SVVR

AcronymDefinition
SVVRSoftware Verification and Validation Report
SVVRScientific Visualization and Virtual Reality (various locations)
References in periodicals archive ?
The signal enhancement mechanism for SVVR is described as follows.
Two evaluation indexes are used to evaluate the fault detection capability of SVVR quantitatively.
is discussed to evaluate the fault detection capability of SVVR [43].
The Ind calculated using SVVR is higher than those of the other WSD methods.
(3) Since this study concentrates on VR model and on the filtering effect of VR, the classical evaluation index, SNR, is applied to evaluate the fault detection capability of the proposed SVVR method.
The WSD method SVVR is proposed to extract the fault characteristic frequency, which is overwhelmed by heavy background noise.
Caption: FIGURE 4: Comparison of the periodicity and noise suppression performance of two WSD methods: (a) input signal; (b) MSTSR output signal (optimal parameters: a = 0.7, b = 8e - 4, h = 0.01, and K = 6); and (c) optimal SVVR output signal (optimal parameters: a = 1.9, b = 2.9, [gamma] = 0.009, h = 0.015, B = 1.6, and [OMEGA] = 23236 rad/s).
Caption: FIGURE 5: Frequency response analysis for SVVR.
Caption: FIGURE 9: Analysis results for the bearing signal with a defective inner race: (a) original signal; (b) envelope signal with a filtering band at 2500-3000 Hz; (c) optimal MSTSR output signal (optimal parameters: a = 1e -6,b = 8827, h = 0.008, and K =6); (d) optimal WSSR output signal (optimal parameters: [R.sub.1] =0.3, [V.sub.0] = 16, c = 0.03, and h = 0.09); (e) optimal WSGSR output signal (optimal parameters: [R.sub.1] = 1, [R.sub.2] = 1, [V.sub.0] = 18, [V.sub.2] = 0.8, c = 0.4, and h = 0.2); and (f) optimal SVVR output signal (optimal parameters: a = 1.2, b = 5, [gamma] = 0.008, h = 0.05, B = 0.06, and [OMEGA] = 36505 rad/s).
Caption: FIGURE 11: Analysis results for the bearing signal with a defective outer race: (a) original signal; (b) envelope signal with a filtering band at 3000-3750 Hz; (c) optimal MSTSR output signal (optimal parameters: a = 0.4, b = 1, h = 2e -4, and K =6); (d) optimal WSSR output signal (optimal parameters: [R.sub.1] = 0.08, [V.sub.0] = 36, c = 0.6, and h= 1e- 4); (e) optimal WSGSR output signal (optimal parameters: [R.sub.1] = 0.05, [R.sub.2] =2.1, [V.sub.0] = 25, [V.sub.1] = 0.5, c = 0.4, and h = 4e - 5); and (f) optimal SVVR output signal (optimal parameters: a = 7.2, b = 3.8, [gamma] = 6e -6, h = 0.03, B = 4e - 5, and [OMEGA] = 16736 rad/s).