Dynamic data acquisition, reduction, and analysis for the identification of high-speed compressor component post-stability characteristics

1987 ◽  
Author(s):  
S. DVORAK ◽  
W. HOSNY ◽  
W. STEENKEN ◽  
J. TAYLOR
1992 ◽  
Vol 35 (5) ◽  
pp. 21-26
Author(s):  
Allan Piersol

The structural responses produced by the operation of pyrotechnic devices (commonly called pyroshocks) constitute one of the most difficult types of dynamic data to accurately measure and analyze. For this reason, a separate appendix devoted solely to pyrochock data acquisition and analysis problems has been included in a proposed military handbook on Guidelines for Dynamic Data Acquisition and Analysis. This paper summarizes the recommendations concerning pyroshock data given in the final draft of that proposed military handbook.


Author(s):  
R. J. Trippett

A unique rotor dynamic data acquisition system is described to control the gathering and display of rotor displacement data measured at rotor speeds up to 70 000 r/min. The first published results measured with this system are demonstrated with plots of measured transient shaft motion after a sudden increase in shaft imbalance at speeds up to 44 500 r/min. The displacements of the rotor in the forms of Lissajous plots with and without a squeeze film damper are presented at four axial shaft locations below and above the shafts critical speeds. The blade-loss, dynamic test rig is also described.


1990 ◽  
Vol 87 (S1) ◽  
pp. S135-S135
Author(s):  
Harry Himelblau ◽  
James H. Wise ◽  
Allan G. Piersol ◽  
Max R. Grundvig

Author(s):  
Roger G. Harker ◽  
Gary W. Handelin

There are many benefits available through on-line machinery condition monitoring during steady state operation. However, certain dynamic vibration data is only available during a machine’s start-up and shutdown. In the past, we have limited acquisition and reduction of this dynamic data to start-up commissioning, or while troubleshooting a specific problem. This paper explores new techniques available to automate start-up and shutdown dynamic data acquisition. It then describes an effective on-line machinery information system using these techniques.


2014 ◽  
Vol 635-637 ◽  
pp. 705-710
Author(s):  
Yun Shi ◽  
Li Li Pang

In recent years, the exploitation and utilization of groundwater resources in the development of society plays a very important role. From the view of groundwater monitoring system, there are still a lot of problems, such as obsolete monitoring equipment, imperfect monitoring system. To solve these problems, by conducting studies of groundwater dynamic data acquisition and transfer of technology, research and development suited to China's national conditions groundwater monitoring series of instruments. Development of multi-level and multi-source remote management software base on network, build a set of groundwater dynamic data acquisition, storage, transmission, management, and remote control of the information service platform. It has been applied in a number of major projects for the construction and operation of the groundwater monitoring network in China to provide reliable monitoring equipment and management service software.


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