• Journal of the Institute of Electronics and Information Engineers
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• v.51 no.11
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• pp.211-220
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• 2014

In this paper a full FPGA-based and compact motor-control system is shown that makes it easy to control the motor and analyze the result data in real time with embedding not only a DC motor controller but also a TFT LCD interface in a single FPGA. Both a PID speed control module for a DC motor and a monitoring module for plotting real time graphs on to a TFT LCD are designed in a single FPGA, and the system validity is shown through simulation and experimental results. The FPGA used is xc3s400 and the entire system is designed by using the AD (Altium Designer). A PWM motor drive system is constructed by using MOSFETs for a DC motor 4-quadrant operations.

• Proceedings of the Korea Information Processing Society Conference
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• 2019.05a
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• pp.339-341
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• 2019

본 논문에서는 바퀴형 이동 로봇의 모터제어에 대하여 연구하였다. 로봇의 안정적인 주행을 위하여 PID 제어에 대한 이론을 연구하고 Imu sensor와 Hall sensor를 이용한 자세 및 속도 제어방법을 제시한다.

• Proceedings of the KIPE Conference
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• 2010.11a
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• pp.294-295
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• 2010

DC 모터의 전류 제어는 회전에 의해 발생하는 역기전력을 외란으로 취급하여 역기전력을 보상하는 방법이 많이 사용된다. 본 논문에서는 속도 센서를 사용할 수 없는 모터 응용 분야에서 상태 관측기를 사용하여 전류 제어기를 구성하는 문제를 다룬다. 제안된 관측기는 간단한 1차 모델에 대한 PI 관측기로 설계되며 역기전력을 추정하는 형태로 구성된다. 실험을 통해 제안한 관측기가 1차 모델만을 고려하여 설계되었음에도 DC 모터의 불확실성에 강인한 성능을 보임을 확인한다.

• Journal of the Korea Institute of Information and Communication Engineering
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• v.9 no.8
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• pp.1840-1846
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• 2005

In this paper, does by purpose DC servo motor speed controller design about PID coefficient tuning techniques that use genetic algerian. DC servo motor is used in application field of a peat many control machine or robot etc. and in this field, selection of controller parameters requires user's expert knowledge. Therefore, general amount of work engineers must continuously iteration tuning in controller parameters by trial and error. With this, when must tuning parameter coefficient about change of dynamic system or disturbance, can improve the efficiency according to following that is more precised and parameter coefficient value that is optimized by using genetic algorithm. In this paper, from dynamic character modeling get in analyze dynamic character of DC motor desist controller drive control possible that is fast response character md improved speed precision using a Genetic Algorithms.

• Journal of the Korean Institute of Intelligent Systems
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• v.25 no.1
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• pp.7-14
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• 2015

To implement an automatic picking system (APS) in distribution center with high precision and high dynamics, this paper presents a high gain observer-based robust speed controller design for a linear induction motor (LIM) drive. The force disturbance as well as the mechanical parameter variations such as the mass and friction coefficient gives a direct influence on the speed control performance of APS. To guarantee a robust control performance, the system uncertainty caused by the force disturbance and mechanical parameter variations is estimated through a high gain disturbance observer and compensated by a feedforward manner. While a time-varying disturbance due to the mass variation can not be effectively compensated by using the conventional disturbance observer, the proposed scheme shows a robust performance in the presence of such uncertainty. A Simulink library has been developed for the LIM model from the state equation. Through comparative simulations based on Matlab - Simulink, it is proved that the proposed scheme has a robust control nature and is most suitable for APS.

• Journal of Institute of Control, Robotics and Systems
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• v.4 no.1
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• pp.134-140
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• 1998

포항제철 2열연공장의 사상압연에 사용되고 있는 DC 모터를 가지는 열간압연 구동기에 대한 견실 H/sup .inf./ 속도제어기 설계방법을 제안한다. 기존에는 PI 재어기법을 이용하여 속도를 제어하고 있으므로 불확실성과 외란등이 존재할 경우 양호한 제어 성능을 얻기 힘들다. 이를 해결하기 위해 주파수 하중 함수를 가지는 혼합감도최소화 문제를 설정하여 견실성을 보장하는 H/sup .inf./ 속도제어기를 설계한다. 이때 주파수 하중함수는 루프쉐이핑기법을 이용하여 주어진 구동기 플랜트에 적합하도록 선택한다. H/sup .inf./ 속도제어기 설계는 Pasek이 제시한 DC 모터의 모델링 방법에 의해 얻어진 모델을 포함하는 구동기 모델에서 속도제어기 부분을 제외한 모델을 대상으로 한다. 제안한 견실 속도제어기 설계방법은 파라미터 변화나 부하토크 변동 등의 외란에 대하여 폐루프 시스템의 견실안정성과 원하는 속도에 좋은 추적 성능을 보인다. 제어 대상인 포항제철 2열연공장의 열간압연 구동기에 대한 시뮬레이션을 통해 기준속도 추적성, 응답속도, 불확실성과 외란에 대한 견실성 등의 성능에 기존의 PI 속도제어기보다 양호함을 확인함으로써 제안한 견실 H/sup .inf./ 속도제어기 설계 방법의 타당성을 보인다.

