Design of Test and Adjustment System for Coordinator of Infrared Seeker

2013 ◽  
Vol 336-338 ◽  
pp. 1003-1007
Author(s):  
Chi He ◽  
Zheng Guo Dai ◽  
Guang Ling Dong ◽  
Chao Feng Huang ◽  
Hong Qiang Wei ◽  
...  
Keyword(s):  
Virtual Instrument ◽  
High Speed ◽  
Integrated Control ◽  
Integrated Design ◽  
Infrared Seeker ◽  
Instrument Technology ◽  
Overall Performance ◽  
Adjustment System ◽  
Vision Module ◽  
Test Control

Test and adjustment system of coordinator (T&ASC) is, virtual instrument technology based, developed. PXI measurement control platform, turntable system, target simulator and air source equipment are integrated in hardware design. Multithreading, IMAQ Vision module and DLL techniques are used in software programming. Technical difficulties as synchronous receiving of RS422 data with high speed, direct display of LVDS video image and integrated control of turntable are solved. The system achieves the integrated design of test, control and adjustment function, which can carry out overall performance tests for coordinator automatically, and execute system parameters calibrating and adjusting intelligently.

Numerical Simulation Studies on the Performance of a Diffuser Attached With Last Stage Compressor Outlet Guide Vanes

2019 ◽  
Author(s):  
A. T. Sriram
Keyword(s):  
High Speed ◽  
Guide Vane ◽  
Integrated Design ◽  
Computational Domain ◽  
Simulation Studies ◽  
Allowable Limit ◽  
Guide Vanes ◽  
Compressor Rotor ◽  
Overall Performance ◽  
Last Stage

Abstract Combustor pre-diffuser is an important element connecting the compressor and combustor. The design of pre-diffuser should be in such a way that the flow velocity to be within allowable limit to hold the flame in the combustor and also it should recover pressure with less amount of total pressure loss. The general practice is to design the compressor and combustor separately for their performance. However, integrated design of outlet guide vanes and pre-diffuser is given importance, on nowadays, to improve the overall performance. Basically, the outlet guide vane blades are modified to improve the performance. In the present work, numerical simulations studies have been carried out for a well-known high speed compressor, NASA Stage 37, to identify the influence of blade parameters. The computational domain consists of compressor rotor, stator and combustor pre-diffuser. The stator blades serve as outlet guide vanes. In literature, studies were shown that there is improvement in introducing blade sweep. Also, blade lean was shown some advantages for the case of a pre-diffuser with axial inlet and radial outlet with flow turning. However, in the present case of axial inlet and axial outlet, blade lean has not shown improvement in the performance. A diffuser showing slightly unstable condition in the conventional design, Area Ratio (AR) of 1.5 in the present case, has shown improvement with the presence of blade sweep.

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.

Design the Integrated Multipurpose Instrument Calibrating Equipment Based on the PXI and LabVIEW

2014 ◽  
Vol 1037 ◽  
pp. 134-138
Author(s):  
Hai Ming Li ◽  
Li Mei Zhang ◽  
Feng Sa
Keyword(s):  
Virtual Instrument ◽  
Integrated Design ◽  
Functional Modules ◽  
Embedded Control ◽  
Working Standard ◽  
Control Computer ◽  
Database Technology ◽  
Instrument Technology ◽  
The Cost ◽  
Electrical Instrument

According to the function, the technical indexes and the cost control etc, we select the embedded control computer and virtual instrument module based on the PXI, and developed the integrated multipurpose instrument calibrating equipment, it realized the field measurement and calibration of the electrical instrument away from the laboratory. The system is designed based on PXI and LabVIEW, it uses virtual instrument technology, automatic control technology and database technology, by combining these functional modules of NI, we realized the calibration of electrical instruments such as digital multimeter, signal generator, oscilloscope and cymometer etc. The system is used integrated design, and it is very flexible, it can be popularized and applied as working standard to troops, factories or schools etc.

