Development of a test bed for monitoring & control software of a ground station & its analysis by application of standard software metrics

2013 ◽  
Author(s):  
Shehryar Humayun ◽  
Mushtaque Hussain Soomro
Keyword(s):  
Software Metrics ◽  
Test Bed ◽  
Control Software ◽  
Its Analysis ◽  
Ground Station ◽  
Standard Software

Test-Bed Infrastructure for Industrial Control Systems Validation

2006 ◽  
Author(s):  
Emanuelle Carpanzano ◽  
Andrea Cataldo
Keyword(s):  
Control System ◽  
Control Systems ◽  
Agile Manufacturing ◽  
Industrial Plant ◽  
Small Scale ◽  
Automation System ◽  
Test Bed ◽  
Control Software ◽  
Logic Control ◽  
Process Simulator

To properly deal with the increasing complexity of industrial distributed and agile manufacturing control systems, the use of methods and tools that support the designer in the definition, implementation and verification of intelligent logic control software is more and more necessary. Nowadays, many different software tools are available to face the rapid prototyping and closed loop simulation based verification of an automation system control software. The possibility to validate the control strategies of an automation system for industrial plant during its design phases is very advantageous. In fact the control system validation on plant site is very expensive, both for the high man power costs and for the long time required to implement and test the software code implemented in the control system devices. Scope of this paper is to present the hardware/software infrastructure designed to interface an industrial PLC to a laboratory process simulator and to a real small scale plant, in order to validate the industrial PLC software control code before the real plant commissioning phase. In particular the PLC, communicating with its remote input/output terminal boards via Profibus, is firstly connected to the process simulator for a roughly control algorithm validation, secondly it is interfaced to a small scale plant so to deeply test the PLC logic control solution.

Study on the Multifunctional Bearing Test-Bed for Testing the Limit PV Performance

2008 ◽  
Vol 381-382 ◽  
pp. 203-206
Author(s):  
J.W. Yu ◽  
T. You ◽  
Xiao Fen Yu
Keyword(s):  
Working Conditions ◽  
Object Oriented ◽  
Test Bed ◽  
Load Spectrum ◽  
Control Software ◽  
Sliding Bearings ◽  
Limit Values ◽  
The Stability ◽  
And Control ◽  
Measurement And Control

So-called PV value can reflect the synthetic using performance of sliding bearings and the limit pressure of the lubricant. The newly developed multifunctional tester was introduced in this paper for investigating the PV limit values of bearings, in which the speed spectrum and load spectrum were first timely introduced to simulate the bearings' actual working conditions. In this test-bed, four samples, i.e., four friction couples can be dynamically and synchronously tested and measured. The developed measurement and control software based on object –oriented language has the functions of data collecting, processing, alarming and controlling etc. In the system, several measures have been taken to resist electromagnetism disturbances in both hardware and software parts. The disturbance signals have been effectively screened and restrained, so as to the stability and precision of the tested data have been greatly improved.

Development of RF System Performance Evaluation Test Set for KOMPSAT-2

2005 ◽  
Vol 277-279 ◽  
pp. 845-850
Author(s):  
Tae Youn Kim ◽  
Seong Bin Lim ◽  
Yong Sik Chun ◽  
Seok Weon Choi
Keyword(s):  
Test System ◽  
Advanced Technology ◽  
Test Case ◽  
Communication Link ◽  
Test Bed ◽  
Satellite Mission ◽  
Test Set ◽  
Rf System ◽  
Ground Station ◽  
Evaluation Test

The satellite RF system is an essential part of the control and management of a satellite from the ground station and provides a communication link during the entire satellite mission life. The RF system should be fully evaluated for reliability and stability on the ground, as defined by the requirements of the satellite mission. The evaluation of an RF system can be verified by measuring the RF link parameter and then comparing and analyzing the result with the RF system requirements. Since the system test for satellites requires advanced technology and has a high cost with limited time, however, it is difficult to access technically for many parts. This paper describes the design and verification of the RFTS (Radio Frequency Test Set) and the RTS (RFTS Test Software), which AITC developed in KARI to evaluate a satellite RF system. The developed test system was used to perform an RF functional test on an ETB (Engineering Test Bed), and the RFTS’s full functions were debugged to provide a reliable function for the KOMPSAT-2 Satellite Test. The RFTS showed a high degree of reliability, conformity and repeatability for each test case at any time. It is now being applied to the RF system evaluation test of KOMPSAT-2 FM during KOMPSAT-2’s integration and environment test phases. Hereinafter, this system can be applied to the next generation of satellites as well as to the RF payload system as a unique KOMPSAT series RF test system.

Light Optical Diffraction Studies of Macromolecular Ultrastructure

1970 ◽  
Vol 28 ◽  
pp. 258-259
Author(s):  
Glen B. Haydon
Keyword(s):  
High Resolution ◽  
Diffraction Analysis ◽  
Diffraction Pattern ◽  
Electron Micrographs ◽  
Optical Diffraction ◽  
Electron Micrograph ◽  
Its Analysis ◽  
Resolution Electron ◽  
Diffraction Patterns

Analysis of light optical diffraction patterns produced by electron micrographs can easily lead to much nonsense. Such diffraction patterns are referred to as optical transforms and are compared with transforms produced by a variety of mathematical manipulations. In the use of light optical diffraction patterns to study periodicities in macromolecular ultrastructures, a number of potential pitfalls have been rediscovered. The limitations apply to the formation of the electron micrograph as well as its analysis.(1) The high resolution electron micrograph is itself a complex diffraction pattern resulting from the specimen, its stain, and its supporting substrate. Cowley and Moodie (Proc. Phys. Soc. B, LXX 497, 1957) demonstrated changing image patterns with changes in focus. Similar defocus images have been subjected to further light optical diffraction analysis.

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