• Aerospace Engineering and Technology
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• v.7 no.2
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• pp.162-169
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• 2008

Dynamic characteristics of a control valve, which plays an important role in thrust control of liquid rocket engines, have been analysed by AMESim simulator modeling. A speed control method has been proposed for the control of the valve equipped with a BLDC motor and the performances of this control method have been proved in making a comparison between the predictions of simulation and experimental results. Moreover, it is shown that a control valve with a second pre-filter is enough stable to the flow disturbances. The speed control method for BLDC motor is more simpler than PI gain scheduling method for the application in complex flow system.

• Proceedings of the KOSOMBE Conference
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• v.1995 no.05
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• pp.78-81
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• 1995

본 연구에서는 슬라이딩 모드를 전기유압식 심실보조기의 직류모터제어기의 속도와 위치제어에 적용하였다. 슬라이딩 모드 컨트롤은 가변구조시스템(varaiable sturucture system)의 일종으로 적절한 내부스위칭 논리를 갖는 연속적인 부시스템(subsystem)의 모임으로 구성된다는 접에서 고정된 제어구조를 갖는 일반적인 제어시스템과 다르다. 이 시스템은 불연속적인 동적시스템이나 시변적인 요소를 갖는 시스템등에서 사용되고 있다. 이 논문에서는 슬라이딩 모드 제어를 적용하여 좌심실보조기를 제어하는 경우에 넓은 작동범위에서도 시스템이 안정적이며 혈류역학적인 외란에 대해서도 기준입력에 대한 속도의 추종이 잘 이루어지는지의 여부를 실제의 구현에 앞서 컴퓨터모델을 통해 검증하고 문제점들을 조사하였다.

• Journal of the Korean Institute of Intelligent Systems
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• v.22 no.3
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• pp.361-366
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• 2012

This paper presents speed control of an electric motorcycle using a fuzzy controller. The electric motorcycle required to meet not only fast throttle response but also stability, when it is on a cruise. However, a 1.5KW (50cc) electric motorcycles selling in the current market are difficult to cruise under the following conditions which are occupant's weight, load weight, wind resistance and road conditions (dirt roads, asphalt road). Because of these reasons, the rapid speed changing occurs in uphill and downhill road. To solve these problems, The input value for Improved fuzzy controller use the speed error and error variance. The output value for improved fuzzy controller uses Q-axis of the motor controlled variable. The D-axis of the motor output for improved fuzzy control uses D-axis controlled variable in proportional to Q-axis controlled variable. Improved fuzzy controller drives the electric motorcycle equipped with IPMSM. The control subject used in this paper is a 1.5KW electric motorcycle equipped with improved fuzzy controller that was used to control the motor speed. To control IPMSM Type of motor torque, D, Q-axis current controller was used. The Fuzzy controller using the proposed algorithm is demonstrated by experimental hardware simulator.

• Journal of the Korean Institute of Intelligent Systems
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• v.23 no.4
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• pp.281-285
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• 2013

In this paper, a design scheme of a cruise control system for an electric vehicle using piece-wised PD control is proposed. Cruise control of electric vehicles is one of the major performance elements. Drive motors having linear characteristics ideally is required in order to achieve the cruise driving. But practical motors have nonlinear characteristics and the performance of the motors can be improved by the closed-loop control to compensate it. In this paper, we improved the performance of by applying piece-wised PD control because the driving motors having nonlinear characteristics are difficult to obtain adequate performance only using closed-loop control. In order to test the proposed method, the experiments were carried out by applying the proposed method after setting up an electric vehicle equiped with a driving motors having large nonlinear characteristics. The experiment results of the proposed piece-wised PD control shows better performance than that of closed-loop control.