Micro-electromechanical gyro information fusion system and method based on wavelet entropies

Abstract

The invention relates to a micro-electromechanical gyro information fusion system based on wavelet entropies and a micro-electromechanical gyro fusion method. The system comprises a micro-electromechanical gyro array module (1), a data preprocessing and statistical analysis module (2), a wavelet entropy analyzing and computing module (3) and a signal weighting fusion module (4) which are orderly connected, wherein the signal weighting fusion module (4) is further connected to the data preprocessing and statistical analysis module (2). The fusion method comprises the steps of: performing data preprocessing and statistical analysis on the signal of each micro-electromechanical gyro, and then performing wavelet entropy analysis and calculation, and finally performing signal weighting fusion so as to obtain a fused composite micro-electromechanical gyro signal. Compared with the common variance weighting method, the information fusion method provided by the invention has the advantages that the accuracy of the gyro output signal is improved, and the stability problem existing in a single system can be solved, so that the accuracy and the robustness of the micro-electromechanical gyro are improved effectively.

Description

technical field [0001] The invention relates to the technical field of signal processing, in particular to an information fusion system and information fusion method based on wavelet entropy that can be used for micro-electromechanical gyroscopes. Background technique [0002] (1) Information fusion based on wavelet entropy [0003] Information fusion is a real-time continuous process. It detects, associates, estimates, and combines multi-level, multi-level, and multi-faceted multi-source information. Its purpose is to obtain accurate state, consistency estimation and Complete real-time evaluation. The fused MEMS gyro information has the following characteristics: information redundancy, information complementarity, information real-time, and low-cost information acquisition. MEMS gyroscope array is the hardware basis of information fusion, and the coordination and optimization of multi-source information is the core of fusion. [0004] Wavelet analysis can perform time-d...

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Problems solved by technology

[0009] The technical problem to be solved by the present invention is to provide a micro-electro-mechanical gyroscope information fusion system and fusion method based on wavelet entropy, which is used to solve the problems of low precision and poor filtering effect of the micro-electro-mechanical gyroscope filter system in the prior art

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