Asymmetric second-order stochastic resonance weak fault feature extraction method
نویسندگان
چکیده
منابع مشابه
Research of weak fault feature information extraction of planetary gear based on ensemble empirical mode decomposition and adaptive stochastic resonance
Characterized by small size, light weight and large transmission ratio, planetary gear transmission is widely used in large scale complex mechanical system with low speed and heavy duty. However, due to the influences of operating condition, manufacturing error, assembly error and multi-tooth meshing, the vibration signal of planetary gear exhibits the characteristics of nonlinear and non-stati...
متن کاملEffects of underdamped step-varying second-order stochastic resonance for weak signal detection
Article history: Available online 2 October 2014
متن کاملA new noise-controlled second-order enhanced stochastic resonance method with its application in wind turbine drivetrain fault diagnosis
Condition monitoring of a wind turbine is important to extend the wind turbine system’s reliability and useful life. However, in many cases, to extract feature components becomes challenging and the applicability of information drops down due to the large amount of noise. Stochastic resonance (SR), used as a method of utilising noise to amplify weak signals in nonlinear systems, can detect weak...
متن کاملGenetic Stochastic Resonance: A New Fault Diagnosis Method to Detect Weak Signals in Mechanical Systems
Mechanical faults, such as defects or wear of bearings and gears, are often characterized by the presence of periodically weak signals, which are contaminated by strong background noises and difficult to differentiate using traditional methods. In this paper, we propose a novel genetic stochastic resonance scheme for feature extraction of the above signals. Firstly, the original data are input ...
متن کاملResonance Phenomena for Second-Order Stochastic Control Equations
We study the existence and the properties of solutions to the Dirichlet problem for uniformly elliptic second-order Hamilton-JacobiBellman operators, depending on the principal eigenvalues of the operator.
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Measurement and Control
سال: 2020
ISSN: 0020-2940
DOI: 10.1177/0020294020914946