Analisi delle vibrazioni
Signal Processing Toolbox™ fornisce funzioni che consentono di studiare e caratterizzare le vibrazioni nei sistemi meccanici. Utilizza l'analisi degli ordini per analizzare e visualizzare il contenuto spettrale presente nei macchinari rotanti. Traccia ed estrai gli ordini e le relative forme d'onda nel dominio del tempo. Stima lo spettro medio di un segnale in funzione dell'ordine. Esegui analisi modali sperimentali stimando le funzioni di risposta in frequenza, le frequenze naturali, i rapporti di smorzamento e le forme modali. Diagrammi di stabilizzazione del grafico. Rimuovi il rumore in modo coerente con la media sincrona nel tempo e analizza l'usura utilizzando gli spettri di inviluppo. Genera conteggi rainflow ad alto ciclo per l’analisi della fatica.
Funzioni
Argomenti
- Order Analysis of a Vibration Signal
Analyze vibrations in rotating machinery using order analysis.
- Rolling Element Bearing Fault Diagnosis (Predictive Maintenance Toolbox)
Perform fault diagnosis of a rolling element bearing based on acceleration signals.
- Modal Analysis of Identified Models
Identify a state-space model of a system and use the model to compute frequency-response functions and modal parameters.
- Modal Analysis of a Flexible Flying Wing Aircraft (System Identification Toolbox)
This example shows computation of bending modes of a flexible wing aircraft.
Esempi in primo piano
Modal Analysis of a Simulated System and a Wind Turbine Blade
Estimate frequency-response functions and modal parameters from experimental data.
Compute and Display Order-RPM Map
Display an order-RPM map as a waterfall plot and using built-in functionality.
Machine Learning and Deep Learning Classification Using Signal Feature Extraction Objects
Use signal feature extraction objects and AI-based classification to identify faulty bearing signals in mechanical systems.
Vibration Analysis of Rotating Machinery
Analyze vibration signals from a gearbox using time-synchronous averaging and envelope spectra.
Practical Introduction to Fatigue Analysis Using Rainflow Counting
Use rainflow counting to perform fatigue analysis and find the total damage on a mechanical component due to cyclic stress.
Practical Introduction to Shock Waveform and Shock Response Spectrum
Compute shock response spectra of synthetic and measured transient acceleration signals.
Frequency-Response Analysis of MIMO System
Estimate the multi-input/multi-output (MIMO) transfer function for a two-body oscillator. This example starts by computing the system inputs and outputs in the time domain, emulating measurements. After applying the definition of the Z-transform to calculate the frequency-domain transfer function of the system, the example uses the functions tfestimate, modalfrf, and modalfit to estimate the transfer function from the simulated measurement data. The comparison between the outputs of these functions shows how you can retrieve the transfer function from system input/output data.
