Abstract:
The present invention relates to an apparatus of measuring an operation load of a fast steering mirror unit for a large-aperture telescope that can simultaneously measure loads of three-axis directions applied to a tip-tilting system when the fast steering mirror unit of the large-aperture telescope is tip-tilted, and can utilize the loads to generate a track for the minimized reaction, and that can verify the correct assembled state of the fast steering mirror unit and the stabilization of its driving characteristic, and to a large-aperture telescope having the same. The apparatus of measuring the operation load of the fast steering mirror unit of the large-aperture telescope includes a support member having a lateral support for connecting a mirror cell housing and a secondary mirror provided in the large-aperture telescope to measure the loads of three-axis directions applied to the secondary mirror, with one end of the lateral support being fixed to a fastening adaptor of the mirror cell housing; a three-axis force sensor fixed to the other end of the support member; and a flexure elastic member for elastically supporting the three-axis force sensor.
Abstract:
본 발명은 대구경망원경의 고속 스티어링 미러 유닛의 외란 제거성능 측정 장치에 관한 것으로, 더욱 상세하게는 대구경 망원경에서 팁틸트 구동신호를 측정하는 구성요소를 가진하여 외란을 발생시킴으로써 고속 스티어링 미러 유닛의 고정 구조물에 대한 영향을 제거할 수 있을 뿐만 아니라, 외란 발생 장치를 간단 단순화하여 저비용으로 안정적이고 정밀한 외란을 발생시킬 수 있는 대구경망원경용 고속 스티어링 미러 유닛의 외란 제거성능 측정장치 및 이를 구비한 대구경 망원경에 관한 것이다. 본 발명에 따르면, 광학 유닛 및 팁틸트 구동하는 고속 스티어링 미러 유닛을 포함하는 대구경 망원경의 외란 제거성능 측정장치로서, 상기 고속 스티어링 미러 유닛에 반사되는 레이저빔을 입사받도록 위치되어 레이저빔의 위치를 측정하도록 구성되는 팁틸트 구동신호 측정유닛; 및 상기 팁틸트 구동신호 측정유닛을 종적 및 횡적으로 가진시켜 외란을 발생시키는 외란 발생 유닛을 포함하는 대구경 망원경용 고속 스티어링 미러 유닛의 외란 제거성능 측정장치가 제공된다.
Abstract:
PURPOSE: A weather measurement device for ultra-precision machining is provided to reduce measurement errors by reducing the influence by the external vibration. CONSTITUTION: A weather measurement device for ultra-precision machining comprises a ball(10), a probe(20), a pair of diaphragms(30), and a displacement sensor(40). The ball is touched with the surface of the measured object. One end of the probe is combined with the ball. The diaphragm is arranged from the other end of the probe. The displacement sensor is contiguous to the first diaphragm and it installs and measures the displacement of diaphragm. The displacement sensor is installed in the main body of the weather measurement device.
Abstract:
PURPOSE: A squareness error correction method using a least square method is provided to ensure precise measurement by estimating and correcting the squareness error factor of a transfer axis. CONSTITUTION: A squareness error correction method using a least square method is as follows. A plurality of measurements(Pi), which are distorted by the squareness error between the Z axis of the measuring point(200) and the X axis of a target(100) of a measuring unit, are obtained at a plurality of spots. The squareness error is estimated based on the measurements and information on a plurality of positions corresponding to each measurement, using the least square method.