Displaying similar documents to “Decomposition of vibration signals into deterministic and nondeterministic components and its capabilities of fault detection and identification”

Fast leak detection and location of gas pipelines based on an adaptive particle filter

Ming Liu, Shu Zang, Donghua Zhou (2005)

International Journal of Applied Mathematics and Computer Science

Similarity:

Leak detection and location play an important role in the management of a pipeline system. Some model-based methods, such as those based on the extended Kalman filter (EKF) or based on the strong tracking filter (STF), have been presented to solve this problem. But these methods need the nonlinear pipeline model to be linearized. Unfortunately, linearized transformations are only reliable if error propagation can be well approximated by a linear function, and this condition does not...

Application of the adaptive center-weighted vector median framework for the enhancement of cDNA microarray images

Rastislav Lukac, Bogdan Smołka (2003)

International Journal of Applied Mathematics and Computer Science

Similarity:

In this paper a novel method of noise reduction in color images is presented. The new technique is capable of attenuating both impulsive and Gaussian noise, while preserving and even enhancing the sharpness of the image edges. Extensive simulations reveal that the new method outperforms significantly the standard techniques widely used in multivariate signal processing. In this work we apply the new noise reduction method for the enhancement of the images of the so called gene chips....

Sliding mode differentiator via improved adaptive notch filter

Juan Wang, Hehong Zhang, Yuanlong Yu, Zhihong Dan, Gaoxi Xiao, Qiuming Gu, Chao Zhai (2022)

Kybernetika

Similarity:

To tackle the difficulty in tuning the parameters of sliding mode differentiator (SMD), an improved adaptive notch filter based real-time parameter tuning scheme (denoted as ANF-SMD) is presented. Specifically, the integral feedback of the system output errors is introduced in constructing the cost function for the adaptive notch filter so as to estimate the real-time amplitude and frequency of given inputs. Then, upon the deterministic formula between the parameters of the SMD and the...