Siemens 16 비트 마이크로 컨트롤러를 이용한 직류모터 속도제어시스템의 설계

정규홍 대진대학교 생산기술연구소 1998 생산기술연구소 논문집 Vol.1 No.-

In this paper, DC motor speed control system is designed and its control performance is tested with the Siemens C167CR-LM microcontroller which was developed recently. In that speed control system could be realized without much efforts and we can show the effectiveness and validity of the various kinds of control theory from the experiment of that system, it would be one of the good plant to investigate the characteristics of the selected controller and to get acquainted with the specific peripheral functions of the microcontroller. Hence, we explored the major functions of the C167CR microcontroller which are relevant to motor speed control system and implemented the speed detection and PI-control algorithm with the assembly language. From the experiment of the motor speed control system, we could show that many functions of the C167CR microcontroller are very useful, especially PEC in speed detection, and the overall speed control performance is acceptable.

고민하는 불난서의 정국

정규홍 대한지방행정공제회 1954 地方行政 Vol.3 No.4

임베디드 웹서버를 이용한 Synthetic Jet Actuator의 풍동실험장치 개발

정규홍 대한기계학회 2005 大韓機械學會論文集A Vol.29 No.5

IMV 비례 유량제어밸브 정특성 선형해석

정규홍 사단법인 유공압건설기계학회 2019 드라이브·컨트롤 Vol.16 No.4

Recently, as the environmental regulation for earth moving equipment has been tightened, advanced systems using electronic control have been introduced for energy savings. An IMV(Independent Metering Valve), which consists of four 2-way valves, is one of the electro-hydraulic control systems that provides more flexible controllability and potential for energy savings in excavators, when compared to the conventional 4-way spool valve system. To fully realize an IMV, a two-stage bi-directional flow control valve which can regulate the large amount of flow in both directions, should be developed in advance. A simple design that allows proportional flow control to apply the pilot pressure from the current-controlled solenoid to the spring loaded flow control spool and thus valve displacement, is proportional to the solenoid current. However, this open-loop type valve is vulnerable to flow force which directly affects the valve displacement. Force feedback servo of which the position loop is closed by the feedback spring which interconnects the solenoid valve and flow control spool, could compensate for the flow force. In this study, linearity for the solenoid current input and robustness against load pressure disturbance is investigated by linear analysis of the static nonlinear equations for the IMV proportional flow control valve with feedback spring. Gains of the linear system confirm the performance improvement with the feedback spring design.

비례제어 솔레노이드 밸브을 이용한 편로드 유압실린더의 위치제어 시스템 설계 ( Position control System Design of a Single-Rod Hydraulic Cylinder by suing Proportional PWM Solenoid Valve )

정규홍 대한기계학회 1997 대한기계학회 춘추학술대회 Vol.- No.-

자동변속기용 압력조절밸브의 성능에 관한 연구

정규홍 대진대학교 1995 大眞論叢 Vol.3 No.-

In recent years, a great deal of research efforts have been made in order to improve shift quality of automatic transmission. Hydraulic control system and TCU (Transmission Control Unit) are recognized as two major parts which have an influence upon transmission performance including shift quality, efficiency, acceleration and so on. Therefore, stability and robustness of the hydraulic control system against flow disturbance are prerequisite to accomplish a high level shift quality. This paper deals with the control performance of the pressure regulator valve in automatic transmission. The effect of variations in operating points and design parameters is investigated in terms of computer simulation for the nonlinear dynamic system.

CPLD를 이용한 3채널 PWM 신호발생기의 설계

정규홍 대진대학교 생산기술연구소 2000 생산기술연구소 논문집 Vol.3 No.-

In this research, Pulse-Width-Modulation signal generator of which carrier frequency and resolution is superior to the that of conventional peripheral functions of micro-controllers was designed with the combination of digital logic gate and 3-channels of PWM signal generators were implemented with the single Altera's EPM7128S CPLD. We established the model of digital logic circuit and verified its overall function with MAX+PLUS II software which is offered by Altera for digital logic design engineers. From the experiment of PWM signal test on the integrated hydraulic system control board, we can conclude that it works fairly good as we expected and since the speed of PLD is quite fast, there is no parallel-interfacing problem with the host micro-controller. 주요기술용어: Pulse-Width-Modulation(펄스폭 변조), CPLD(고집적 프로그래머블 논리소자)

