The Measurement and Analysis of Torsional Vibration for Rotating Machinery

2013 ◽  
Vol 365-366 ◽  
pp. 750-753
Author(s):  
Wei Hao Yao ◽  
Ke Gang Zhao
Keyword(s):  
Torsional Vibration ◽  
Virtual Instrument ◽  
High Speed ◽  
Test System ◽  
Rotating Machinery ◽  
Detection Scheme ◽  
Frequency Detection ◽  
Measurement And Analysis ◽  
High Speed Data ◽  
Instrument Technology

In this paper, the virtual instrument technology is used in torsional vibration study to create a set of torsional vibration natural frequency detection scheme for rotating machinery which is based on the characteristics of controllable one-way overrunning clutch. Also, a test system that is highly sampling frequency, good accuracy and fast data processing capability is developed. This system consists of high-precision dynamic torque sensor, microprocessor-based high-speed data relay module, IPC-based workbench. Finally, the measured results and the calculated results were compared, and it shows that the measured and the calculated results come very close.

An Engine Dynamic Signal Testing System Based on Virtual Instrument Technology

2009 ◽  
Vol 16-19 ◽  
pp. 193-198 ◽  
Author(s):  
Ying Ji Liu ◽  
Feng Tian Cai ◽  
Wei Zhou ◽  
Xue Li Zhang ◽  
Tian Xia Zhang
Keyword(s):  
Virtual Instrument ◽  
High Speed ◽  
Computer Software ◽  
Digital Signal ◽  
Test System ◽  
Structure Design ◽  
Signal Acquisition ◽  
Instrument Technology ◽  
Dynamic Signal ◽  
Engine Dynamic

Aimed at the requirements of engine experimental research，a test system of engine dynamic signal was developed based on virtual instrument technology. The integral structure design of the system was given, the hardware is composed of sensors, signal conditioning module, high-speed data acquisition card and portable computer; the host computer software was developed with DASYLab, a virtual instrumentation tool. Its essential is to make good use of computer to achieve and extend functions of traditional instruments, by comprehensively using technologies of computer, digital signal processing, standard bus and software engineering method, functions of continuous multi channel sampling and multi type signal acquisition, and processing analysis were realized. The field test shows the system works reliably, development and application of this system can provide detailed experiment data and a new way in the field of engine power detection.

Test System for Mechanical Property of Geotextile Material Based on PCI-1714

2012 ◽  
Vol 455-456 ◽  
pp. 217-221
Author(s):  
Zhi Gang Liu ◽  
Qi Xiao Sun
Keyword(s):  
Mechanical Property ◽  
Data Acquisition ◽  
High Speed ◽  
Test System ◽  
Overall Design ◽  
Data Acquisition Software ◽  
Mechanics Performance ◽  
Data Acquisition Card ◽  
High Speed Data Acquisition ◽  
High Speed Data

A solution of intelligent test system for mechanical property of geotextile material which based on high speed data acquisition card PCI-1714 is introduced in this paper. Microprocessor and drive card PCI-1240 are also used to control and drive the test equipment. The article discussed in detail the system’s overall design, the hardware structure, software design, and process of data acquisition. Software is designed by Visual Basic 6.0. This paper research and implement on accurate measurement of mechanics performance of geotextile material.

scholarly journals Integrated Durability of Automobile Alternator Test System Design Based on LabVIEW

2014 ◽  
Vol 8 (1) ◽  
pp. 839-845 ◽  
Author(s):  
Wu Weibin ◽  
Feng Yue ◽  
Du Junyi ◽  
Xu Pengbo ◽  
Feng Yunlin ◽  
...  
Keyword(s):  
Data Acquisition ◽  
Automotive Industry ◽  
Virtual Instrument ◽  
Measurement Errors ◽  
High Speed ◽  
Performance Test ◽  
Test System ◽  
Electrical Performance ◽  
Durability Test ◽  
Limit Test

New standards in the automotive industry highlighted the situation of the actual operation of the alternator and a variety of harsh environment simulation limit test. Using new standards in the automotive industry as a guide, this article presents a virtual instrument based on the durability of automobile generator integrated test system. The design adopt virtual instrument technology in designing the system, Graphic language, LabVIEW is applied in writing measure-control program. The system uses a lot of features on LABVIEW, including Data acquisition, control of serials port, etc. Test implementation uses the host computer via RS232 and RS485 communication port and the data acquisition card, NI PCI- 6221, to control the frequency hybrid motor, temperature control box, electronic loads and other intelligent devices, and to simulate a variety of automotive alternator working conditions and real-time monitoring to monitor the status of generators. Using this system, two separate automobile alternators can be tested in terms of high-speed vehicle impact and high temperature durability test and electrical performance test and other tests at the same time. As a result, the generator speed measurement error is within 1%, the control error is within 2%, voltage and current measurement errors were within 0.5% and 0.4%, which meets the requirements.

Disquisition of Testing System for BMBS Vacuum Booster

2012 ◽  
Vol 190-191 ◽  
pp. 1351-1354
Author(s):  
Yan Shi ◽  
Yi Lu ◽  
Xue Ying Wang
Keyword(s):  
High Speed ◽  
Computer Control ◽  
Performance Testing ◽  
Test System ◽  
Testing System ◽  
Test Items ◽  
Sealing Performance ◽  
On Line ◽  
High Speed Data ◽  
Line Test

To solve the problem of testing BMBS (BLOW-OUT MONITORING AND BRAKE SYSTEM) vacuum booster performance, a double-station and on-line test system for BMBS vacuum booster was designed. It adopts high-speed data collection method and computer control technology. This system can test the performance in non-BMBS condition and BMBS condition. The test items mainly include dynamic characteristic and sealing performance under each condition. The double stations are independent and have no interference with each other. The system fills up the blank of performance testing about BMBS vacuum booster. To verify this system, experiments were conducted with the vacuum booster which installed the BMBS technology. The experiment results show that the system can do well in testing the performance of BMBS vacuum booster in high precision. The sealing performance resolution is 0.01kPa and the pressure resolution is 1N.

