Calibrating method of gyro balancing machine

A technology of a gyro inclinometer and a calibration method, which is applied in the field of petroleum instruments, can solve the problems of low accuracy of the gyro, and achieve the effect of effective and accurate calibration

Inactive Publication Date: 2017-06-23
航天科工惯性技术有限公司
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Problems solved by technology

[0003] Due to the low accuracy of the gyroscope, the existing static six-position calibration method of the strapdown inertial navigation system, using the six-posit

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  • Calibrating method of gyro balancing machine

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Embodiment Construction

[0012] Embodiments of the present invention will be described below with reference to the drawings. Elements and features described in one drawing or one embodiment of the present invention may be combined with elements and features shown in one or more other drawings or embodiments. It should be noted that representation and description of components and processes that are not relevant to the present invention and known to those of ordinary skill in the art are omitted from the drawings and descriptions for the purpose of clarity.

[0013] refer to figure 1 The gyro inclinometer includes an accelerometer and a gyroscope, and the calibration method of the gyro inclinometer provided in this embodiment includes:

[0014] Step S101, determining twelve different positions on the rate turntable;

[0015] Step S102, placing the gyro inclinometer at twelve positions respectively, obtaining the accelerometer static output of the accelerometer at the twelve positions, and calculating...

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Abstract

The invention provides a calibrating method of a gyro balancing machine. The gyro balancing machine comprises an accelerometer and a gyroscope. The marking method comprises the steps of determining twelve different positions on a rotating velocity rotary table; putting the gyroscope at twelve positions respectively, obtaining accelerometer static output of the accelerometer on the twelve positions, and according to the accelerated speed output and an accelerated speed output model, calculating a null bias, a scale factor and a mounting error of the accelerometer; obtaining gyroscope static output and gyroscope dynamic output of the gyroscope on the twelve positions, and according to the gyroscope static output, an output preset angle velocity, the gyroscope dynamic output and the accelerated speed output model, calculating to obtain a null bias, a scale factor and a mounting error of the gyroscope. According to the calibrating method of the gyro balancing machine, an error of the gyro balancing machine can be effectively calibrated.

Description

technical field [0001] The invention relates to the field of petroleum instruments, in particular to a calibration method for a gyro inclinometer. Background technique [0002] With the rapid development of my country's national economy and the maturity of drilling technology, most oil fields at home and abroad have entered the later stage of development, and most of the new exploration blocks are located in special environments, such as oceans, beaches, deserts, etc. Difficulty and cost are greatly increased. On the other hand, in order to achieve stable production, mature oilfields are faced with the development of a large number of marginal oil and gas reservoirs, independent small oil and gas reservoirs, complex fault block oil and gas reservoirs, ultra-thin oil and gas reservoirs and other difficult-to-produce reserves. The needs of the exploration and development situation promote the evolution and development of well types. Wells with complex structures such as extend...

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Application Information

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IPC IPC(8): E21B47/022G01C25/00
Inventor 郭秋芬李世扬吕伟王晋麟安金刚游学李纬燕张晓丽
Owner 航天科工惯性技术有限公司
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