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A method for eliminating noise of UAV mems acceleration sensor

An acceleration sensor and noise cancellation technology, applied in the field of aircraft navigation, can solve the problem of large noise of the UAV acceleration sensor, and achieve the effect of avoiding sensor errors, ensuring accuracy, and reducing sensor errors.

Active Publication Date: 2021-07-27
CHENGDU AERONAUTIC POLYTECHNIC
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention aims at the above-mentioned deficiencies in the prior art, and provides a method for eliminating noise of the UAV MEMS acceleration sensor that can solve the problem of high noise of the UAV acceleration sensor in the prior art

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  • A method for eliminating noise of UAV mems acceleration sensor
  • A method for eliminating noise of UAV mems acceleration sensor
  • A method for eliminating noise of UAV mems acceleration sensor

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Embodiment Construction

[0037] The present invention will be further described below in conjunction with accompanying drawing:

[0038] like figure 1 As shown, it is a flow chart of the noise elimination method of the UAV MEMS acceleration sensor of the present invention.

[0039] Unmanned aerial vehicle MEMS acceleration sensor noise elimination method of the present invention comprises the steps:

[0040] S1. Obtain the initial acceleration value of the UAV at different opening and closing degrees of the accelerator through the acceleration sensor.

[0041] Further, the initial acceleration value includes acceleration values ​​collected when the accelerator opening and closing degree is 0%, 30% and 60%, such as image 3 and Figure 4 shown.

[0042] like figure 2 As shown, when the throttle opening and closing degree of the UAV is increased, it will lead to a positive correlation between the acceleration data increase and the throttle opening and closing degree. The degree of opening and clo...

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Abstract

The invention discloses a noise elimination method of a MEMS acceleration sensor of an unmanned aerial vehicle, which comprises obtaining the initial acceleration value of the unmanned aerial vehicle at different opening and closing degrees of the accelerator through the acceleration sensor; performing fast Fourier transform processing on the acquired initial acceleration value; The high-order FIR low-pass filter is selected to perform high-frequency filtering on the transformed acceleration value; the mean value filter is used to perform low-frequency filtering on the acceleration value after high-frequency filtering. The invention can solve the problem of large noise of the acceleration sensor of the unmanned aerial vehicle in the prior art, and has low cost, small amount of calculation and accurate results.

Description

technical field [0001] The invention relates to the technical field of aircraft navigation, in particular to a method for eliminating noise of an unmanned aerial vehicle's MEMS acceleration sensor. Background technique [0002] In recent years, due to the rise of aerial photography drones, their small size, light weight, and strong mobility have made them flourish in many fields, such as power inspections, land inspections, video aerial photography, agricultural plant protection, forest fire prevention and scientific research platform, etc. [0003] Although the application has been greatly developed, most of the existing small UAVs use low-cost MEMS acceleration sensors as the data source for navigation and control. However, due to the principle of the rotor UAV, when the aircraft starts, the accelerometer data will generate mechanical noise due to the vibration of the motor and propeller. In addition, the acceleration sensor itself also greatly affects the effectiveness o...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01P21/00
CPCG01P21/00
Inventor 王强王思源何先定王旭刘明鑫张凯
Owner CHENGDU AERONAUTIC POLYTECHNIC