Alpha-beta filtering parameter adaptive adjustment method

• Main Authors: CUI JINTAO, MA CHUNBO, AO JUN
• Format: Patent
• Language: Chinese; English
• Published: 26.03.2024
• Subjects: ANALOGOUS ARRANGEMENTS USING OTHER WAVES; BASIC ELECTRONIC CIRCUITRY; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; ELECTRICITY; IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION ORRERADIATION OF RADIO WAVES; MEASURING; PHYSICS; RADIO DIRECTION-FINDING; RADIO NAVIGATION; RESONATORS; TESTING

The invention discloses an alpha-beta filtering parameter adaptive adjustment method, and belongs to the field of sensor data processing. Aiming at the problems of low measurement precision and poor stability caused by large fluctuation of measurement data, the method comprises the following steps: firstly, stabilizing the state of a filtering system by using alpha and beta parameters of an empirical formula, and setting a sliding window to calculate the mean square error of filtering data under the stable condition; taking the minimum mean square error as a prediction error, enabling the prediction error to adapt to the change of data through the minimum mean square error, selecting a measurement error according with reality, and taking the prediction error and the measurement error as variables to construct a feedback function to calculate an alpha value; and finally, selecting an optimal relational expression to calculate a beta value, and correcting the optimal estimation at the next moment through the al