Abstract:
본 발명에 따르면, 힘전달 경로 상의 기계적 요소와 고립된 유압작동유기둥의 개별 강성값의 조합을 이용하여 상기 서보구동기(2)가 갖는 무한주파수 강성을 예측 및 설계하는 단계(S210); 인장 및 압축부하 경로 상에 위치하는 단순한 기계적 형상 구동기 구성요소의 개수를 고려하여 초기 구성요소의 등가강성값을 할당하고 해석식에 의하여 구성요소의 주요 치수를 설계하는 단계(S230); 구동기 해당 구성요소에 의하여 설계된 확장 및 수축 유압격실 작동유기둥의 등가강성값을 설계하는 단계(S250); 및 설계한 기계적 구성요소들과 작동유기둥의 등가강성을 조합하여 구동기의 무한주파수 강성값을 설계하는 단계(S270);를 포함하는 제어강성 요구조건을 충족시키는 구동기 설계기법을 개시한다.
Abstract:
본 발명에 따르면, 힘전달 경로 상의 기계적 요소와 고립된 유압작동유기둥의 개별 강성값의 조합을 이용하여 상기 서보구동기(2)가 갖는 무한주파수 강성을 예측하는 무한주파수 강성 측정부; 인장 및 압축부하 경로 상에 위치하는 단순한 기계적 형상 구동기 구성요소의 개수를 고려하여 초기 구성요소의 등가강성값을 할당하고 해석식에 의하여 구성요소의 주요 치수를 설계하는 치수설계부; 구동기 해당 구성요소에 의하여 설계된 확장 및 수축 유압격실 작동유기둥의 등가강성값을 설계하는 등가강성값 설계부; 및 설계한 기계적 구성요소들과 작동유기둥의 등가강성을 조합하여 구동기의 무한주파수 강성값을 설계하는 무한주파수 강성설계부;를 포함하는 제어강성 요구조건을 충족시키는 구동기 설계시스템을 개시한다.
Abstract:
PURPOSE: A device and a method for measuring thrust are provided to accurately measure thrust even if a shaft for a thruster is not the same as a shaft for the device and to easily obtain calibration data for measuring thrust. CONSTITUTION: A device for measuring thrust comprises a thruster adapter(110), a second base(120), a measuring load cell(130), a calibrating load cell, and a controller. The thruster adapter is composed of a fixing member which fixes a thruster(200). The second base is installed in the bottom of the thruster adapter and is horizontally moved on a first base. The measuring load cell has a measuring load cell bar and a measuring adapter. The calibrating load cell gas a calibrating load cell bar(141) and a calibration adapter(143). The controller calculates and corrects an error value of the measuring load cell.
Abstract:
PURPOSE: A uniaxial simulator for a rocket posture control simulation is provided to be able to previously estimate the capacity of a control system via the simulation performed on the ground in view of various dangerous factors. CONSTITUTION: The uniaxial simulator for a rocket posture control simulation comprises: a horizontal stand(10); a thrust system located on the horizontal stand; a balancing ring(12) installed under the horizontal stand for setting the moment of inertia of a whole system, and pulling down the center of gravity; a balance member(13) installed at the side surface of the balancing ring; an air bearing system connected to the horizontal stand by using a shaft; an angular velocity sensor; a control box for controlling the operation of the trust system by comparing supplied power with input power and converting all output signals into voltage values within a desired range; a ground control box; and a real time computer system.
