In this dataset we provide the source code we used for the evaluation of the involution delay model. Analog simulations (SPICE) serve as golden reference for the digital predictions. For comparison also the commonly used inertial delay is included.

Due to non-disclosure agreements only the source files are included. The tools and the respective libraries have to be provided by the user.

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The data set contains electrical and mechanical signals from experiments on three-phase induction motors. The experimental tests were carried out for different mechanical loads on the induction motor axis and different severities of broken bar defects in the motor rotor, including data regarding the rotor without defects. Ten repetitions were performed for each experimental condition.

Instructions: 

Experimental Setup:

The experimental workbench consists of a three-phase induction motor coupled with a direct-current machine, which works as a generator simulating the load torque, connected by a shaft containing a rotary torque wrench.

- Induction motor: 1hp, 220V/380V, 3.02A/1.75A, 4 poles, 60 Hz, with a nominal torque of 4.1 Nm and a rated speed of 1715 rpm. The rotor is of the squirrel cage type composed of 34 bars.

- Load torque: is adjusted by varying the field winding voltage of direct current generator. A single-phase voltage variator with a filtered full-bridge rectifier is used for the purpose. An induction motor was tested under 12.5, 25, 37.5, 50, 62.5, 75, 87.5 and 100% of full load.

- Broken rotor bar: to simulate the failure on the three-phase induction motor's rotor, it was necessary to drill the rotor. The rupture rotor bars are generally adjacent to the first rotor bar, 4 rotors have been tested, the first with a break bar, the second with two adjacent broken bars, and so on rotor containing four bars adjacent broken.

Monitoring condition:

All signals were sampled at the same time for 18 seconds for each loading condition and ten repetitions were performed from transient to steady state of the induction motor.

- mechanical signals: five axial accelerometers were used simultaneously, with a sensitivity of 10 mV/mm/s, frequency range from 5 to 2000Hz and stainless steel housing, allowing vibration measurements in both drive end (DE) and non-drive end (NDE) sides of the motor, axially or radially, in the horizontal or vertical directions.

- electrical signals: the currents were measured by alternating current probes, which correspond to precision meters, with a capacity of up to 50ARMS, with an output voltage of 10 mV/A, corresponding to the Yokogawa 96033 model. The voltages were measured directly at the induction terminals using voltage points of the oscilloscope and the manufacturer Yokogawa.

Data Set Overview:

-          Three-phase Voltage

-          Three-phase Current

-          Five Vibration Signals

 

Acknowledgements:

            The database was acquired in the Laboratory of Intelligent Automation of Processes and Systems and Laboratory of Intelligent Control of Electrical Machines, School of Engineering of São Carlos of the University of São Paulo (USP), Brazil.

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1013 Views

The Scaling number are presented in a single figure

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46 Views

The Scaling number are presented in a single figure

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Measurement method and Built-In Self-Test (BIST) circuit architecture exploiting Compressive Sampling for frequency response characterization of Digital-to-Analog Converters

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The dataset contains some tests which were performed over composite material samples, propagating Lamb waves using PZT transducers.

Instructions: 

The files are .tdms. Please open them using a tdms reader (i.e., the tdms reader for excel). Each file contains 144 signals which come from Lamb waves propagated through composite samples.

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Videosupplement for the reports [Gradov et al., 2010; Adamovich et al., 2014]. For exaple, see (in open access) article Adamovich E.D. [NON-STANDARD EQUIPMENT FOR NEW BIOACUSTIC METROLOGY] // Biomedical Engineering and Electronics]. - 2017. - Issue 1. - DOI: 10.6084/m9.figshare.4879859 [in Russian] {URL: http://biofbe.esrae.ru/pdf/2017/1/1090.pdf} .

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Modified characteriograph-assisted testings of spectrozonal analog lab-on-a-chip under laser beams

 

Acknowledgements:

  • “Development of the novel physical methods for complex biomedical diagnostics based on position-sensitive mapping with the angular resolution at the tissue and cellular levels using analytical labs-on-a-chip” (RFBR grant # 16-32-00914) [6 838,27 $ per year; 2016-2017];
  • “Lab-on-a-chip development for personalized diagnostics” (FASIE grant 0019125) [3 039,00 $ per year; 2016-2017].
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LF-module-assisted analog lab-on-a-chip measurements with R- (650 nm), G- (532 nm), B- (405 nm) laser sources

 

00:59 - Wavelenth: 650 nm (laser diode);

01:25 - Wavelenth: 405 nm (DPSSL);

01:43 - Wavelenth: 532 nm (DPSSSL);

 

Acknowledgements:

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Testings of spectrozonal analog lab-on-a-chip with angle-sensitive pixels (ASP) using diode laser sources in combined nanosecond reflectometric and stroboscopic oscilloscopic measurements.

 

FILE 1: Combined nanosecond reflectometric and stroboscopic oscilloscopic analysis for RF lab-on-a-chip.mp4

00:15 - Wavelength: 405 nm (DPSS);

00:57 - Wavelength: 650 nm (laser diode source);

 

FILE 2: Analog angle-sensitive pixel lab-on-a-chip testing using nanosecond stroboscopic oscilloscope.mp4

00:20 - Zero Point Calibration (ZPC);

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