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.

Thermal/structural/optical integrated design for optical window of a high-speed aerial optical camera

2015 ◽  
Author(s):  
Gaopeng Zhang ◽  
Hongtao Yang ◽  
Chao Mei ◽  
Kui Shi ◽  
Dengshan Wu ◽  
...  
Keyword(s):  
High Speed ◽  
Integrated Design ◽  
Optical Window

Ultrasonic Imaging System Based on Virtual Instrument

2013 ◽  
Vol 663 ◽  
pp. 616-620
Author(s):  
Yu Gong ◽  
Yue Gang Hu ◽  
Guo Rong Song ◽  
Cun Fu He ◽  
Bin Wu
Keyword(s):  
Cross Section ◽  
Virtual Instrument ◽  
Imaging System ◽  
Complex Structures ◽  
Non Destructive Testing ◽  
Destructive Testing ◽  
Bulk Metal ◽  
Instrument Technology ◽  
Control Devices ◽  
Non Destructive

An imaging system of ultrasonic detection is presented for non-destructive testing (NDT) of complex structures by using virtual instrument technology. The control devices for C-scan as well as for imaging system are designed and manufactured. In the coarse scan mode with the scan step of 1 mm, the system can quickly give an image display of a cross section of 80 mm (L) ×60 mm (D) by one measurement. In the refined scan model, the system can show a refine image of the coin. All experiments on coin, bulk metal, and other forms of specimen verify the efficiency of the proposed method. The experimental results are accurate and reliable.

Research and Design on Monitoring System of Simple Bridge Based on Virtual Instrument Technology

2012 ◽  
Vol 490-495 ◽  
pp. 2624-2627
Author(s):  
Hua Wen Zheng ◽  
Liu Chang ◽  
Chuan Hui Wu ◽  
Yu Liang
Keyword(s):  
Monitoring System ◽  
Virtual Instrument ◽  
Analysis Data ◽  
System Structure ◽  
Time Data ◽  
Bridge Monitoring ◽  
Instrument Technology ◽  
Software And Hardware ◽  
Bridge Monitoring System ◽  
Research And Design

Design of a monitoring system based on virtual instrument technology for a simple bridge. This paper discusses the bridge monitoring system structure, software and hardware. The system can realize functions such as data acquisition, real-time data display, online analysis, offline analysis, data management and so on. Therefore, the monitoring system can be applied to a variety of bridges. The presented monitoring system has an important guidance meaning and practical value for bridge monitoring.

Measurement of Piezoelectric Strain Constant Based on Virtual Instrument Technology by Dynamic Method

2013 ◽  
Vol 333-335 ◽  
pp. 2422-2427 ◽  
Author(s):  
Long Biao He ◽  
Rui Wen Zhang ◽  
Hai Jiang Zhu ◽  
Ping Yang
Keyword(s):  
Virtual Instrument ◽  
Piezoelectric Ceramic ◽  
Automatic Measurement ◽  
Resonance Method ◽  
Automatic Measurement System ◽  
Measurement Results ◽  
Piezoelectric Strain ◽  
Good Repeatability ◽  
Instrument Technology ◽  
Dynamic Resonance

Characteristic parameters of piezoelectric ceramic have immeasurable effects on its performance. On the basis of the equivalent circuit of piezoelectric ceramic, dynamic resonance method is used to measure a series of cylindrical piezoelectric coefficients. Based on labview virtual instrument technology, an automatic measurement system with Agilent E4980A impedance analyzer is developed. The characteristics of impedance frequency response are recorded and the admittance circle is drawn. Then the major parameters including d33 are measured automatically and the reports are generated. Finally, E-S(Electric-Strain) method is adopted to verify the reliability of the measurement results. The results showed that the dynamic resonance method had good repeatability with the standard deviation no more than 1.66%, and the test values were in accord with the E-S method.

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