A Physical Platform for Hybrid Inertial Navigation System

A technology of inertial navigation system and physical platform, applied in the field of physical platform, platform design and control of hybrid inertial navigation system, can solve the problems of complex platform structure, large number of electromechanical components and analog circuits, etc., to simplify the mechanical structure and avoid The brush is easy to wear and the effect of high control precision

Active Publication Date: 2019-10-22
BEIHANG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This brings problems such as the large number of electromechanical components and analog circuits on the platform, and the complex structure of the platform.

Method used

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  • A Physical Platform for Hybrid Inertial Navigation System
  • A Physical Platform for Hybrid Inertial Navigation System
  • A Physical Platform for Hybrid Inertial Navigation System

Examples

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Embodiment Construction

[0022] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0023] According to different application occasions, the physical platform of the hybrid inertial navigation system can be in the form of three frames, double frames or single frames in structure. The three-frame platform can isolate the angular motion of the carrier in all directions, which is more advantageous in applications where the attitude movement of the carrier is relatively flexible. The following takes a three-frame platform as an example to make a specific introduction. figure 1 It is a schematic diagram of a three-frame platform structure. The inner frame axis is the azimuth axis Z, the middle frame axis is the pitch axis X, and the outer frame axis is the roll axis Y. A DC brushless motor and a grating are installed on each frame, a conductive slip ring is installed at one end of the grating of the inner frame, and flexible wires...

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Abstract

The invention discloses a physical platform for a hybrid inertial navigation system. The physical platform adopts full digital control, the structure of the platform is greatly simplified, and only a motor, a conductive slip ring and a grating are left on the frame. The hybrid inertial navigation system requires the physical platform to simultaneously realize three working modes of 'locking, stabilization, and stabilization + rotation'; a corresponding control algorithm is designed for the special stabilization + rotation working mode of the hybrid inertial navigation system; and experiments prove that high control precision can be achieved by adopting the control method, and the designed physical platform can meet the using requirement of the hybrid inertial navigation system.

Description

technical field [0001] The invention relates to a physical platform for a hybrid inertial navigation system, which is mainly suitable for platform design and control of the hybrid inertial navigation system, and belongs to the field of inertial navigation. Background technique [0002] The hybrid inertial navigation system is an inertial navigation system that integrates the structure of the platform inertial navigation system, the algorithm of the strapdown inertial navigation system and the error suppression technology of the rotary inertial navigation system. The organic combination of the "mathematical platform" based on the strapdown attitude calculation is the primary feature of the hybrid inertial navigation system. [0003] In the traditional platform inertial navigation system, the function of the physical platform to isolate the angular motion of the carrier is mainly to rely on the simulated electromechanical components (such as the secant resolver on the azimuth ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01C21/18
Inventor 王蕾宋天骁王玮李魁张谦刘增军
Owner BEIHANG UNIV
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