Design of Monitoring System for Frequency Converter Sets Based on PCI Bus

2011 ◽  
Vol 128-129 ◽  
pp. 1409-1412
Author(s):  
Xin Yu Yang ◽  
Pei Yuan Cheng ◽  
Xiao Quan Li
Keyword(s):  
Monitoring System ◽  
Virtual Instrument ◽  
High Speed ◽  
High Reliability ◽  
Frequency Converter ◽  
Test System ◽  
Pci Bus ◽  
Turbo Generator ◽  
The Status ◽  
Hardware Circuit

It is difficult to finish fully and professional testing about frequency converter sets when it was broken or repaired. Aimed at this problem, monitoring system for frequency converter sets is designed. Its hardware circuit is based on IPC platform and PCI bus and software platform is based on Visual Basic and VI (Virtual instrument) technology. It can finish controlling the work status and checking voltage, power etc. and temperature of key parts real-time about the set. Simultaneously it can give an alarm when the status is abnormal. Its results has characteristics of high reliability, high speed and intuitionistic. So it can improve efficiency of test system maximum and save repair expenditure. The system helps for improving reliability of gas turbo-generator set and power quality.

Design of Mechanical Vibration Test System Based on Virtual Instrument Technology

2011 ◽  
Vol 322 ◽  
pp. 291-295 ◽  
Author(s):  
Hua Zhao
Keyword(s):  
Data Acquisition ◽  
Virtual Instrument ◽  
Mechanical Vibration ◽  
Domain Analysis ◽  
Test System ◽  
Acquisition Time ◽  
Vibration Test ◽  
Time Frequency ◽  
Development Platform ◽  
Instrument Technology

With piezoelectric acceleration sensor, charge voltage filter amplifier, data acquisition card, PC and vibration experiment table for hardware development platform, and LABVIEW for software development platform, virtual instrument technology was applied to the design of mechanical vibration test system. This test system mainly consists of data acquisition, time domain analysis, amplitude domain analysis, frequency domain analysis, time-frequency analysis module. Experimental results indicate: The system not only can perform real-time data acquisition of multiple channels signal, waveform display, data storage, signal analysis, playback measurement and output printing etc, but also has good expansibility, high speed, high accuracy and friendly interface. It is suitable for engineering personnel and laboratory use.

Implementation of an Intelligent Integrated Detection System Based on Virtual Instrument for Different Missiles

2012 ◽  
Vol 490-495 ◽  
pp. 1063-1065 ◽  
Author(s):  
Xiao Long Zhang ◽  
Zhi Min Yao ◽  
Hong Yun Wang
Keyword(s):  
Virtual Instrument ◽  
Signal Analysis ◽  
Detection System ◽  
Test System ◽  
Software Implementation ◽  
Prototype System ◽  
Practical Applications ◽  
Automatic Test System ◽  
Instrument Technology ◽  
Integrated Detection

Aiming at the intelligent integrated detection System for test and measurement of many different missiles, utilizing the data acquisition technology, virtual instrument technology and signal analysis technology synthetically, in this paper, we introduced the system architecture and accomplished the hardware design and software implementation. Practical applications of the prototype system have proven that this intelligent integrated detection system has more powerful functions, better interaction and more convenient operation than the traditional automatic test system(ATS), it have met the needs of test and measurement of several different missiles

Development of the Measurement and Analysis System of Nanoparticles Size Distribution

2010 ◽  
Vol 121-122 ◽  
pp. 168-171 ◽  
Author(s):  
Zhen Mei Li ◽  
Wen Ge Li ◽  
Jin Shen ◽  
Wei Liu
Keyword(s):  
Light Scattering ◽  
Size Distribution ◽  
Virtual Instrument ◽  
High Speed ◽  
Photon Counting ◽  
Peak Position ◽  
Time Data ◽  
The Real ◽  
Measurement And Analysis ◽  
Analysis System

The measurement and analysis system of nanoparticles size distribution was developed by using virtual instrument technology, while the photon counting technology was applied in the system to replace the expensive correlator. High speed photon pulse counter was designed. The real-time data of nanoparticles dynamic light scattering were analyzed in the mixed program of MATLAB and LabVIEW, where the time autocorrelation functions of nanoparticles light scattering signals of monodisperse and polydisperse are reversed by NNLS arithmetic. Experiments results show that the peak position, peak width and symmetry of inverse distribution are very close to the real simulate particles.

The Measurement and Analysis System Development of 3D Roll Forming Machine Dynamic Characteristics Based on Virtual Instrument

2014 ◽  
Vol 889-890 ◽  
pp. 726-731
Author(s):  
Yuan Sheng Hu ◽  
Qiang Li ◽  
Yan Zhi Guan
Keyword(s):  
Dynamic Characteristics ◽  
Virtual Instrument ◽  
System Development ◽  
Three Dimensional ◽  
Field Measurements ◽  
Test System ◽  
Roll Forming ◽  
Development Platform ◽  
Measurement And Analysis ◽  
Analysis System

For the study dynamic characteristics of three-dimensional roll forming machine, this paper develops a dynamic characteristics measurement and analysis system of three-dimensional roll forming machine, which is based on the U.S. NI company software development platform, including the development of hardware and software part .The realization of dimensional roll forming machine dynamics parameters collection and analysis, the experiment proved that the test system can be easily field measurements demand dynamics parameters, to improve the three-dimensional roll forming machine precision and control accuracy to provide an experimental basis.

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