Whan;Kim, Chang-Hwan
    • Transactions of the Korean Society of Automotive Engineers
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    • v.17 no.2
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    • pp.1-9
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    • 2009
  • A parking-assist system is defined that a driver adjusts vehicle velocity through brake pedal operation and parking-assist system controls the motion of the vehicle to follow a collision-free path. In this study, a motion control algorithm using Fuzzy inference is proposed to track a maneuvering clothoid parallel path. Simulations are performed under SIMULINK environments using MATLAB and CarSim for a vehicle model. As the vehicle model in MATLAB a bicycle model is used including lateral dynamics. The simulation results show that the path tracking performance is satisfactory under various driving and initial conditions.

Actuator multiple control method for greenhouse environment control system (온실 환경 제어시스템을 위한 액추에이터 복합 제어 방법)

  • Son, Kyo-Hoon;Park, Dae-Heon;Kim, Se-Han;Kim, Jae-Hyung;Jeung, Eun-Tae
    • Journal of The Institute of Information and Telecommunication Facilities Engineering
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    • v.11 no.2
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    • pp.39-45
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    • 2012
  • In recent years the USN(Ubiquitous Sensor Networks) technology has been applied in the greenhouse in order to control temperature and humidity automatically. In this paper, we proposed a control algorithm using feedback linearization techniques based on a mathematical model for temperature and humidity environment. Especially, Control algorithm is presented to the operation of the ventilator affecting on the temperature and humidity system at the same time. The System has been designed taking into account the disturbance(External temperature, soil temperature, external humidity, solar radiation and wind). In conclusion, I will present a way to control multiple actuator through simulations. The proposed control algorithm is validated using the Matlab/Simulink tools.

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A Study of the Control System for the Manta-type UUV (만타형 UUV의 제어기 설계에 관한 연구)

  • Kim, Hyeong-Dong;Lee, Seung-Keon;Kim, Joon-Young;Kim, Si-Hong
    • Proceedings of the Korean Institute of Navigation and Port Research Conference
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    • 2010.10a
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    • pp.42-43
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    • 2010
  • In this paper, automatic control system for the Manta UUV are constructed for the diving and steering maneuver. PID controller and Fuzzy controller are adopted in this system. Based on the 6DOF dynamic equation, simulation program has been developed using the Matlab. Using this program, depth control system and heading control system with tidal current are evaluated.

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Design of SRF-PLL and FPGA Implementation using System Generator (System Generator를 이용한 SRF-PLL 설계 및 FPGA구현)

  • Bae, Hyungjin;Jo, Jongmin;An, Hyunsung;Cha, Hanju
    • Proceedings of the KIPE Conference
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    • 2016.07a
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    • pp.509-510
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    • 2016
  • 본 논문은 계통연계형 인버터의 위상추종기법인 SRF-PLL을 모델링하고, FPGA에 구현하기 위해 System Generator를 이용하여 설계하였다. SRF-PLL의 비례-적분 이득은 소신호 해석을 하여 일반화를 통해 입력전압의 크기에 관계없이 적용가능하며, 주파수 응답에서 65도 위상여유를 갖는 안정한 이득을 산정하였다. FPGA 구현을 위해 MATLAB/SIMULINK와 연동 가능한 System Generator를 이용하여 SRF-PLL을 모델링하였으며, MATLAB 기반의 시뮬레이션과 실험을 통하여 위상추종 특성을 분석하였다.

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Design of Sliding Mode Controller with Auto-tuning Method

  • He, Wei;Zhai, Yujia
    • Journal of the Korea Convergence Society
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    • v.4 no.2
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    • pp.43-50
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    • 2013
  • Sliding mode control(SMC) are carried out in this literature. And to make the controllers perform better, fuzzy logic was chosen,it makes PID controller auto-tuning parameters and reduced the chattering problem of sliding mode control. Since SMC take error and derivative of error as inputs, after comparison some results are obtained.PID controller response faster yet sliding mode control is much steadier. However certain problems cannot be ignored that the chattering phenomenal cannot be reduced entirely and this motion may hurt the machine; this project only considered a simple system, there is no guarantee PID can work as well as in this case for a much more complex system. MATLAB simulink was the main approach to obtain the performance of the two controllers: to observe the control output of the two controllers, electric circuit and special controllers are designed and tested in MATLAB.

Modeling Method of $3{\Phi}$ Phase-Controlled Rectifier in consideration of the overlap interval for DC Motor Drive (중첩구간을 고려한 DC 전동기 구동용 3상 위상제어 정류기의 모델링 기법)

  • Kim, Sang-Min;Han, Woo-Yong;Lee, Chang-Goo;Kim, Sung-Joong
    • Proceedings of the KIEE Conference
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    • 1999.07f
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    • pp.2688-2690
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    • 1999
  • This paper presents the modeling method of $3{\Phi}$ phase-controlled rectifier considering the overlap interval for the drive of DC motor in the Matlab environment. The model is constructed by the module-based method and therefore it is appropriate in the research of the closed-loop controlled power electronic system in the Matlab/Simulink environment. The model of SCR is used as the element for the power transformation. The simulation results show that the overlap interval from the effect of the input inductance is accurate.

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