A Precise Static Balance Trimming Method for Pitching Axis of Large-scale Photoelectric Theodolite
A technology of photoelectric theodolite and pitch axis, applied in the field of photoelectric theodolite for imaging and measurement, and precision tracking and aiming, can solve the problems of time-consuming, difficulty in ensuring trim accuracy, and 3D modeling is difficult to meet the needs of engineering practice, so as to improve calculation accuracy, avoid damage effect
Active Publication Date: 2020-12-25
XI'AN INST OF OPTICS & FINE MECHANICS - CHINESE ACAD OF SCI
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[0007] In order to solve the technical problems that the existing manual trimming method is time-consuming and difficult to ensure the trimming accuracy, and the trimming by three-dimensional modeling is difficult to meet the needs of actual engineering practice, the present invention provides a precision static balancing trimming of the pitch axis of a large-scale photoelectric theodolite method
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[0047] The present invention will be further described below in conjunction with accompanying drawing.
[0048] 1. Composition of photoelectric theodolite pitch axis static balance trim system
[0049] Such as figure 1 As shown, the existing photoelectric theodolite pitch axis servo control system consists of a pitch shaft system and a bearing (not shown in the figure), a pitch axis motor, a high-precision angle sensor, and a high-precision angular velocity sensor (some photoelectric theodolites are not equipped with a high-precision angular velocity sensor , the angular velocity information is calculated by the angle information of the high-precision angle sensor. The static balance trim method of this type of photoelectric theodolite is also applicable), the pitch axis motor driver unit, the pitch axis motor current information acquisition and processing unit, and the servo control computer.
[0050] The pitch axis motor, high-precision angle sensor, and high-precision angu...
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In order to solve the technical problems that an existing manual trimming mode is time-consuming and difficult to guarantee trimming precision, and trimming realized by adopting three-dimensional modeling is difficult to meet practical requirements of real engineering, the invention provides a precise static balance trimming method for a pitch axis of a large-size photoelectric theodolite. The method comprises the following steps: 1) establishing a coordinate system; 2) horizontally leveling the photoelectric theodolite; 3) installing a simulation load on the pitch axis of the photoelectric theodolite, adjusting the installation position until the rotary motion of the pitch axis of the photoelectric theodolite reaches static balance, and measuring the friction torque Td of the shafting; 4)calculating a pitch axis motor torque coefficient KT; 5) measuring a real load eccentric position; 6) performing counterweight mass and position optimization calculation; 7) trimming; and (8) optimizing, rechecking and confirming counterweight mass and position.
Description
technical field [0001] The invention belongs to the field of photoelectric theodolite for precision tracking, aiming, imaging and measurement, relates to a static balance trimming problem of a photoelectric theodolite, in particular a method for precise static balance trimming of a pitch axis of a large-scale photoelectric theodolite. The large-size photoelectric theodolite in the present invention refers to a photoelectric theodolite with a diameter greater than 450mm. Background technique [0002] With the demand and development of high-precision tracking, aiming, imaging and measurement, high-precision photoelectric theodolites are required to carry a variety of loads regardless of T-shaped or U-shaped structures, and the loads carried on the pitch axis have various types, various sizes and shapes, and optical The caliber is getting larger and larger, and the layout and structure are complex. The load of the photoelectric theodolite includes not only camera components an...
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IPC IPC(8): G01M1/38
CPCG01M1/12G01M1/32
Inventor 刘军刘朝晖李哲彭伟
Owner XI'AN INST OF OPTICS & FINE MECHANICS - CHINESE ACAD OF SCI