A high-speed realtime vibration measusement and analysis system based on DSP technology

2006 ◽  
Author(s):  
Guoming Song ◽  
Houjun Wang ◽  
Jingfeng Wang
Keyword(s):  
High Speed ◽  
Analysis System ◽  
Dsp Technology

scholarly journals The Optimization of Alternating Current Electrospun PA 6 Solutions Using a Visual Analysis System

Polymers ◽  
2021 ◽  
Vol 13 (13) ◽  
pp. 2098
Author(s):  
Tomas Kalous ◽  
Pavel Holec ◽  
Jakub Erben ◽  
Martin Bilek ◽  
Ondrej Batka ◽  
...  
Keyword(s):  
High Voltage ◽  
High Speed ◽  
Visual Analysis ◽  
Polyamide 6 ◽  
Alternating Current ◽  
Sine Wave ◽  
Electrospinning Process ◽  
Camera System ◽  
Polymeric Solutions ◽  
Analysis System

The electrospinning process that produces fine nanofibrous materials have a major disadvantage in the area of productivity. However, alternating current (AC) electrospinning might help to solve the problem via the modification of high voltage signal. The aforementioned productivity aspect can be observed via a camera system that focuses on the jet creation area and that measures the average lifespan. The paper describes the optimization of polyamide 6 (PA 6) solutions and demonstrates the change in the behavior of the process following the addition of a minor dose of oxoacid. This addition served to convert the previously unspinnable (using AC) solution to a high-quality electrospinning solution. The visual analysis of the AC electrospinning of polymeric solutions using a high-speed camera and a programmable power source was chosen as the method for the evaluation of the quality of the process. The solutions were exposed to high voltage applying two types of AC signal, i.e., the sine wave and the step change. All the recordings presented in the paper contained two sets of data: firstly, camera recordings that showed the visual expression of electrospinning and, secondly, signal recordings that provided information on the data position in the signal function.

Measurement of spontaneous blinks in patients with Parkinson's disease using a new high-speed blink analysis system

2017 ◽  
Vol 380 ◽  
pp. 200-204 ◽  
Author(s):  
Naoko Kimura ◽  
Akihide Watanabe ◽  
Kazutaka Suzuki ◽  
Haruyoshi Toyoda ◽  
Naotoshi Hakamata ◽  
...  
Keyword(s):  
Parkinson’S Disease ◽  
Parkinson's Disease ◽  
High Speed ◽  
Analysis System

Effect of Pantograph and Bogie on Interior Noise of High-Speed Train in Tunnel

2013 ◽  
Vol 664 ◽  
pp. 191-196
Author(s):  
You Gang Xiao ◽  
Yu Shi
Keyword(s):  
High Speed ◽  
Sound Pressure ◽  
Broad Band ◽  
Pressure Level ◽  
Channel Noise ◽  
High Speed Train ◽  
Noise Sources ◽  
Vehicle Noise ◽  
Measurement And Analysis ◽  
Analysis System

For clarifying the noise in tunnel affected by pantograph and bogie, which are the most important noise sources, the noises near pantograph and bogie in a high-speed train were tested by multi-channel noise measurement and analysis system in tunnel, and compared with those measured outside the High-speed train and on an open field. The results show that the interior vehicle noise is spatially non-homogeneous in the whole carriage, the larger sound pressure level (SPL) near pantograph are next to ceiling, and near bogie next to floor. The noise spectra show a broad band feature, and dominated by the frequency contents among 100Hz-2kHz, so the countermeasures against noise should be within these range.

Validation of High Speed Motion Analysis System to Measure Maximal Speed

2010 ◽  
Vol 42 ◽  
pp. 686
Author(s):  
Nidhi Gupta ◽  
Govindasamy Balasekaran ◽  
Visvasuresh Victor Govindaswamy
Keyword(s):  
Motion Analysis ◽  
High Speed ◽  
Motion Analysis System ◽  
Maximal Speed ◽  
Analysis System

scholarly journals A large capacity, high-speed multiparameter multichannel analysis system

1982 ◽  
Vol 201 (1) ◽  
pp. 261-279 ◽  
Author(s):  
R.W. Hendricks ◽  
P.A. Seeger ◽  
J.W. Scheer ◽  
S. Suehiro
Keyword(s):  
High Speed ◽  
Large Capacity ◽  
Multichannel Analysis ◽  
Analysis System

Integrated Aerodynamic and Geometric Modeling for Hypersonic Vehicle Design

2000 ◽  
Author(s):  
Amarshi A. Bhungalia ◽  
Jeffrey V. Zweber ◽  
Mark D. Stevenson
Keyword(s):  
Wind Tunnel ◽  
Design Process ◽  
Geometric Modeling ◽  
High Speed ◽  
Vehicle Design ◽  
Viscous Effects ◽  
Aerodynamic Analysis ◽  
Hypersonic Aircraft ◽  
Arbitrary Body ◽  
Analysis System

Abstract In the past, hypersonic aircraft and space launch vehicle designs were dependent on empirical methods that were developed and verified using wind tunnel testing. This process was time consuming and extremely expensive. The vehicle designers were forced to look for improved ways to assess the design because they needed to cut the design costs. This led to the development of high-speed aerodynamic analysis codes. These codes cut the design costs by reducing the number of wind tunnel tests that were required (and eliminating the associated time and expense). Currently, there are many different aerodynamic analysis codes, of different fidelities, available for use in the design process. One of these codes is the Supersonic/Hypersonic Arbitrary Body Program (S/HABP). Versions of S/HABP are implemented with varying pre and post-processing applications. Two of the common ones are the Aerodynamic Preliminary Analysis System (APAS) and Viscous Effects on Complex Configurations (VECC). Both APAS and VECC are stand-alone specialized codes that are not well integrated into the design process. This paper documents an application that was developed to improve the process of generating an aerodynamic analysis mesh for S/HABP from the geometric modeling activities that are needed for the overall vehicle design process.

Sign in / Sign up

Export Citation Format

Share Document