Azimuth benchmark transmission device for inertia measuring device and azimuth confirming method for inertia measuring device with large inclination angle
A technique of inertial measurement device and reference transmission, which is applied in the direction of measuring device, navigation through speed/acceleration measurement, instruments, etc., can solve the problems of increasing the manufacturing cost of inertial measurement device, finding azimuth error, etc., so as to increase the scope of application, eliminate Error and method error, cost reduction effect
Active Publication Date: 2014-04-30
XIAN AEROSPACE PRECISION ELECTROMECHANICAL INST
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[0010] In order to solve the technical problems of increasing the manufacturing cost of inertial measurement devices and finding errors in azimuth angles in existing methods, the purpose of this invention is to provide an azimuth reference transmission device for inertial measurement devices and a method for determining azimuth at large inclination angles. The device and method can be used for detecting Orientation accuracy of IMUs or transfer of externally measured azimuth reference information to IMUs
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[0052] like figure 1 As shown, an inertial measurement device azimuth reference transmission device includes structural tooling, rectangular prism components and supporting fasteners; a three-dimensional coordinate system Xb, Yb, Zb is established on the structural tooling, and the origin of the three-dimensional coordinate system is on the structural tooling , the structural tooling includes a square column body 4; the two sides of the structural tooling are provided with mutually perpendicular datum planes, one of which is parallel to the plane formed by the longitudinal axis Xb and the horizontal axis Zb, and the other datum plane is parallel to the plane formed by the horizontal axis Zb and the plane formed by the vertical axis Yb are parallel; (that is, the side opposite to the right-angle prism.) The right-angle prism assembly includes a prism tooling 2 and a right-angle prism 1; and the plane formed by the longitudinal axis Xb are parallel; the rectangular prism 1 is fi...
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The invention relates to an azimuth benchmark transmission device for an inertia measuring device and an azimuth confirming method for an inertia measuring device with a large inclination angle. The azimuth benchmark transmission device comprises a structural tool, a right-angle prism component and an fitting fastener; a three-dimensional coordinate system is established by adopting a certain point on the structural tool as an original point, wherein Xb refers to a longitudinal axis, Yb refers to a vertical axis and Zb refers to a latitudinal axis; the structural tool comprises a square columnar body and two waist-shaped holes formed in two ends of the square columnar body respectively; the axial direction of the waist-shaped holes is parallel to the longitudinal axis Xb; a first benchmark plane and a second benchmark plane which are perpendicular are arranged on two side surfaces on the structural tool; the first benchmark plane is parallel to a plane formed by the longitudinal axis Xb and the latitudinal axis Zb; the second benchmark plane is parallel to a plane formed by the latitudinal axis Zb and the vertical axis Yb and opposite to a prism. The azimuth benchmark transmission device and the method solve the technical problems in conventional methods that the manufacture cost of the inertia measuring devices is increased, and errors exist in azimuthal angle seeking. The device and the method provided by the invention can detect the azimuthal accuracy of the inertial measuring device and transmit externally-measured azimuth benchmark information to the inertial measuring device.
Description
technical field [0001] The invention relates to an azimuth reference transmission device of an inertial measurement device and a method for determining azimuth at a large inclination angle. Background technique [0002] In order to detect the orientation accuracy of the inertial measurement device or transmit the orientation reference information of the external measurement to the inertial measurement device, the traditional method is to embed a right-angle prism assembly on each set of products, and adjust the right-angle prism assembly to be parallel to the body coordinate system of the inertial measurement device. The inertial measurement device is required to be placed approximately horizontally, and a high-precision gyro north indicator is erected at a long distance. After adjusting the alignment of the photoelectric theodolite and the inertial measurement device, start north-seeking, and use the north-finding result of the gyro north indicator directly or after approxim...
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IPC IPC(8): G01C25/00G01C21/16
CPCG01C19/34G01C21/16G01C25/005
Inventor 王朝光谢波杨朋军江文欣李汉舟
Owner XIAN AEROSPACE PRECISION ELECTROMECHANICAL INST