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Four-ring inertial stabilization platform frame zero calibration method

A technology for stabilizing the platform and four-ring inertia, applied in the direction of measuring devices, instruments, etc., can solve problems such as the parallelism between the frame axis and the accelerometer axis, and the deviation of the frame output.

Active Publication Date: 2019-04-16
XIAN AEROSPACE PRECISION ELECTROMECHANICAL INST
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Problems solved by technology

[0004] In fact, after the frame is reset to zero, it is difficult to ensure that the frame axis system and the accelerometer axis system are parallel to each other. If the frame zero position is not adjusted, the frame output will deviate from the benchmark established by the accelerometer coordinate system.

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  • Four-ring inertial stabilization platform frame zero calibration method
  • Four-ring inertial stabilization platform frame zero calibration method
  • Four-ring inertial stabilization platform frame zero calibration method

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Embodiment Construction

[0034] Below in conjunction with accompanying drawing, method of the present invention will be further described:

[0035] After the frame of the four-ring inertial stable platform is reset to zero, the frame and platform are installed as follows: figure 1 shown. The three accelerometers are installed on the table body. After the accelerometers are error compensated, the sensitive axes of the three accelerometers coincide with the table body coordinate system oXp, oYp, and oZp respectively, and the three axes are orthogonal to each other. Ideally, the accelerometer sensitive axes oXp, oYp, and oZp are parallel to the inner ring axis oXm, the table body axis oYm, and the outer ring axis oZm, respectively, and the follower ring axis oSm is parallel to oXm and oXp. In general, the accelerometer installation error compensation is more accurate and can ensure that oYp and oYm coincide, but there are deviations between the accelerometer sensitive axes oXp and oZp and the frame axes...

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Abstract

The invention relates to a four-ring inertial stabilization platform frame zero calibration method. A frame shaft is parallel to an accelerometer sensitive shaft after the four-ring inertial stabilization platform frame is zeroed, so that the calibration precision of an inertia instrument of the four-ring inertial stabilization platform, the conversion precision of the posture of a platform body to the posture of a carrier and the navigation precision of a platform system are improved. The method mainly comprises the following steps of 1), zero calibration of a follow-up ring frame, 2), zero calibration of a shaft frame of the platform body, and 3), zero calibration of an outer ring shaft frame.

Description

technical field [0001] The invention relates to a frame zero calibration method of a four-ring inertial stable platform. Background technique [0002] Long-range strategic missile is the most important application field of inertial navigation technology. Most of the inertial guidance systems of long-range strategic missiles are high-precision inertial stabilization platforms, which represent the highest level of inertial navigation technology. [0003] The four-ring inertial stable platform is a typical type of platform system. On the horizontal platform, after the frame of the four-ring platform is reset to zero, the two-two orthogonal frame axes should be parallel to the two-two orthogonal accelerometer sensitive axes, and the frame axes The orthogonality of the accelerometer is guaranteed by the assembly process, and the orthogonality of the accelerometer is compensated by compensating the installation error. [0004] In fact, after the frame is zeroed, it is difficult ...

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Application Information

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IPC IPC(8): G01C25/00
CPCG01C25/005
Inventor 王庭军乔相伟陈志豪高璞陈远才黎坤裴纺霞韩云明江泽
Owner XIAN AEROSPACE PRECISION ELECTROMECHANICAL INST
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