Abstract:
An anti-surging pneumatic valve is provided to prevent damage or malfunction of pneumatic parts in a pneumatic system due to the surge pressure produced when opening a gas storage tank containing high pressure gas. An anti-surging pneumatic valve(100) is connected to a gas storage tank in which high pressure gas is contained, and includes a body(150), a plunger(110), an elastic member(112), and an anchoring bolt(130). The body is composed of an upper body(160) and a lower body(170). The plunger is positioned in the center of a through hole formed inside the upper body and has a protruding rod(113) in the central portion. The plunger is pressed downward by surge pressure flowing into the upper body and closed onto the top of a poppet(120) so that the surge pressure is blocked from flowing into the lower body. The elastic member is inserted through the protruding rod of the plunger and has elasticity for dampen the impact resulting from the contact between the plunger and the poppet and return the plunger to the original position. The anchoring bolt connects the upper and lower bodies to fix, and supports the bottom of the poppet. The poppet is fixed to the inside surface of the through hole of the upper body and supports the bottom of the elastic member.
Abstract:
PURPOSE: A posture measurement system of a non-contact typed triaxial simulator is provided to obtain the exact position and posture information by precisely measuring the position and the posture of the triaxial simulator. CONSTITUTION: A posture measurement system contains an air bearing system, a coordinate plate(60), a camera(70) and a computer(80). The air bearing system comprises air-lift typed air bearing balls(20), a simulator(10) connected with rotation shafts(30) of the air bearing balls and a simulator support(50) to include three laser pointers(40). The coordinate plate is installed in the same direction as the rotation shafts outside the air bearing system. The camera photographs an image of the laser pointer on the coordinate plate by installing outside the air bearing system. The computer calculates the position and the posture of the simulator by using the image information from the camera.
Abstract:
본 발명에 따르면, (a) 추력 발생 축(L 1 )과 추력 측정 축(L 2 )이 평행한 상태로 추력기 어뎁터의 접합면에 추력기의 장착면을 장착하는 추력기 장착 단계; (b) 측정로드셀부의 측정어뎁터를 회전시켜 상기 측정어텝터의 일단부와 측정로드셀을 서로 접촉시키는 측정어뎁터 조절 단계; (c) 상기 측정로드셀 및 교정로드셀의 입력값을 초기화하는 입력값 초기화 단계; (d) 상기 추력기의 일측에 교정어뎁터를 고정 설치한 상태에서, 상기 교정어뎁터의 길이조절부를 단계별로 회전시켜 상기 측정로드셀 및 교정로드셀에 힘을 주입하여, 상기 측정로드셀 및 교정로드셀에 작용하는 힘값을 측정하는 힘값 측정 단계; (e) 상기 측정로드셀 및 교정로드셀에서 측정된 각 단계별 힘값을 기초로 하여, 상기 측정로드셀의 오차값을 산출 및 교정하는 오차값 산출 및 교정 단계; (f) 상기 추력기의 일측에서 교정어뎁터를 분리시킨 상태에서 상기 추력기를 가동하여, 상기 측정로드셀로 전달되는 상기 추력기의 추력을 측정하는 추력 측정 단계;를 포함하는 추력 측정 방법을 개시한다. 추력, 추력기, 베이스
Abstract:
PURPOSE: A thrust measurer of a cold gas thruster is provided to design a stable position controller by measuring the thrust and the response characteristic of the thruster. CONSTITUTION: A sliding rod(6) is connected with a horizontal support(4) by protruding from three directions of a fixing support. A thruster(20) is connected with the center of the horizontal support. The thruster is fixed on a support(21) to be connected through a rod(22). A seal(12) is connected with a calibration support(11) under the fixing support by connecting with both sides of the horizontal support. A load cell(7) is installed in the center of the fixing support. Thereby, an exact thrust is measured though the weight of the thruster is changed.
Abstract:
PURPOSE: A thrust measurer of a cold gas thruster is provided to design a stable position controller by measuring the thrust and the response characteristic of the thruster. CONSTITUTION: A sliding rod(6) is connected with a horizontal support(4) by protruding from three directions of a fixing support. A thruster(20) is connected with the center of the horizontal support. The thruster is fixed on a support(21) to be connected through a rod(22). A seal(12) is connected with a calibration support(11) under the fixing support by connecting with both sides of the horizontal support. A load cell(7) is installed in the center of the fixing support. Thereby, an exact thrust is measured though the weight of the thruster is changed.