Direct parameters identification of industrial continuous linear dynamic system by time-window wavelet denoising modulation algorithm
Shi Lin Fang · Journal of Transport Science and Engineering · 2011
Interference noise signals were denoised by wavelet denoising algorithm in time window.The algebraic equivalence equation of linear dynamic system was achieved by wavelet denoising data modulation integration to directly estimate system parameters by Least-square algorithm.For the noise pollution system,estimated parameter was biased,the unbiased estimation of system parameters were obtained by wavelet denoising modulation instrumental variable recursive algorithm that instrumental variable was constructed by time-window wavelet denoising modulation method.The simulation and the industrial application were illustrated to be effectiveness and practicability of wavelet denoising modulation instrumental variable recursive algorithm.Effective reference method was provided for online system reliable parameters identification.