Condition Monitoring Under Non-Stationary Operating Conditions using Time–Frequency Representation-Based Dynamic Features

Cardona-Morales, Oscar; Alvarez-Marin, D.; Castellanos-Domínguez, G.

doi:10.1007/978-3-642-39348-8_38

Cited by 4 publications

(2 citation statements)

References 15 publications

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“…ese signal processing methods can be classified into steady work conditions [5], high loading with low-speed work conditions [9], high speed conditions [10], very lowspeed conditions, [11] and nonstationary work conditions [12] by different work conditions. Although these methods are effective, they do not qualify for bearing quality inspection due to the low shaft speed and light radial load condition specified for nondestruction inspection.…”

Section: Introductionmentioning

confidence: 99%

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In-Process Quality Inspection of Rolling Element Bearings Based on the Measurement of Microelastic Deformation of Outer Ring

Jiang

Han

et al. 2019

Shock and Vibration

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Quality inspection is the necessary procedure before bearings leaving manufacturing factories. A testing machine with low shaft speed and light radial load condition is generally used to test the dynamic quality of bearings, which avoids creating any potential damages to testing bearings. However, the signal of defective bearings is easily polluted by very weak noise using the traditional vibration-based measurement method due to the low shaft speed and light radial load condition specified for nondestructive inspection, which needs complicated and time-consuming calculation and is not suitable for online inspection. Thus, there are problems about special operating conditions and weak fault severity in quality inspection of bearings, which is quite different from the fault diagnosis of bearings. In this paper, a novel dynamic quality evaluation technique is proposed based on the measurement of Hertz deformations. The measurement system is mainly composed of an eddy current sensor, sensor fixture, and data acquisition platform with less transfer path than the vibration-based measurement system. The sensor fixture is optimized through numerical simulations to obtain signals with a high signal-to-noise ratio. Accurate evaluation of dynamic quality can be implemented reliably with simple signal processing. The proposed method can be used with a rotating speed of 100 rev/min and test load of 100 N, which is remarkably lower than the traditional quality inspection machineries with a rotating speed of around 1000 rev/min and the test load of 400 N. Both simulation and experiment studies have verified the proposed method.

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Section: Introductionmentioning

confidence: 99%

“…ere are some weak signal processing methods such as average time-domain synchronization technology [15], wavelet and wavelet entropy [16], chaotic oscillator [17], difference oscillator [18], the empirical mode decomposition [19], and stochastic resonance (SR) [12,20]. However, these methods are mainly used in fault diagnosis of bearings.…”

Section: Introductionmentioning

confidence: 99%