期刊
IEEE TRANSACTIONS ON INSTRUMENTATION AND MEASUREMENT
卷 59, 期 8, 页码 2220-2229出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TIM.2009.2031836
关键词
Analysis; generalized polynomial Hammerstein model; identification; nonlinear convolution; nonlinear system (NLS); swept-sine
资金
- Ministry of Education of Czech Republic [MSM6840770014]
- French Embassy in Prague
In this paper, we propose a method for nonlinear system (NLS) identification using a swept-sine input signal and based on nonlinear convolution. The method uses a nonlinear model, namely, the nonparametric generalized polynomial Hammerstein model made of power series associated with linear filters. Simulation results show that the method identifies the nonlinear model of the system under test and estimates the linear filters of the unknown NLS. The method has also been tested on a real-world system: an audio limiter. Once the nonlinear model of the limiter is identified, a test signal can be regenerated to compare the outputs of both the real-world system and its nonlinear model. The results show good agreement between both model-based and real-world system outputs.
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