• 제목/요약/키워드: Dynamically Tuned Gyroscope

검색결과 16건 처리시간 0.026초

A Digitized Decoupled Dual-axis Micro Dynamically Tuned Gyroscope with Three Equilibrium Rings

  • Xia, Dunzhu;Ni, Peizhen;Kong, Lun
    • Journal of Electrical Engineering and Technology
    • /
    • 제12권1호
    • /
    • pp.385-395
    • /
    • 2017
  • A new digitized decoupled dual-axis micro dynamically tuned gyroscope with three equilibrium rings (TMDTG) is proposed which can eliminate the constant torque disturbance (CTD) caused by the double rotation frequency of a driving shaft with a micro dynamically tuned gyroscope with one equilibrium ring (MDTG). A mechanical and kinematic model of the TMDTG is theoretically analyzed and the structure parameters are optimized in ANSYS to demonstrate reliability. By adjusting the thickness of each equilibrium ring, the CTD can be eliminated. The digitized model of the TMDTG system is then simulated and examined using MATLAB. Finally, a digitized prototype based on FPGA is created. The gyroscope can be dynamically tuned by adjusting feedback voltage. Experimental results show the TMDTG has good performance with a scale factor of $283LSB/^{\circ}/s$ in X-axis and $220LSB/^{\circ}/s$ in Y-axis, respectively. The scale factor non-linearity is 0.09% in X-axis and 0.13% in Y-axis. Results from analytical models, simulations, and experiments demonstrate the feasibility of the proposed TMDTG.

EOTS에서의 동조자이노스코프의 동작모드에 따른 특성비교 (Characteristics comparison according to operating mode of dynamically tuned gyroscope in the electro-optical tracking system)

  • 임성운;마진석;권우현
    • 제어로봇시스템학회논문지
    • /
    • 제3권3호
    • /
    • pp.311-317
    • /
    • 1997
  • DTG(dynamically tuned gyroscope) is a sensor detecting disturbance in angle velocity control loop of EOTS(electro optical tracking system), which is used for the stabilization of gimbal. DTG is classified into rate mode or rate integrated mode according to operating mode. In this paper, basic principles and characteristics of DTG, depending on to operating mode, are compared and the model of rate integrated mode DTG is proposed. Also, the validity of the presented model is verified by computer simulations and experiments.

  • PDF

동조자이로스코프의 기계부 오차 해석 및 동적밸런싱 (Error Aalysis of Mechanical Parts and Dynamic Balancing in A Dynamically Tuned Gyroscope)

  • J.O. Young;C.G. Ahn;Lee, J.M.
    • 한국정밀공학회지
    • /
    • 제14권2호
    • /
    • pp.13-22
    • /
    • 1997
  • Strapdown inertial navigation system(SDINS) is a navigational instruments necessary to guide and con- trol a free vehicle. In this study, an error analysis of mechanical parts is carried out for manufacturing a dynamically tuned gyroscope. The errors usually come from the tolerance in machining and assembly. In the error analysis, a criterion to be considered during designing and manufacturing is proposed by quanti- tatively analyzing the effect of DTG performance by tolerances. The theory of dynamic balancing is deduced and unbalance is reduced through experiment.

  • PDF

DTG (Dynamically Tuned Gyroscope) 설계 및 제작 (Design and fabrication of a dynamically tuned gyroscope)

  • 이장규;이장무;김원찬;이동녕
    • 제어로봇시스템학회:학술대회논문집
    • /
    • 제어로봇시스템학회 1987년도 한국자동제어학술회의논문집; 한국과학기술대학, 충남; 16-17 Oct. 1987
    • /
    • pp.519-521
    • /
    • 1987
  • Among the gyroscopes used for SDINS, the dynamically turned gyroscope (DTG) covers a wide dynamic range while it is simple and small. In addition, it is a two-degree-of freedom gyro; it can detect two-axis input simultaneously. DTG, since its development in 1970's, is widely accepted for strapdown inertial systems. In the first year, we have concentrated on developing a two degree-of-freedom DIG. An interdisciplinary research team has been formed to accomplish the first year objective. Five departments in the College of Engineering, Seoul National University are involved. They are; 1) Department of Control and Instrumentation, 2) Department of Mechanical Design and Production, 3) Department of Electrical Engineering, 4) Department of Electronic Engineering, and 5) Department of Metallurgical Engineering. In addition, the Department of Precision Mechanical Engineering of Pusan National University is subcontracted to develop a test procedure for gyroscope and SDINS. Gyroscope is a key sensor for SDINS. Furthermore gyroscope itself is used as a. independent sensor for vehicle guidance and control and fire control system. Gyroscope and SDINS are an important for defense, aeronautical, and space industries that Korea is and will be actively involved. Upon the success of the project, they are expected to be manufactured in Korea under a cooperative effort between university and industry.

