• 제목/요약/키워드: Notch Filter Tuning

검색결과 9건 처리시간 0.028초

수직 다관절 로봇의 동적 특성을 고려한 Gain Tuning 연구 (6-Axes Articulated Robot Manipulator's Gain Tuning in consideration of dynamic specific)

  • 김효곤;정원지;김기정;김규탁;서영교;이기상
    • 한국정밀공학회:학술대회논문집
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    • 한국정밀공학회 2005년도 추계학술대회 논문집
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    • pp.744-747
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    • 2005
  • This research studied 6-Axes Articulated Robot Manipulator's gain Tuning in consideration of dynamic. First of all, search fur proportional gain of velocity control loop by dynamic signal analyzer. Proportional gain of velocity control loop is connected to dynamic signal analyzer. Next Select free Proportional Gain value. And Select amplitude X of sinusoidal properly so that enough Velocity Feedback Signal may be paid as there is no group to utensil department. Next step, We can get Bode Diagram of Closed loop transfer function response examination in interested frequency. Integral calculus for gain of velocity loop is depended on integral calculus correction's number. We can obtain open loop transfer function by integrator. And we can know bode diagram's special quality from calculated open loop transfer function. With this, Velocity Control Loop's Parameter as inner loop is controlled. Next In moving, when vibration occurs, it controls notch filter. And finally, we have to control fred-forward filter parameter for elevation of control performance.

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선형 영구자석 동기전동기 구동장치의 진동억제를 위한 노치필터 자동조정 (Automatic Tuning of Notch Filter to Suppress Oscillations in a PMLSM Drive)

  • 이진우
    • 전력전자학회:학술대회논문집
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    • 전력전자학회 2007년도 하계학술대회 논문집
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    • pp.409-411
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    • 2007
  • This paper deals with an automatic tuning method of the notch filter to suppress oscillations in a permanent magnet linear synchronous motor(PMLSM) drive. First, it saves automatically the reference torque-component current when oscillations are detected. Then the oscillation frequency of the saved data is calculated by using the fast Fourier transform(FFT) algorithm. And also the Hanning function is used to reduce the leakage components due to the aperiodic measurement data. Finally, the proposed method tunes the notch filter to suppress oscillations. Experimental results on the test rig show the validity of the proposed method.

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다축 서보 시스템의 Gain Tuning에 관한 연구 (Development of Experimental Gain Tuning Technique for Multi-Axis Servo System)

  • 정원지;김효곤;서영교;이기상
    • 한국정밀공학회:학술대회논문집
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    • 한국정밀공학회 2006년도 춘계학술대회 논문집
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    • pp.271-272
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    • 2006
  • This paper presented a new experimental gain tuning technique for a Multi-Axis Servo System. First, the investigation for proportional gain of velocity control loop by using a Dynamic Signal Analyzer (DSA) was performed. Using the FUNCTION characteristic of DSA based on the Bode plot, the Bode plot of open loop transfer function was obtained. In turn, the integral gain of a servo controller can be found out by using the Integration time constant extracted from the Bode plot of open loop transfer function. In the meanwhile, the positional gain of the servo controller has been obtained by using the Bode plot of the closed loop transfer function. We have also proposed the technique to find out an optimal parameter of a notch filter, which has a great influence on vibration reduction, by using the damping factor extracted from the Bode plot of closed loop transfer function.

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광자결정 이중모드 광섬유의 음향광학 필터 특성 연구 (Widely-Tunable Single-Notch Acousto-optic Filter using Two-mode Photonic Crystal Fiber)

  • 홍기석;박현철;황인각;웨이진;주지앙;염동일;김병윤
    • 한국광학회:학술대회논문집
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    • 한국광학회 2008년도 하계학술발표회 논문집
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    • pp.139-140
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    • 2008
  • We demonstrate a novel acousto-optic filter using a two-mode photonic crystal fiber. Thanks to endless two-mode operation of the fiber, single notch over a whole spectrum is obtained with tuning range of> 1000 nm.

