Comparative analysis of digital data conversion algorithms in NC systems of machine tools

2021 ◽  
Author(s):  
Yakov Liberman ◽  
Konstantin Letnev
Keyword(s):  
Comparative Analysis ◽  
Machine Tools ◽  
Digital Data ◽  
Data Conversion

Providing Configurability and Plug-and-Play Capability to Simple Sensors: A Step towards Smart Sensors for Smart Factories

2012 ◽  
Vol 162 ◽  
pp. 597-606 ◽  
Author(s):  
Mircea Murar ◽  
Stelian Brad
Keyword(s):  
Manufacturing Systems ◽  
Cost Effective ◽  
Digital Data ◽  
Sensor System ◽  
Data Conversion ◽  
Plug And Play ◽  
Analog To Digital ◽  
Configuration Data ◽  
Smart Factories ◽  
Distributed Manufacturing Systems

A modality to boost up the abilities of simple sensors for providing extended configurability options and plug-and-play capability along with great scalability, integrability, rapid customization and modularity is reported in this paper. An embedded architecture that requires both electronic and software designs is employed for expanding sensor capability. Self-integration, configuration, data computation from the sensor, analog-to-digital data conversion and data processing relative to configuration options are investigated. Based on the approach proposed, an embedded sensor-system, consisting of a network of microcontrollers and sensors capable to respond to configurability and fast integrability requirements, is built and tested within this research. Tests have shown the smart sensor-system is functional, feasible, cost-effective, easy-to-use and highly reconfigurable. Integration of such sensors within reconfigurable, autonomous and distributed manufacturing systems is thus possible.

scholarly journals Design of an Experiential Learning Course in Sensors, Measurement and Instrumentation

2012 ◽  
Author(s):  
Vincent Chan ◽  
Ahmad Ghasempoor ◽  
Devin Ostrom
Keyword(s):  
Experiential Learning ◽  
Digital Data ◽  
Data Conversion ◽  
Approach To Learning ◽  
Labview Software ◽  
Engineering Program ◽  
Experiential Approach ◽  
Hands On ◽  
Analogue To Digital ◽  
Modern Instrumentation

Recently a new course in Sensors and Measurement was introduced to the Mechatronics Option in the Mechanical Engineering Program at Ryerson University. In order to enhance the learning and comprehension of fundamental concepts in measurement and instrumentation, experiential learning was introduced through the extensive use of “hands-on” laboratories to demonstrate the theory taught in the lectures. In the course, the application of modern instrumentation and measurement of both static and dynamic mechanical systems are covered through the use of interfacing of hardware sensors with Labview software. Students learn about transducers, signal conditioning, and analogue to digital data conversion through the writing of their own Labview programs which is used to collect and perform preliminary analysis of the data. These labs are designed to follow Kolb’s experiential learning cycle, where students learn the theory, are introduced to the physical equipment, plan how they are going to program the Labview software to collect the data that they require, and then test their programs in the laboratory. Finally, after the lab, students are required to analyse the data they collected and write a lab report. By taking this experiential approach to learning, the course was successful in teaching and reinforcing the required principles to students.

Theoretical and Experimental Researches on the Balancing Systems of Machine-Tools Feed Kinematic Chains

2014 ◽  
Vol 555 ◽  
pp. 497-504
Author(s):  
Dan Prodan ◽  
Anca Bucuresteanu ◽  
Emilia Balan ◽  
Adrian Motomancea
Keyword(s):  
Comparative Analysis ◽  
Machine Tools ◽  
Kinematic Chains ◽  
Experimental Researches ◽  
Modern Machine

In this paper, the authors present some of the theoretical and experimental researches conducted in recent years in the field of large masses shifted vertically. The paper starts with a technical-economical comparative analysis of the hydraulic and mechanical balancing. The following are the most commonly used systems of hydraulic balancing for modern machine-tools, the CNC ones especially. Finally the paper presents some of the experimental achievements materialized in hydraulic balancing units for machine-tools.

scholarly journals Design and Implementation of Robust Digital Watermarking using Hybrid technique for Copyright Protection Digital data

