Contra rotating positioning mechanism for eliminating dynamic regulating gyroinclinometer inertia device constant value error

A technology of gyro inclinometer and inertial device, which is applied to gyro/steering sensing equipment, gyro effect for speed measurement, instruments and other directions, which can solve the problems of real-time, precise compensation, difficulty in grasping, and low system measurement accuracy.

Inactive Publication Date: 2009-05-13
BEIHANG UNIV
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AI Technical Summary

Problems solved by technology

However, the software compensation method cannot grasp the influence of uncontrollable factors such as temperature, humidity, pressure, and electromagnetic field on the constant value error term, resulting in low measurement accuracy of the system
Therefore, it is difficult to compensate the constant value error term of the inertial device in real time and accurately during the actual measurement of the moving gyro inclinometer.

Method used

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  • Contra rotating positioning mechanism for eliminating dynamic regulating gyroinclinometer inertia device constant value error
  • Contra rotating positioning mechanism for eliminating dynamic regulating gyroinclinometer inertia device constant value error
  • Contra rotating positioning mechanism for eliminating dynamic regulating gyroinclinometer inertia device constant value error

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Embodiment Construction

[0059] Such as figure 1 , 2 As shown, the present invention is composed of a bearing 1, a counterweight module 2, a positioning module 3, a torque motor 4, a forward and reverse positioning arm 5, a control circuit 6, and an inertial body assembly 7. The inertial body assembly 7 is composed of a dynamic tuning gyroscope and two accelerometers. The front end of the inertial body assembly 7 is supported by the bearing 1, and the rear end is connected with the moment motor 4; the moment motor 4 has a special forward and reverse positioning arm 5; a counterweight module 2 is fixed on the shell of the inertial body assembly 7; the positioning module 3 is connected with the tilt measurement The instrument shell is fixedly connected, with a 0° positioning stopper and a 180° positioning stopper. The square wave control signal is sent out by the microcontroller, and the torque motor 4 is controlled by the control circuit 6. When the square wave signal is high, the torque motor 4 rotates f...

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Abstract

The present invention relates to a counter-rotating location mechanism for eliminating dynamically-tuned gyroscopic clinometer inertia device normal value error. It is mainly composed of the following several portions: bearing, lead counterweight block, location module, torque motor, backward and forward rotating location arm, control circuit and inertia body component. Said invention also provides its working principle and its concrete operation method.

Description

Technical field [0001] The invention belongs to the technical field of directional drilling in the petroleum industry, and relates to a dynamically adjustable gyro inclinometer for oil well inclination logging, in particular to a counter-rotating positioning mechanism that eliminates the constant error of the inertial device of the dynamically adjustable gyro inclinometer. The adjustable gyro inclinometer eliminates the constant value error of its inertial device during real-time measurement downhole. Background technique [0002] Dynamically adjustable gyro inclinometer is a precision inclinometer system, its core inertial body component adopts advanced aviation inertial navigation technology. The inertial body component is composed of a dynamic tuning gyroscope and two accelerometers. The gyroscope is used to sense the angular velocity component of the earth's rotation, and the accelerometer is used to sense the gravitational acceleration component. The inclination angle, azimu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01C19/00G01C25/00E21B47/022E21B47/0236
Inventor 郦吉臣房建成杨胜李红
Owner BEIHANG UNIV
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