Instrument optimization in parallel test system development

2008 ◽  
Author(s):  
Lei-gang Hu ◽  
Ming-qing Xiao
Keyword(s):  
System Development ◽  
Test System ◽  
Parallel Test ◽  
Instrument Optimization

Microphone High-Temperature Test System Development Based on PID Control

2014 ◽  
Vol 912-914 ◽  
pp. 1294-1298
Author(s):  
Li Yan Zhao
Keyword(s):  
High Temperature ◽  
System Development ◽  
Test System ◽  
Lower Efficiency ◽  
Temperature Function ◽  
Control Center ◽  
Marketing Application ◽  
High Temperature Operation ◽  
Very High ◽  
Temperature Test

With PID as its control center, this system overcomes the uncontrol of temperature, lower efficiency, difficult operation and other drawbacks occurring in precious microphone high-temperature test system. Characterized by excellent adaptability, automatic heating and constant temperature function, and simple operation, the high-temperature test system can meet the special requirements during microphone high temperature operation, evaluate the phase, frequency response, background noise and other product indexes in a high temperature ambient, and possess a very high marketing application value.

Multibus Based ECU Online Function Test System Development

2012 ◽  
Vol 630 ◽  
pp. 325-330 ◽  
Author(s):  
Pan Feng Wang ◽  
Yu Tian Zhu ◽  
Hao Wu ◽  
Bo Xie ◽  
Xian Yuan Gong
Keyword(s):  
Communication Protocol ◽  
System Development ◽  
Test System ◽  
Vehicle Control ◽  
Batch Test ◽  
High Quality ◽  
Test Board ◽  
Function Test ◽  
Pcb Testing

As the key part of vehicle control, ECU must be tested after manufacturing. This online function test system aims to automatically test the hardware and software of ECU PCB after they are welded. Ａ test system consisting of upper PC, test board, and tested ECU is built. According to the feature of the ECU (mutibus based, hardware and software included), the communication protocol, as well as testing software for upper and lower devices is developed. This system is easy to be applied and expanded in related ECU PCB testing. Batch test with this test system for newly-produced ECU is implemented, which ensures high quality and stability of the products.

Coherence Analysis and Control of Multi-Exciter Vibration Test System

2013 ◽  
Vol 401-403 ◽  
pp. 1005-1009
Author(s):  
Zheng Tao Yan ◽  
Shao Chun Ding
Keyword(s):  
Control System ◽  
System Development ◽  
Response Spectrum ◽  
Test System ◽  
Partial Coherence ◽  
Vibration Test ◽  
Test Field ◽  
And Control ◽  
Drive Signals ◽  
Test Control

Multi-exciter vibration test control system is the core of the multiple shaker vibration test, and multi-exciter vibration test control technology has become the hot point of vibration test field. Based on coherence principles, the coherence of two exciters control system was tested, the introduction of noise signal reduces the control coherence between the response spectrum and partial coherence between response and the corresponding drive signal. By means of increasing the coherence between drive signals, the control coherence between the response spectrum can be raised and control performance of system can be Improved. The above means could provide technical support for multi-exciter vibration test system development.

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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