Journal
SENSORS
Volume 22, Issue 12, Pages -Publisher
MDPI
DOI: 10.3390/s22124566
Keywords
active noise control; FxRLS; tracking performance; momentum technique; convergence condition
Funding
- National Natural Science Foundation of China [12004058]
- China Postdoctoral Science Foundation [2020M673128]
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This paper proposes a new proportional FxRLS (PFxRLS) algorithm to solve the sensitivity and tracking performance limitations of the traditional FxRLS algorithm. The algorithm successfully reduces the sensitivity to user-defined parameters and improves robustness and denoising performance through the introduction of momentum technique.
The filtered-x recursive least square (FxRLS) algorithm is widely used in the active noise control system and has achieved great success in some complex de-noising environments, such as the cabin in vehicles and aircraft. However, its performance is sensitive to some user-defined parameters such as the forgetting factor and initial gain. Once these parameters are not selected properly, the de-noising effect of FxRLS will deteriorate. Moreover, the tracking performance of FxRLS for mutation is still restricted to a certain extent. To solve the above problems, this paper proposes a new proportional FxRLS (PFxRLS) algorithm. The forgetting factor and initial gain sensitivity are successfully reduced without introducing new turning parameters. The de-noising level and tracking performance have also been improved. Moreover, the momentum technique is introduced in PFxRLS to further improve its robustness and de-noising level. To ensure stability, its convergence condition is also discussed in this paper. The effectiveness of the proposed algorithms is illustrated by simulations and experiments with different user-defined parameters and time-varying noise environments.
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