A5003745453- Advanced Sensor and Control Systems
- Fault Detection and Control Systems
- Machine Fault Diagnosis Techniques
- Industrial Technology and Control Systems
- Advanced Algorithms and Applications
- Hydraulic and Pneumatic Systems
- Control Systems in Engineering
- Gear and Bearing Dynamics Analysis
- Advanced Numerical Analysis Techniques
- Erosion and Abrasive Machining
- Vibration and Dynamic Analysis
- graph theory and CDMA systems
- Mechanics and Biomechanics Studies
- Advanced Measurement and Detection Methods
- Hip disorders and treatments
- Advanced Graph Theory Research
- Interconnection Networks and Systems
North China Institute of Aerospace Engineering
2021
Xinjiang University
2020
Yanshan University
2007-2019
Yangzhou University
2019
A novel fault diagnosis method is proposed, depending on a cloud service, for the typical faults in hydraulic directional valve. The method, based Machine Learning Service (MLS) HUAWEI CLOUD, achieves accurate of valve by combining both advantages Principal Component Analysis (PCA) dimensionality reduction and eXtreme Gradient Boosting (XGBoost) algorithm. First, to obtain principal component feature set pressure signal, PCA was utilized reduce dimension measured inlet outlet signals Second,...
As the core control system of a rolling mill, hydraulic automatic gauge (HAGC) is key to ensuring process with high speed, precision and reliability. However, HAGC typically mechanical-electric-hydraulic coupling nonlinear characteristics. The vertical vibration load easily occurs during working process, which seriously affects stability causes are difficult determine. In this work, theory method dynamics were employed. model was established. Then, multi-scale utilized solve obtained model,...
Abstract:High-pressure water jet technology has received extensive attention and application due to its high efficiency environmental protection characteristics. The high-pressure nozzle is core component, the research on conducive improving performance efficiency. This paper introduces characteristics of working principle pure jet, abrasive pulsed cavitation reviews theoretical analysis experiment predecessor's nozzle, briefly explains looks forward development trend this technology.
Aiming at the problem that rolling bearings are widely used but have high failure rate. A fault diagnosis method combined with local projective noise reduction and recurrence plots quantification analysis for is presented. The vibration signals of taken as objects. Firstly, signal denoised by method. Then, drawn. system dynamic behavior reflected in extracted analysis. determinism (DET) entropy (ENTR) selected to form characteristic vectors. Finally, vectors training samples clustered kernel...
Aiming at fault diagnosis of axial piston pumps, a new fusion method based on the extreme‐point symmetric mode decomposition (ESMD) and random forests (RFs) was proposed. Firstly, vibration signal pump decomposed by ESMD to get several intrinsic functions (IMFs) an adaptive global mean curve (AGMC) local side. Secondly, total energy selected as data feature extraction analyzing whole oscillation intensity signal. Thirdly, were preprocessed labels set, then, they adopted training testing set...