2021 ◽  
Vol 12 (3) ◽  
pp. 4839-4845
Author(s):  
Lakshman Ji Et. al.
Keyword(s):  
Image Processing ◽  
Comparative Analysis ◽  
Digital Watermarking ◽  
Copyright Protection ◽  
High Frequency ◽  
Error Rates ◽  
Digital Data ◽  
Hybrid Technique ◽  
Scene Detection ◽  
Design And Implementation

In this research paper, we concerned with the creation of a comprehensive digital watermarking framework based on DWT. In order to improve imperceptibility and robustness, the watermark is inserted only in chosen frames. The picked frames are the frames in which a change of scene happens. The key objective, therefore, is to detect the correct transformation of the scene. The Scene Shift Detector identifies correct frames that have been modified using the successive histogram discrepancy process. Two schemes proposed using the same method of scene detection. Both suggested schemes achieve a good watermark rating with good (PSNR) valuesThere, Because the watermark integration is done exclusively on the scene with low and high frequency DWT subbands, the image processing assaults, geometric aggressions, JPEG compression, high normalised image attacks are immune,and low-bit error rates (BER). Comparative analysis of two algorithms is also carried out.

scholarly journals Audio Watermarking Schemes: A Comparative Analysis

2020 ◽  
Vol 4 (4) ◽  
pp. 57-61
Author(s):  
Jasmine Jolly ◽  
Mehbooba P Shareef
Keyword(s):  
Comparative Analysis ◽  
Auditory System ◽  
Copyright Protection ◽  
Digital Images ◽  
Video Watermarking ◽  
Audio Watermarking ◽  
Digital Data ◽  
Secret Key ◽  
Human Auditory System ◽  
Copyright Violation

The growth of internet and its reachability to all sectors of people have never been greater. Internet has become the best marketplace, the best library and may be the best guide for everything. But this revolution comes with some bigger problems. One of the most challenging problems among them would be copyright protection of digital data being transferred over internet. Digital images, videos and audios undergo illegal re-production and re-distributions, tampering and other acts of copyright violation. This is proved to have leading the film and other prominent industries to loss of millions of dollars per year. Encrypting the data provides security to it. In this case only people who pay to buy the secret key that should be used for decryption can use the data. But the problem is that once decrypted, the data can be re-produced into any number of copies and can be re-distributed without any permission from the author. Watermarking is an intelligent solution for this problem where the presence of watermark can be checked to distinguish pirated copies from the actual ones. A lot of methods have been developed for image and video watermarking, but the research on audio watermarking started a little bit later. The reason might be the fact that audio watermarking is tedious compared to image and video as Human Auditory System (HAS) is more sensitive compared to Human Visionary System. So ensuring the imperceptibility of audio watermarks is a tougher task. In this thesis various audio watermarking schemes introduced so far in the literature and their merits and demerits are studied.

IMPROVEMENT OF METHODICAL SUPPORT IN OPERATION SETUP OF UNIVERSAL MACHINE-TOOLS AT MOTOR CAR REPAIR COMPANIES

2021 ◽  
Vol 2021 (6) ◽  
pp. 36-46
Author(s):  
Andrey Fot ◽  
Vladimir Rassoha ◽  
Evgeniy Pen'kov
Keyword(s):  
Comparative Analysis ◽  
Machine Tools ◽  
Numerical Experiments ◽  
High Performance ◽  
Operation Time ◽  
Gear Train ◽  
Labor Intensity ◽  
Universal Machine ◽  
Gear Trains ◽  
Definition Of

The investigation purpose: simplification and ensuring tooling high performance of two-pair gear trains in machines with change gears. Methods used: numerical experiments for the characteristics definition of change gear sets in gear trains, a comparative analysis of different sets characteristics, a result visualization in a table form. Relevance of the method offered is substantiated with considerable labor intensity in the definition of the gear combination in gear trains by existing methods based on tables use mainly through possible way selection. Novelty: there are offered special algorithms of setup calculations decreasing operation time for the choice of gear combinations of gear trains. Basic results: there are developed computer programs for the definition of gear train combinations required and an electronic directory for machine-tool two-pair gear train setups recommended for use by workers of technological departments and in design service in production activities of engineering and motor car repair companies, in research centers and colleges (in thesis investigations, in training processes of engineering experts).

Sign in / Sign up

Export Citation Format

Share Document