대용량 비례 유량제어밸브 동특성 분석

정규홍 사단법인 유공압건설기계학회 2010 드라이브·컨트롤 Vol.7 No.1

Electromagnetic control valves have been used for almost 20 years. As the solenoid modulating technology advances, its applications are extending to various industrial fields such as nuclear and fossil fuel power plants, chemical plants and refineries. Proportional solenoid valve for large flow control is designed with two-stage configuration to meet the required actuating force on the main disc and its position is stabilized by the self-controlled system. In this research, main disc dynamics is analyzed with linearized system model which is derived from the mathematical equations describing its nonlinear behavior. Major design parameters of the valve control system that affect the response and stability are also studied with root locus method. The linear dynamic analysis results are verified with simulations in time-domain. 비례제어밸브는 코일에 흐르는 전류에 비례하여 발생되는 전자기력(electromagnetic force)을 이용해서 밸브를 작동시키는 구조를 갖으며, 고압 대용량의 공정유체를 제어하는 경우에는 압력과 유체 흐름에 의하여 밸브에 작용하는 외력을 보상할 수 있는 큰 구동력의 증폭을 위하여 파일럿 밸브를 이용하는 2단 밸브 형태로 설계된다. 대용량 비례유량제어밸브는 솔레노이드가 밸브에 내장되므로 공압작동밸브(air-operated valve)나 모터작동밸브(motor-operated valve)와 달리 파일럿 밸브를 작동시키기 위하여 외부와 연결되는 액추에이터가 없어 패킹이 필요 없는 밀봉된 설계와 구동부의 소형화가 가능하다는 구조적인 특징 외에 동적 작동성능이 우수하고 사용시간에 따른 성능저하가 상대적으로 작으므로 유지보수비용이 절감되는 장점으로 인하여 화력 및 원자력발전소, 정유공장에서의 긴급급수밸브 등과 같이 위급한 상황에서 작동되어야 하는 분야에 점차 적용이 확대되고 있다. 특히 비례제어밸브 제어기(positioner)는 파일럿 밸브 변위를 선형변위계로 측정하여 피드백하는 폐루프 제어시스템을 통하여 밸브의 빠른 응답성과 히스테리시스(hysteresis)가 거의 없는 정밀한 위치제어가 가능할 뿐만 아니라 마이크로 컨트롤러를 이용한 디지털 방식의 전자제어를 활용해서 전원, 센서, 솔레노이드 코일 등의 단선과 단락 등을 검출하는 자기진단기능과 디지털 통신을 이용한 원격제어 및 모니터링 기능이 구현된 스마트밸브로 개발되고 있다. 2단 비례유량제어밸브는 유체가 흐르는 유로단면적을 조절하는 기능의 메인 밸브와 메인 밸브변위를 조절하는 기능의 파일럿 밸브로 구성된다. 파일럿 밸브는 솔레노이드에서 발생되는 전자기력으로 변위가 제어되고 메인 밸브는 파일럿 밸브에 대한 상대변위에 따라 자체적으로 조절되는 제어체임버 압력에 의하여 파일럿 밸브를 추종하는 자력제어시스템(self- controlled system)의 구조를 갖는다. 따라서 메인 밸브의 응답성과 안정성은 자력제어시스템의 기계적 설계인자에 의하여 결정된다. 본 논문에서는 연구대상 대용량 비례유량제어밸브의 구조와 작동원리를 파악하였으며, 정상상태 작동특성에 대하여 수행된 연구결과를 바탕으로 자력제어시스템의 동특성을 고찰하였다. 동적해석은 비선형 수학적모델을 선형화해서 유도된 전달함수를 이용하였고 설계인자 변화에 대한 극점(pole)의 변화로부터 응답성능과 안정성을 해석하였으며 선형해석 결과는 비선형 시뮬레이션을 통하여 검증하였다.

오프로드 차량 자동변속기 자기진단 및 안전작동 기술

정규홍,Jung, Gyu Hong 유공압건설기계학회 2019 드라이브·컨트롤 Vol.16 No.3

지게차 변속제어 알고리즘 검증을 위한 임베디드 변속기 시뮬레이터 개발

정규홍 사단법인 유공압건설기계학회 2023 드라이브·컨트롤 Vol.20 No.4

A forklift is an industrial vehicle that lifts or transports heavy objects using a hydraulically operated fork, and is equipped with an automatic transmission for the convenience of repetitive transportation, loading, and unloading work. The Transmission Control Unit (TCU) is a key component in charge of the shift control function of an automatic transmission. It consists of an electric circuit with an input/output signal interface function and firmware running on a microcontroller. To develop TCU firmware, the development process of shifting algorithm design, firmware programming, verification test, and performance improvement must be repeated. A simulator is a device that simulates a mechanical system having dynamic characteristics in real time and simulates various sensor signals installed in the system. The embedded transmission simulator is a simulator that is embedded in the TCU firmware. information related to the mechanical system that is necessary for TCU normal operation. In this study, an embedded transmission simulator applied to the originally developed forklift TCU firmware was designed and used to verify various forklift shift control algorithms.