Penn State to offer acoustics and signal processing program

In this work, according to the characteristics of analytes, using XXY table and angular displacement tables to construct an automatic verticality measurement and correction system for three axes. For the purpose of measuring and correcting the spatial verticality of analytes in three axial directions, in this study, using a XXY table and angular displacement tables to set up a simulate carrier, these tables are driven by a four axes motion controller to adjust their posture, and then utilizing five laser displacement meters and self-developed signal processing program to carry out the measurement work. The system sets five laser displacement sensors in the surroundings of analytes respectively, and using the measured data by laser displacement sensors to calculate the yaw, pitch and roll angles of the analytes. Finally, by the four axes motion controller to adjust the motion of these tables, let laser light perpendicular to the surface of analytes as far as possible to achieve the goal of this system. After the experimental verification, the average error is not more than 0.0417 degrees.

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The Design of an Automated Plasma Diagnostic System – From Measurement to Signal Processing

MACRo 2015 ◽

10.1515/macro-2015-0005 ◽

2015 ◽

Vol 1 (1) ◽

pp. 49-59 ◽

Cited By ~ 1

Author(s):

Nimród Kutasi ◽

Lajos Kenéz ◽

Emőd Filep ◽

István Szöllösi ◽

László Jakab Farkas

Keyword(s):

Signal Processing ◽

Power Supply ◽

Plasma Nitriding ◽

Diagnostic System ◽

Nitriding Process ◽

Plasma Diagnostic ◽

Communication Interface ◽

Measurement Results ◽

Processing Program ◽

Different Temperatures

AbstractThe paper deals with the design of a new plasma diagnostic system consisting of a microcontroller based power supply for automatic control of the measurement using Langmuir probe, the communication interface of the power supply and the signal processing program. The main motivation for the design of the automated plasma diagnostic system was given by our research in different methods of plasma nitriding of steels. During the nitriding process, it is important to achieve information about the plasma, which is the medium where the heat-treatment process is going on. The new diagnostic system is able to perform measurements during the nitriding process, thus we can analyze the plasma at different temperatures and gas mixtures. The obtained voltage-current curves are recorded and transmitted to the computer, where further signal processing is performed. The paper presents the design of the power supply, the measurement results and the developed signal processing software.

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