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System and method for vibration analysis and phase analysis of vibration waveforms using dynamic statistical averaging of tachometer data to accurately calculate rotational speed

A technique of vibration analysis, tachometer, applied in the direction of using wave/particle radiation, vibration measurement in solids, devices using optical methods, etc., can solve problems such as imbalance, vibration, looseness, etc.

Active Publication Date: 2011-06-08
JOHN FLUKE MFG CO INC
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Problems solved by technology

However, faulty machine conditions such as unbalanced, misaligned, bearing ware, loose and eccentric shafts can cause more severe vibration

Method used

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  • System and method for vibration analysis and phase analysis of vibration waveforms using dynamic statistical averaging of tachometer data to accurately calculate rotational speed
  • System and method for vibration analysis and phase analysis of vibration waveforms using dynamic statistical averaging of tachometer data to accurately calculate rotational speed
  • System and method for vibration analysis and phase analysis of vibration waveforms using dynamic statistical averaging of tachometer data to accurately calculate rotational speed

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Embodiment Construction

[0014] The following text and drawings are exemplary and should not be construed as limiting. Numerous specific details are described in order to provide a thorough understanding of the present disclosure. However, in some instances, certain conventional or traditional details have not been described in order not to obscure the description.

[0015] There is no intention to further limit the scope of the present disclosure, and the instruments, devices, methods and related results according to the embodiments of the present disclosure are given below. Reference in the specification to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment of the present disclosure. The appearances of the word "in one embodiment" in various places in the specification do not necessarily all refer to the same embodiment, nor do they necessarily refer to separate or alter...

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Abstract

The present invention discloses a system and method for vibration analysis and phase analysis of vibration waveforms using dynamic statistical averaging of tachometer data to accurately calculate rotational speed. Vibration analysis is performed on a machine having a variable frequency drive by using a tachometer to monitor rotational speed of the drive shaft and a logic device to calculate speed parameters associated with the drive shaft using the tachometer data. The speed parameters include a maximum speed, a minimum speed, and an average speed of the drive shaft. By correlating the vibration spectra of the motor drive with the speed parameters, machine faults can be identified based upon the energy distribution in the spectra. Further, vibration waveforms from two or more locations on the machine can be sequentially acquired through synchronous triggering by using a pulse edge of a stable tachometer signal. The waveforms can be compared to determine a phase difference to help in identifying any machine faults that may be present.

Description

[0001] Horizontal citations to related applications [0002] This application requires the title of "SYSTEM AND METHOD FOR VIBRATION ANALYSIS AND PHASE ANALYSIS OF VIBRATION WAVEFORMS USING DYNAMIC STATISTICAL AVERAGING OF TACHOMETER DATA TO ACCURATELY CALCULATE ROTATIONAL SPEED" submitted on October 26, 2009. Shock Wave Vibration Analysis and Phase Analysis System and Method for Calculation of Rotational Speed), Indian Provisional Application No. 2591 / CHE / 2009, the entirety of which is incorporated herein by reference. technical field [0003] The present disclosure generally relates to vibration analysis and phase analysis of shock waves. More specifically, the present disclosure relates to accurate velocity calculations using dynamic statistical averaging of tachometer data combined with vibration analysis and phase analysis of shock waves. Background technique [0004] Mechanical vibrations can occur in various types of rotating equipment such as electric motors, fans, ...

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Application Information

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IPC IPC(8): G01H9/00G01P3/36
CPCG01H1/003
Inventor 拉梅什·巴布·斯里尼瓦萨尼迪恩·安东尼·约瑟
Owner JOHN FLUKE MFG CO INC
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