352-0535/02 – Measurement and Signal Processing (MaZS)
| Gurantor department | Department of Control Systems and Instrumentation | Credits | 5 |
| Subject guarantor | prof. Ing. Jiří Tůma, CSc. | Subject version guarantor | prof. Ing. Jiří Tůma, CSc. |
| Study level | undergraduate or graduate | Requirement | Compulsory |
| Year | 3 | Semester | summer |
| | Study language | Czech |
| Year of introduction | 2015/2016 | Year of cancellation | |
| Intended for the faculties | USP, FS | Intended for study types | Bachelor |
Subject aims expressed by acquired skills and competences
The main objective of the lecture on the technical diagnostics IV is to give students knowledge of basic properties transducers, sensors for noise and vibration diagnostics, as well as become familiar with the technique of noise, vibration and rotational speed measurements, the spectral analysis in the diagnosis of sliding and roller bearings, gear units and combustion engines. Another objective is to describe the basics of balancing rotors, evaluation of operational deflection shapes and modal analysis of machine components and structures. Understanding the methods used to analyze the diagnostic measurements in industrial applications. The aim is to reach independent decisions about the result of measurements and to assess the state machinery.
Teaching methods
Lectures
Individual consultations
Tutorials
Experimental work in labs
Project work
Summary
Students get knowledge, which is now routinely expect from mechanical engineers in testing labs, in design (engineering) offices, in the department for inspection and in quality control or diagnostics for maintenance. Students will learn how to perform frequency analysis and signal other procedures that are commonly used in the diagnosis of mechanical equipment via measurement speed, vibration and noise. Students will be familiar with the signatures of common defects in bearings, in gear units and in motors. The lectures are focused as well on measuring operational deflection shapes and modal analysis. Introduction course is a response to the penetration of electrical engineering in machines and requirements of market for engineering products in the countries of the European Communities.
Compulsory literature:
Recommended literature:
Tůma, J.: Vehicle gearbox noise and vibration, Wiley 2014.
BROCH, J.T. Mechanical vibration and shock measurements. Brüel & Kjaer , 1984.
Way of continuous check of knowledge in the course of semester
E-learning
Other requirements
Student has to prepare project.
Prerequisities
Subject has no prerequisities.
Co-requisities
Subject has no co-requisities.
Subject syllabus:
1. Sensors for experimental mechatronics and machine behavior (speed, force, moment, linear movements, rotational movements, approach, vibration, flow, pressure, sound pressure, sound intensity).
2. Methods of digital recording of measured data, digitization of signals, properties of A / D converters, multifunction cards and signal analyzers. Choice of sampling frequency, signal-to-noise ratio.
3. Evaluation of time-domain signals, effective values, limit values, level passages. Synchronous filtering.
4. Fourier transform and basics of signal frequency analysis (time window selection, overlay and averaging). Numerical calculation of FT.
5. Spectrum of selected signals (pink and white noise, harmonic signal modulation, phase and signal envelope).
6. Methods of measurement of frequency characteristics, their presentation and evaluation, vibration excitation.
7. Lasers for measurement of linear and angular oscillations.
8. Vibration of machines, composition of frequency spectra, multispektra. Operating shapes of vibrations.
9. Testing of products, machines for cyclic and random loading. Generating load processes for shakers and electro-hydraulic loaders. S-N curves, hypothesis to estimate the drawdown of damage.
Conditions for subject completion
Occurrence in study plans
Occurrence in special blocks
Assessment of instruction
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