Application of a Programmable Partial Discharge Calibrator

2014 ◽  
Vol 526 ◽  
pp. 288-291
Author(s):  
Yun Hu ◽  
Xing Zhang ◽  
Wei Dong Zhang ◽  
Qing Sen Sun ◽  
Ling Yu Cao ◽  
...  
Keyword(s):  
Test Performance ◽  
Pulse Sequence ◽  
Partial Discharge ◽  
Opposite Polarity ◽  
Measuring System ◽  
Device Under Test ◽  
System Behavior ◽  
Resolution Time ◽  
Measuring Systems ◽  
Random Pulse

This paper presents the application of a programmable partial discharge calibrator, which used to test the performance of four partial discharge measuring systems by injecting a program controlled known charge sequence into the device under test. Performance of linearity, response to opposite polarity pulses, pulse resolution time and response to random pulse sequence are compared and the results obtained show that the tests prescribed by the standards do not fully characterize the partial discharge measuring system behavior. A random partial discharge pulse sequence generated by this calibrator can help to evaluate those systems.

Homing Sensor System Design for a 2D Long Range Nanopositioning Moving Platform

2014 ◽  
Vol 615 ◽  
pp. 57-62 ◽  
Author(s):  
Raquel Acero Cacho ◽  
Jose Antonio Albajez ◽  
José Antonio Yagüe-Fabra ◽  
Marta Torralba ◽  
Margarita Valenzuela ◽  
...  
Keyword(s):  
Sensor System ◽  
Measuring System ◽  
Experimental Characterization ◽  
Measuring Systems ◽  
Precision Measuring ◽  
Atomic Force ◽  
Ultra Precision ◽  
Moving Platform ◽  
Sensor System Design

The nanotechnology field has been developing strongly in recent years and ultra-precision measuring systems are nowadays required. A new two-dimensional moving platform with 50x50 mm range of travel, nanometer resolution and sub micrometer accuracy is being designed by the authors in order to be integrated with an Atomic Force Microscope (AFM). In this work the definition, design and experimental characterization of a homing sensor system for this 2D moving platform is presented. The homing sensor system will allow the generation of an absolute 2D reference for the platform (X-Y axis and θz rotation), defining an initial cero for the measuring system, which is based on laser encoders.

Identifying Energy Efficiency Potentials by Applying Flexible Measuring Systems

2014 ◽  
Vol 655 ◽  
pp. 47-52 ◽  
Author(s):  
Moritz Hamacher ◽  
Johannes Boehner ◽  
Arnim Reger
Keyword(s):  
Energy Efficiency ◽  
Energy Savings ◽  
Measurement Data ◽  
Measuring System ◽  
Use Case ◽  
Measuring Systems ◽  
Flow Rates ◽  
Efficiency Measures ◽  
Sensor Signals ◽  
Detailed Level

This paper presents a flexible measuring system to identify energy efficiency potentials in the context of the ISO 50001 standard. On the basis of five essential requirements the flexible measuring system was structured into 4 modules which can be separately extended or modified. As the flexibility was in focus of the development this system it is able to measure the energy consumption on a very detailed level of the components of a machine. In addition it can also acquire measurement data of different other sensor signals like temperatures, flow rates etc. To evaluate the usability of the system in order to identify energy efficiency measures a use case was conducted. Results of the measurement data as well as possible energy savings of the investigated machinery are discussed at the end of this paper.