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A Study on the Novel Rectangular Split Ring Notch Resonators

  • Xie, Tangyao;Kim, Gi-Rae;Choi, Young-Kyu
    • Journal of information and communication convergence engineering
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    • 제8권4호
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    • pp.365-369
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    • 2010
  • In this paper, a novel notch resonator is proposed based on Rectangular Split Ring Resonator (RRSS) element. We represented the electrical characteristics for R-SRR elements coupled with microstrip line, and measured result is compared with electromagnetic simulation (HFSS) result. We also solved equivalent circuit for R-SRR element, and also discussed influences of change structural parameters of R-SRR. The size of R-SRR is the most important parameters for frequency tuning. Also we can make tunable resonator form the basic structure. This novel resonator can apply to design of tunable bandpass filter and voltage control oscillator.

사각 분리형 링 공진기의 마이크로파 전송선로 특성 연구 (A Study on Characteristics of Microwave Transmission Line of Rectangular Split Ring Resonator)

  • 김기래
    • 한국정보전자통신기술학회논문지
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    • 제3권2호
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    • pp.25-30
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    • 2010
  • 본 논문에서는 사각 분리형 링 공진기를 기본으로 하는 새로운 노치형 공진기를 제안한다. 이 공진기와 마이크로 스트립 선로가 결합된 R-SRR구조에 대해 전기적인 특성을 시뮬레이션과 측정 결과를 비교하여 나타내었다. 제안된 구조의 공진 특성으로 부터 등가회로를 나타내었고, 공진기의 구조에서 셀의 간격, 셀 사이즈, 셀의 개수 등의 변화에 대한 공진기의 공진 특성의 변화를 나타내었다. 구조적 변수 중에서 셀의 크기 요소가 공진 주파수의 가장 큰 변화 요인이다. 본 연구의 결과는 주파수 가변 대역통과 필터 설계 및 전압 제어 발진기 등의 설계에 활용할 수 있다.

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동적 특성을 고려한 6축 로봇의 서보 파라미터 튜닝에 관한 연구 (The Study of Servo-Parameter Tuning Technique for 6-Axes Articulated Robot Manipulator in Consideration of Dynamic Characteristics)

  • 정원지;김효곤;이춘만;홍대선;박승규;서영교;이기상
    • 한국공작기계학회논문집
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    • 제16권5호
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    • pp.1-6
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    • 2007
  • This paper presents a new experimental Servo-Parameter tuning technique for a 6-axes articulated robot manipulator, especially considering robot's dynamics. First of all, investigation for proportional gain of velocity control loop by using a Dynamic Signal Analyzer(DSA) is performed. Using the FUNCTION characteristic of DSA based on the Bode plot, the Bode plot of open loop transfer function can be obtained. In turn, the integral gain of a servo controller can be found out by using the integration time constant extracted from the Bode plot of open loop transfer function. In the meanwhile, the positional gain of the servo controller can be obtained by using the Bode plot of the closed loop transfer function. Using the experimental gain tuning technique proposed in this paper, the testing linear motion of DR6-II robot has been shown to be more accurate rather than the motion with a conventional(empirical) gain tuning technique in Doosan Mecatec Co., Ltd., by improving the dynamic response of the robot as well as synchronizing each joint velocity according to the positional command of an end-effector.

퍼지형 전력계통안정화제어기의 실계통 적용 및 안정도 향상 (Application of Fuzzy-PSS to KEPCO power system and stability enhancement)

  • 최경선;이동인;이광식
    • 대한전기학회:학술대회논문집
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    • 대한전기학회 1997년도 하계학술대회 논문집 D
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    • pp.1052-1055
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    • 1997
  • The importance of dynamic stability of power system is increasing as the excitation system using static type are greatly enlarged. There are several types of PSS at Present, Elements of PSS consist of Notch filter, lead-lag filter, washout limiter which are variable. The existing power system has a difficulty in determining the optimal PSS parameters whenever PSS is installed. And it is recommended to retune PSS parameters periodically because system characteristics change due to aging. In this paper, intelligent PSS using fuzzy concept is introduced to get over difficulties mentioned above. The usefulness of fuzzy-type PSS was verified by applying FPSS to KEPCO power system. Generally, the voltage regulation deteriorates if conventional PSS is applied because supplementary signal is added into AVR summing point to damp Power oscillation. In this paper this problem is solved by AVR limiter and fuzzy members tuning.

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