Vishay 2310 Guía de usuario descargar pdf (Pagina 11)

Familiarity of computerized data acquisition system is cultivated in required courses in

the majority of programs investigated, and a significant amount of programs teaches the use of

traditional tools such as oscilloscope and function generator. Other frequently taught topics

include frequency response and Fourier transformation, experiments in fluid mechanics, and

material testing. In the programs where control theory is a required content, experimentation

laboratories often include a section in control as well.

However, there are at least seven programs among the investigated ones that do not

dedicate coursework to address experimentation methodology and techniques, or introduces

these contents in a half course laboratory focused in other subjects such as material property.

2.3 Current Design and Implementation of the Laboratories

The laboratories cover measurements of resistance, calibration of pressure sensors,

measurement of pressure with strain gauges, measurement of vibration with strain gauges, and

calibration of thermistors.

Data acquisition system is used in all the laboratories, where LabVIEW programs are

used to facilitate data acquisition and processing. Mathematical programs are used in data

analysis. A formal lab report is required for each laboratory.

The lengths of the laboratories vary from one three-hour lab period to four periods.

During the lab periods, the instructor explains the procedures and important issues, and helps

students with trouble shooting when they are performing the experiment.

The Strain and Pressure Measurement laboratory teaches pressure characterization of

thin-wall vessel, uncertainty analysis of the result is also required. Combined with the signal

conditioning system and analog/digital converter, strain gauges are utilized to detect the change

in surface strain when the soda cans are opened; the strains are transferred to sensitive readings

in voltage with a Wheatstone bridge, and then used to determine the pressure difference after it is

amplified with a pre-amplifier.

The Vibration Measurement Laboratory focuses on dynamic measurement of a free-

vibrating cantilever beam, the measured characteristics are then used to estimate the elastic

modulus of the beam; uncertainty analysis of the results is also required. Same set-up is used to

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Vishay 2310 Guía de usuario Pagina 11