Filter, filter filtering method, and storage medium
By introducing a PI loop and an auxiliary loop into the filter, and adjusting the parameters of the auxiliary loop using the output error, the problem of poor adaptability of the filter to changes in the frequency of external noise is solved, adaptive filtering of noise of different frequencies is achieved, and the stability of the constant value system is improved.
CN122068875BActive Publication Date: 2026-07-14SHENZHEN POWEROAK NEWENER CO LTD +1
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- SHENZHEN POWEROAK NEWENER CO LTD
- Filing Date
- 2026-04-23
- Publication Date
- 2026-07-14
AI Technical Summary
Technical Problem
Existing filters are poorly adapted to changes in the frequency of external noise and are difficult to maintain stability in constant-value systems.
Method used
Design a filter comprising a PI loop and an auxiliary loop. The proportional gain coefficient, the first integral gain coefficient, and the crossover frequency of the PI loop are initially determined. The second integral gain coefficient of the auxiliary loop is initially determined based on the crossover frequency and the target noise frequency. The filter output error is adjusted to adapt to noise interference of different frequencies.
Benefits of technology
This improves the adaptability of the constant value system to noise interference of different frequencies and enhances the stability of the system.
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Smart Images
Figure CN122068875B_ABST
Abstract
The embodiment of the application relates to the technical field of filters, in particular to a filter, a filter filtering method and a storage medium. The filter comprises a PI loop and an auxiliary loop, example gain coefficients, a first integral gain coefficient and a crossover frequency of the PI loop are determined when the auxiliary loop is closed, a second integral gain coefficient of the auxiliary loop acting on the PI loop is preliminarily determined based on the crossover frequency and a target noise frequency, and the second integral gain coefficient is adjusted through an output error of the filter, that is, the parameter design of the auxiliary loop acting on the PI loop needs the target noise frequency to be filtered to participate, that is, the parameters of the auxiliary loop participating in filtering are adaptively adjusted based on the target noise frequency to be filtered, when the target noise frequency changes, the parameters of the auxiliary loop acting on the PI loop are also adaptively adjusted, so that the filter can be applied to a constant value system of different frequency noise interference, and the stability of the constant value system is improved.
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