Real-time Sine Processing Analysis Introduction
Sine reduction (also known as sine processing) is a method of performing structural tests on large structures. The method can identify and analyze natural frequencies by exciting them with a sweep of single frequencies.
Vibration signals from accelerometers and force sensors mounted on the structure are measured together with sweep frequency and are being tracked, recorded and analyzed by the data acquisition system in real-time. As desired output, sine processing returns the structural resonance frequencies, amplitudes, phase, THD (total harmonic distortion) of response and also transfer functions between excitation and response points.
The COLA signal from the vibration shaker controller is used as the frequency reference for the signal analysis.
What is COLA signal?
The COLA signal (Constant Output Level Amplitude) is a constant voltage sine wave which frequency tracks the Drive signal frequency during the Sine Control test. It is the same frequency as the excitation frequency.
Dewesoft sine processing solution is the most powerful structural analysis tool which supports the evaluation of responses and transfer functions on an unlimited number of channels, all in real-time.