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Method for calibrating measurement accuracy of dynamic angle measuring system

A technology of system measurement and calibration method, which is applied in the field of calibration of measurement accuracy of dynamic angle measurement system, can solve the problems of low precision and inability to meet high precision calibration, and achieve good repeatability, small relative angular displacement, and elimination of system errors Effect

Active Publication Date: 2015-04-29
BEIJING AEROSPACE INST FOR METROLOGY & MEASUREMENT TECH +1
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Problems solved by technology

In fact, in this method, the target is used as a calibration reference, and its own dynamic angle measurement error magnitude is much higher than that of arc seconds (″), which can only be used for low-precision dynamic precision calibration, and cannot meet the needs of high-precision calibration

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  • Method for calibrating measurement accuracy of dynamic angle measuring system
  • Method for calibrating measurement accuracy of dynamic angle measuring system
  • Method for calibrating measurement accuracy of dynamic angle measuring system

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Embodiment Construction

[0026] A method for calibrating measurement accuracy of a dynamic angle measurement system of the present invention is introduced below in conjunction with the accompanying drawings and embodiments:

[0027] Such as figure 1 As shown, a method for calibrating the measurement accuracy of a dynamic angle measurement system includes the following steps:

[0028] The first step: test preparation;

[0029] Angle sensor for connecting the dynamic goniometer to the turntable. Generally, a dynamic angle measuring device includes an angular position signal analog-to-digital conversion module, a synchronous pulse receiving device and a data processing center. Wherein, the angular position signal analog-to-digital conversion module is respectively connected with the synchronous pulse receiving device and the data processing center, which performs analog-to-digital conversion on the angle sensor signal of the turntable to obtain a digital angle signal, and then when the synchronous puls...

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Abstract

The invention belongs to the technical field of measurement and control, particularly relates to a method for calibrating the measurement accuracy of a dynamic angle measuring system, and aims to provide a method capable of calibrating a high-speed dynamic angle acquisition system based on a rotary table. The method comprises the following steps: testing preparation, calibration device mounting, dynamic angle reference determination and angle calibration. The method comprises the steps of calibration device mounting, and a calibration device and an angle sensor of the rotary table are coaxially mounted, so that a stationary reference angle is provided for a dynamic angle, and a system error is eliminated. The dynamic angle measuring system is calibrated and then displayed, the dispersiveness of the measured valve at low speed (lower than 1 degree / s) is lower than o.1''. Thus, the angle sensor in the calibration system and an angle encoder used for generating pulse signals, which are coaxially mounted, are good in zero position error repeatability, the relative angular displacement amount is very small, and the demand of high-precision calibration is met.

Description

technical field [0001] The invention belongs to the technical field of measurement and control, and in particular relates to a method for calibrating the measurement accuracy of a dynamic angle measurement system. Background technique [0002] The high-precision turntable is mainly used for the calibration of inertial navigation products, star sensors and other products and the motion simulation of some parts on the missile. The index accuracy that the turntable can achieve also reflects the development level of the defense industry to a certain extent. With the improvement of the dynamic performance of various tested products, the dynamic angular position measurement capability of the turntable, as an important indicator, is required in more and more projects. Therefore, special research has been started on the dynamic angle measurement system in China, and the research and development of the corresponding accuracy calibration method is imminent. [0003] Dynamic angular p...

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Application Information

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IPC IPC(8): G01B21/22
CPCG01B7/30G01B11/26G01B21/22
Inventor 唐声权刘均松张新磊江雯高扬麦吉
Owner BEIJING AEROSPACE INST FOR METROLOGY & MEASUREMENT TECH
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