Rapid estimating and compensating system with IMU mounting angle obliquely set
A technology for compensating the system and installation angle, which is applied in navigation calculation tools, navigation through speed/acceleration measurement, etc., can solve the problems of reducing system reliability and real-time performance, increasing system design cost and complexity, etc., to achieve easy observation and The effect of control, good portability, and simplified wiring
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Embodiment 1
[0052] The micromechanical strapdown attitude system, which includes the fast estimation and compensation system of the oblique IMU installation angle of the present invention, is fixedly installed on the back of the dashboard at an oblique installation angle of 20 degrees. If the airframe is flying at an altitude of 1000m and a speed of 300km / h, the flight conditions of the airframe’s pitch angle, roll angle, and heading angle during the flight process are collected as follows: Figure 4 As shown, from the analysis of the flight situation, the flight accuracy of the body estimated and compensated by the present invention is within the range of ±2 degrees.
Embodiment 2
[0054] The micromechanical strapdown attitude system, which includes the fast estimation and compensation system of the oblique IMU installation angle of the present invention, is fixedly installed on the back of the dashboard at an oblique installation angle of 45 degrees. If the airframe is flying at an altitude of 1000m and at a speed of 200km / h, the flight conditions of the pitch angle, roll angle, and heading angle during the flight process of the airframe collected successively can be obtained from the analysis of the flight conditions, and the airframe after the estimation and compensation of the present invention Flight accuracy is within ±2.55 degrees.
[0055] Through the analysis of flight test results, the present invention proposes a real-time estimation and compensation system for oblique IMU installation angles suitable for micro-mechanical strapdown attitude systems, which can be installed at any position on the back of the instrument panel at any angle.
[0056]...
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