LMS Test.Lab Order Tracking offers a solution for advanced harmonic analysis on rotating equipment in any operating condition. Order sections are obtained from data sampled synchronously with rpm, giving leakage-free, razor-sharp order cuts, while any additional online processing present in LMS Test.Lab Signature Analysis is also available. LMS Test.Lab Order Analysis is an ideal solution whenever fast run-ups and coast-downs may cause order leakage based on fixed sampled data or whenever orders are closely spaced. Raw time data can be recorded in parallel for off-line re-processing. Data acquisition supports any signal conditioning offered by LMS SCADAS front-ends.
Spectral data and orders can be measured and processed repeatedly in accordance with custom procedures, making use of pre-defined templates with specified display layouts and measurement settings. The template may contain the complete measurement campaign, covering multiple measurement scenarios. Throughout the execution of the campaign, the user will have feedback on the progress of particular measurements and on the campaign in general.
This solution supports acquisition during run-ups, run-downs or sequences of both, at user-defined time or rpm intervals or at predefined increments of any other slowly varying quantity, like e.g. engine torque. It further supports spectra averaging during (semi-)stationary operating conditions. Derived tacho channels provide online order monitoring, related to rotational speeds that are linked via fixed gear ratios. These channels support order analysis in case of fully variable (CVT) gear ratio. The online processing and visualization formats include RMS-levels, waterfalls, order, frequency, octave and psycho-acoustic sections, as well as statistical quantities. With online derived channels, engineers can calculate and visualize simulated channels in real-time by recombining signals measured on physical channels using both basic and advanced mathematical operations. With multiple sample rates, the amount of saved data can be reduced by acquiring vibration channels at a lower sampling rate, while keeping the high sample rate for acoustic channels. Online reference curves can be used as targets to validate the current design or to check multiple run repeatability.
Time histories for all channels can be validated immediately after measurements. The solution provides any processing function needed to gain deeper insight into physical processes, analyzing individual recordings or batches of time histories from multiple measurements. Intelligent displays provide transparent coupling of measured results to underlying data, helping fast and convenient in-depth result analysis.