  • PDF

주파수 가중 H$_2$ 제어기를 이용한 동조자이로스코프의 디지털 재평형루프 설계 (Digital Rebalance Loop Design for a Dynamically Tuned Gyroscope using Frequency Weighted H$_2$ Controller)

  • 송진우;이장규;강태삼
    • 대한전기학회논문지:전력기술부문A
    • /
    • 제48권9호
    • /
    • pp.1131-1139
    • /
    • 1999
  • In this paper, we present a wide-bandwidth digital rebalance loop for a dynamically tuned gyroscope(DTG) based on {{{{ { H}_{2 } }}}} methodology. The operational principle and the importance of a rebalance loop are explaind, first. The augmented plant model is constructed, which includes a gyroscope model and an integrator. An {{{{ { H}_{ 2} }}}} based controller is designed for the augmented plant model. To verify the performance of the controller, a digital rebalance loop for a DTG is designed, fabricated and experimented. Through frequency response analyses and experiments using a real DTG, it is confirmed that the controller is more robustly stable and has a wider bandwidth compared with those of a conventional PID controller, contributing to the performance improvement of a DTG.

  • PDF

동조자이로스코프의 해석 및 응용 (전자광학추적기의 회전각속도 센서) (Analysis and application of the dynamically tuned gyroscope (Angular velocity sensor of EOTS))

  • 임성운
    • 센서학회지
    • /
    • 제5권4호
    • /
    • pp.47-56
    • /
    • 1996
  • 속도제어루프내에서 외란의 각속도를 감지하여 짐발을 안정화시키기 위해 사용하는 동조자이로스코프에 대한 기본원리 및 특성을 분석하였다. 또한 비례모드 자이로스코프의 모델을 정확하게 제시하였으며, 제시된 모델은 공진 특성을 가지고 있기 때문에 기존에 사용하고 있는 2차 시스템 모델보다 실제 시스템의 특성과 유사하므로 일반적인 비례모드 자이로스코프에서도 적용 가능하다. 실제 시스템인 전자광학추적기에 사용할 경우 발생되는 문제점을 알아보고 그 해결 방안을 제시하였다.

  • PDF

동조 자이로스코프 서스펜션의 굽힘자 해석 및 시험 (Analysis of flexure stiffness and stiffness test in DTG)

  • Youn, J.O.;Kim, J.H.;Lee, J.G.
    • 한국정밀공학회지
    • /
    • 제13권5호
    • /
    • pp.30-37
    • /
    • 1996
  • The objective of this research is to explore the analysis and test method for the reliable design and fabrication of a high precision dynamically tuned gyroscope. The tuning frequency is decided by the calculation of mass moment of inertia of rotor and gimbal and the stiffness of flexures. Due to the complex geometry of the flexure, calculation of the stiffness of the suspension flexure is difficult. In this paper, three analytical methods for obtaining the stiffness of the flexure are porposed and a special testing method is used for checking the accuracy of the computed results.

  • PDF

동조자이로스코우프 기계부의 제작 및 해석에 관한 연구 (A Study on the Fabrication and Analysis of Mechanical Parts of a Dynamically Tuned Gyroscope)

  • 안창기;윤종욱;이장무
    • 한국정밀공학회:학술대회논문집
    • /
    • 한국정밀공학회 1994년도 추계학술대회 논문집
    • /
    • pp.930-937
    • /
    • 1994
  • Straodown intertial navigation system(SDINS) is a navigational instrument necessary to guide and control a free vehicle. Dynamically Tuned Gyroscope(DTG) which is widely applied to SDINS convers a wide dynamic range and is simple and small. In study, the analysis of mechanical parts or sensor parts and research of balancing is performed for manufacturing a DTG. In error analysis the criterion considered during designing and manufacturing is established by quantitatively anayzing the effect of DTG performance by tolerance. And the theory of dynamic balancing is derived and unbalance is reduced through experiment. And the stiffness of flexure is verified by tuning experiment.

  • PDF

직렬 공진형 콘버터의 새로운 제어방 (The Rebalance Loop Design with an Input Compensator for a Dynamically Tuned Gyroscope)

  • 정규범;이춘택;조규형
    • 대한전기학회논문지
    • /
    • 제38권2호
    • /
    • pp.119-126
    • /
    • 1989
  • In this paper, a new technique, which uses an "input compensator", is proposed to design a controller for the rebalance loop of a Dynamically Tuned Gyroscope (DTG) and the performance of this new controller is compared with that of a Proportional and Integral (PI) controller through simulation. The rebalance loop is an essential part of a DTG` it is composed of a controller, low-pass filters, notch filters and torque drivers. Among them, the controller is the main attributor to determine the performance of the rebalance loop. Through simulation, it is concluded that the performance of the newly designed controller is better than that of a PI controller in the point of (1) low maximum overshoot, (2) short settling time and (3) small steady state error.

계수 추정 기법을 이용한 동조자이로스코프 온도 제어기의 설계 (Design of the Temperature Controller for a Dynamically Tuned Gyroscope Using Parameter Estimation Methods)

  • 송진우;이장규;강태삼;김진원
    • 대한전기학회:학술대회논문집
    • /
    • 대한전기학회 1996년도 하계학술대회 논문집 B
    • /
    • pp.1146-1148
    • /
    • 1996
  • In this paper, uncertain parameters of the heat transfer model of a Dynamically Tuned Gyroscope (DTG) are estimated by the Recursive Least Squares (RLS) method. Also, using this model, a temperature controller for a DTG is designed. As the temperature controller, a PI controller is used. It is presented that a controller can be easily designed when the heat transfer model of a DTG is used. By simulations and experiments, it is shown that the estimated heat transfer model is appropriate and the desired performance of the temperature controller is satisfied.

  • PDF