Mechatronic Elements for Measuring Systems

2013 ◽  
Vol 199 ◽  
pp. 332-337
Author(s):  
Vytautas Giniotis ◽  
Mindaugas Rybokas ◽  
Gintaras Dmitrijev ◽  
Deividas Sabaitis ◽  
Lauryna Šiaudinytė ◽  
...  
Keyword(s):  
Signal Processing ◽  
Angular Position ◽  
Linear Measurement ◽  
Angle Measurement ◽  
Measuring System ◽  
Measurement Equipment ◽  
Measuring Systems ◽  
Ring Lasers ◽  
Angle Measuring ◽  
Complicated Task

This presentation deals with a new application of mechatronic means for angle measuring system; it can be applied in precision instrumentation and measurement equipment. Precise angle measuring is based on usage of angle measurement standards such as polygons, precision indexing tables and circular scales. Ring lasers and precision rotary encoders can also be used for this purpose as well as test benches created for angle calibration. Many angular and linear measurement transducers or encoders are used in industry and machine engineering for the position and displacement measurement. The accuracy of angular position fixed by means of these devices reach approximately 0.3" 0.1" (arc second). Control of their accuracy parameters is complicated task consisting from some high requirements needed for rotation, positioning, signal processing, object adjustment and data processing.

Closed horizontal wire loop as a low–pass filter in tem measuring systems

2020 ◽  
Author(s):  
Nikolay O. Kozhevnikov ◽  
Keyword(s):  
Frequency Response ◽  
High Frequency ◽  
External Noise ◽  
Measuring System ◽  
Electromagnetic Noise ◽  
Measuring Systems ◽  
Pass Filter ◽  
Low Pass Filter ◽  
Low Pass ◽  
Horizontal Wire

The paper discusses the possibility of using a closed horizontal loop in a TEM measuring system to reduce the external high–frequency electromagnetic noise induced in a receiving loop. It is shown that the effect of an additional loop on the frequency response of the TEM measuring system is similar to that of a low–pass filter. In order to effectively reduce external noise, one should locate the auxiliary loop as close as possible to the receiver one.

Assumptions of Centering – Leveling Device Application in Mechatronic Angle Measuring System

2015 ◽  
Vol 220-221 ◽  
pp. 391-395
Author(s):  
Lauryna Šiaudinytė ◽  
Deividas Sabaitis ◽  
Mindaugas Rybokas ◽  
Domantas Bručas
Keyword(s):  
Measurement Accuracy ◽  
Angle Measurement ◽  
Measuring System ◽  
Measuring Systems ◽  
Measured Object ◽  
Preliminary Results ◽  
Device Application ◽  
Angle Measuring ◽  
Slight Movement ◽  
Further Development

This paper deals with the presentation of the new centering – leveling device developed in Vilnius Gediminas Technical University. Precision angle measuring systems are always combined of many mechanisms and devices which influence angle measurement accuracy. Therefore, every one of them has to be investigated separately. This device can be used as a separate device to perform a slight movement of measured object or it can be used as a part of mechatronic angle measuring system. This paper presents preliminary results of centering – leveling device minimum pitch determination and analysis of further development of this device as a part of mechatronic angle measuring system.

The Study of Denoising Algorithm for Partial Discharge Signal Based on the Wavelet

2014 ◽  
Vol 1070-1072 ◽  
pp. 994-1000
Author(s):  
Lu Li ◽  
Guo Qing Jiang ◽  
Tian Ye Niu ◽  
Yi Wang ◽  
Yong Lu ◽  
...  
Keyword(s):  
Mobile Communication ◽  
Partial Discharge ◽  
Pulse Signal ◽  
Digital Technique ◽  
External Interference ◽  
Pulse Interference ◽  
Communication Signal ◽  
Valid Data ◽  
Random Pulse ◽  
Huge Challenge

Since the strong coupling property between partial discharge and external interference, how to obtain an acceptable Resolution is a huge challenge during partial discharge measure. In terms of interference suppression, many methods associated with analog and digital technique are devised. Whatever the methods are, the way to eliminate pulse interference is the toughest task due to the closest feature in the respect of time and frequency field compared with partial discharge. In this paper, we propose a wavelet based interference separation method to separate partial discharge signal compounding with random pulse signal, mobile communication signal and white noise, providing valid data for the following partial discharge measurement. Both simulation and practical results verify the effectiveness of our proposed method.

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