AR Bispectrum Characteristics of Block Forming Machine’s Vibration Driven by Hydraulic Exciter
Block forming machine, as a kind of automatic equipments, can quickly compact blocks. Higher-order spectrum analysis emerges as a new effective method in signal processing, which can describe nonlinear coupling, restrain Gaussian noise and reserve phase components. In the paper, a hydraulic exciter applying to block forming machine will be introduced. Then block forming machine’s random vibration signals during the compacting process would be collected, in order to make use of the sample data to build up a time series autoregressive model and bispectrum of three-order accumulation, to analyze AR bispectrum characteristics of the machine’s vibrate signals under different work conditions.
Pengcheng Wang, Liqun Ai, Yungang Li, Xiaoming Sang and Jinglong Bu
J. S. Zhuang et al., "AR Bispectrum Characteristics of Block Forming Machine’s Vibration Driven by Hydraulic Exciter", Advanced Materials Research, Vols. 295-297, pp. 2249-2253, 2011