8.3.2.4
Enhanced Peak-Peak Algorithm
The enhanced peak-peak algorithm (only available with YVIBH1B) performs the same operation as the legacy peak-peak
algorithm, but it executes using a sliding window, rather than a fixed window. New input data displaces old data in the
windowed peak detection function. Window size (scan period) is determined by rotor speed on GAP13_KPH1. If there is no
key-phasor #1 input, 160 ms scan period is the default. CDM sensors always use CDM_Scan_Period as defined in the
configuration. As new data is processed, data older than the window size is displaced. At frame rate, the data within the
window is used to calculate the peak-peak measurement value, which is scaled and sent to signal space. Since the window is
continuously updated, the effective update rate is frame rate.
Signal Space Value
Frame
Period
Scan Period (s)
V
p
p
Enhanced Peak-Peak Algorithm
8.3.2.5
Enhanced RMS Algorithm
The Enhanced RMS algorithm (only available with YVIBH1B) uses the same sliding scan window logic as the Enhanced
Peak-Peak algorithm. Data is passed through a 1-pole high-pass filter with a cutoff frequency of 0.1Hz. This removes sensor
biasing voltage from the RMS value. The RMS calculation is performed on the windowed data. Window size (scan period) is
determined by rotor speed on GAP13_KPH1. CDM sensors always use CDM_Scan_Period as defined in the configuration.
As new data is processed, data older than the window size is displaced. At frame rate, the data within the window is used to
calculate an RMS value, which is scaled and sent to signal space. Since the window is continuously updated, the effective
update rate is frame rate.
YVIB Vibration Monitor Modules
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