Design of PI-adaptive All-Digital Phase-Locked Loop based on fuzzy control
Konferenz: ECITech 2022 - The 2022 International Conference on Electrical, Control and Information Technology
25.03.2022 - 27.03.2022 in Kunming, China
Tagungsband: ECITech 2022
Seiten: 6Sprache: EnglischTyp: PDF
Autoren:
Zhang, Cong; Ding, Jiafeng; Li, Xinmei; Chen, Shijie; Yang, Hao (School of Physics and Electronics, Central South University, Changsha, China)
Chu, Jianjun (Changsha Sunman Electronics CO., Ltd, Changsha, China)
Inhalt:
In order to solve the mutually exclusive problem of locking speed and anti-noise ability in All-Digital Phase-Locked Loop (ADPLL) with fixed Proportion-Integral (PI) parameters, an adaptive PI parameter ADPLL based on fuzzy control is designed in this paper. Firstly, the phase-domain mathematical model is established and an adaptive control rule is obtained by analogizing the bandwidth theory of Analog Phase-Locked Loop. Then, a PI parameters adaptive controller based on fuzzy control algorithm is designed to adjust the PI parameters of loop filter. The ADPLL system design and simulation experiments are completed in Simulink. The results show that the new ADPLL has locking speed of high bandwidth and anti-noise stability of low bandwidth. It can complete the frequency and phase locking in 13 cycles of input signal and its anti-noise stability is close to the bandwidth-ratio 0.03.