Modeling and Optimization for Fault Diagnosis of Electromechanical Systems Based on Zero Crossing Algorithm

Chen Qing; Liu Tao; Wu XingLi Hua

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Modeling and Optimization for Fault Diagnosis of Electromechanical Systems Based on Zero Crossing Algorithm

机译：Modeling and Optimization for Fault Diagnosis of Electromechanical Systems Based on Zero Crossing Algorithm

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The demand of system security and reliability in the modern industrial process is ever-increasing, and fault diagnosis technology has always been a crucial research direction in the control field. Due to the complexity, nonlinearity, and coupling of multitudinous control systems, precise system modeling for fault diagnosis is attracting more attention. In this paper, we propose an improved method of electromechanical systems fault diagnosis based on zero-crossing (ZC) algorithm, which can present the calculation model of zero-crossing rate (ZCR) and optimize the parameters of ZC algorithm by establishing a criterion function model to improve the diagnosis accuracy and robustness of ZC characteristic model. The simulation validates the influence of different signal-to-noise ratio (SNR) on ZC feature recognition ability and indicates that the within-between distance model is effective to enhance the diagnose accuracy of ZC feature. Finally, the method is applied to the diagnosis of motor fault bearing, which confirms the necessity and effectiveness of the model improvement and parameter optimization and verifies the robustness to the load.

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《Mathematical Problems in Engineering: Theory, Methods and Applications》 |2020年第26期|9267838.1-9267838.13|共13页
作者
Chen Qing; Liu Tao; Wu XingLi Hua;
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Kunming Univ Sci & Technol, Key Lab Adv Equipment Intelligent Mfg Technol Yun, Kunming 650500, Yunnan, Peoples R China;

Kunming Univ Sci & Technol, Key Lab Adv Equipment Intelligent Mfg Technol Yun, Kunming 650500, Yunnan, Peoples R China|Yunnan Vocat Coll Mech & Elect Technol, Kunming 650203, Yunnan, Peoples R China;

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Modeling and Optimization for Fault Diagnosis of Electromechanical Systems Based on Zero Crossing Algorithm

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