Results of Human-in-the-Loop Testing of the Force/Moment Accommodation Feature using the Special Purpose Dexterous Manipulator Ground Test Bed

2000 ◽  
Author(s):  
Raja Mukherji ◽  
John Lymer
Keyword(s):  
Test Bed ◽  
Human In The Loop ◽  
Force Moment ◽  
Ground Test

An Insight into the Features of the OAO-C Thermal Design

1973 ◽  
Vol 95 (4) ◽  
pp. 1039-1047 ◽  
Author(s):  
H. Fine ◽  
J. Quadrini ◽  
S. Ollendorf
Keyword(s):  
Thermal Control ◽  
Astronomical Observatory ◽  
Thermal Design ◽  
Test Bed ◽  
Large Space ◽  
Flight Data ◽  
The Earth ◽  
Ground Test ◽  
Earth Observation Satellite ◽  
Insight Into

The Orbiting Astronomical Observatory (OAO)-C was successfully launched into 400-nautical mile circular orbit on August 21, 1972. For this spacecraft, a unique sensitivity approach to the thermal design was developed which resulted in a predictal design—the merits of which should be considered for application on future spacecra. The OAO-C is also serving as a test bed for the evaluation of thermal control hardware. To provide flight data for space program applications, experiments for a new coating and four different heat pipe designs are on this spacecraft. The data derived from OAO-C will be extremely valuable for such future programs as the Large Space Telescope (LST) and the Earth Observation Satellite (EOS). This paper will describe the detailed of the sensitivity design approach and thermal control hardware. For all aspects discussed, a comparison of pertinent analysis, ground test data, and flight data [1] will be given.

Visual Measurement for On-Orbit Reflector Assembly

2015 ◽  
Vol 27 (5) ◽  
pp. 480-488 ◽  
Author(s):  
Shin-ichiro Nishida ◽  
◽  
Heihachiro Kamimura ◽  
Keyword(s):  
Servo Control ◽  
Robot Arm ◽  
Visual Servo ◽  
Large Telescope ◽  
Test Bed ◽  
Large Space ◽  
Visual Servo Control ◽  
Visual Measurement ◽  
Space Telescope ◽  
Ground Test

<div class=""abs_img""> <img src=""[disp_template_path]/JRM/abst-image/00270005/03.jpg"" width=""300"" /> Artist concept of in-orbit assembly</div>In Earth orbit, a space telescope is free from any absorption or disturbances from the Earth's atmosphere. Therefore, a large space telescope is planned for the future. We discuss the assembly of a large telescope reflector performed by a robot arm. For the assembly work, positioning of the arm using visual servo control to colored markers is proposed. A ground test-bed is used to test the characteristics of the new image processing method for colored markers. The results of the tests are also given.

scholarly journals Sensor-driven, human-in-the-loop lighting control

2017 ◽  
Vol 50 (5) ◽  
pp. 660-680 ◽  
Author(s):  
F Tan ◽  
D Caicedo ◽  
A Pandharipande ◽  
M Zuniga
Keyword(s):  
Control System ◽  
Visible Light ◽  
Visible Light Communication ◽  
User Preferences ◽  
Sensor Data ◽  
Test Bed ◽  
Lighting Control ◽  
Human In The Loop ◽  
Light Sensor ◽  
Lighting Systems

Smart indoor lighting systems use occupancy and light sensor data to adapt artificial lighting in accordance with changing occupancy and daylight conditions. Such systems can be designed to reduce lighting energy consumption significantly. However, these systems cannot account for individual user preferences at the workplace in real time. We propose a sensor-driven, human-in-the-loop lighting system that incorporates user feedback in addition to occupancy and light sensor inputs. In this system, luminaires transmit unique visible light communication identifier signals. By processing the image captured by a smartphone camera, a user obtains two pieces of information: visible light communication identifiers of luminaires in the vicinity and average image pixel value. A control algorithm is designed that incorporates these user inputs along with occupancy and light sensor inputs to determine the dimming levels of the luminaires to achieve illumination levels acceptable to users. We compare the performance of the proposed lighting control system with a sensor-driven lighting control system in an office test bed.

Fleet and Usage Management System (FUMSTM) Technologies for Gas Turbines

2006 ◽  
Author(s):  
Hesham Azzam ◽  
Peter Knight ◽  
Roger Ellison ◽  
Ken Bryant ◽  
Jonathan Cook ◽  
...  
Keyword(s):  
Gas Turbines ◽  
Management System ◽  
Fleet Management ◽  
Test Bed ◽  
Engine Vibration ◽  
Ground Test ◽  
Intelligent Management ◽  
Thermal Transient ◽  
The Uk ◽  
Engine Components

Working closely with the UK Ministry of Defence (MOD), Smiths has developed a Fleet and Usage Management System (FUMS™) to enable proactive fleet management and continuous diagnostic/prognostic improvements through a single fusion and decision support platform for helicopters, aeroplanes and engines. This paper gives an overview of a suite of FUMS™ algorithms that have been successfully developed for gas turbine applications and validated using a large volume of engine data. The system has been used to analyse both airborne acquired data and ground test-bed data. The system algorithms have been targeted at evaluating the following: stresses of compressor components, thermal transient stresses of turbine components, fatigue. Total Accumulated Cycles (TAC), engine vibration, neural network based performance/degradation and, Usage Indices (UIs) that summarise engine parameters and at the same time indicate the life/condition of engine components. By operating on data from the same engine on two test-beds, the system can be used to normalise the engine vibration and reconcile any differences in vibration-based acceptance/rejection criteria: these differences can result in the acceptance of an engine for on-wing operation at one site and the rejection of the engine at another site. The paper also gives an overview of the FUMS™ intelligent management software, which has allowed the MOD to plug-in 3rd party applications. In this way, MOD can evaluate, verify and procure engine technologies developed by various suppliers and build engine applications from these technologies without the need for software re-writing.

Mechanical Design to Adapt Changes to Existing Universal Test Bed Facility of Turbojet Engine for the Turbofan Engine

2014 ◽  
Vol 983 ◽  
pp. 374-378
Author(s):  
Fawwad Ahmed ◽  
Ahmad Aizaz ◽  
Zahid Mahmood
Keyword(s):  
Mechanical Design ◽  
Test Bed ◽  
Turbofan Engine ◽  
Design Modification ◽  
Universal Test ◽  
Physical Measurements ◽  
Cad Models ◽  
Ground Test ◽  
Solid Works ◽  
Minimum Stress

The existing Universal Test Bed (UTB) is a facility to ground test Turbojet Engines before installation on the aircraft. This work provides a feasibility study to adapt changes to this UTB for the Turbofan Engine. Necessary design modification of existing UTB is performed by applying propulsive and structural analysis for the adaptation of Turbofan engine. Physical measurements of the UTB and the mounts of Turbofan Engine reveal their mutual compatibility. Based on these measurements, six different CAD models are generated in Solid Works® and analyzed in ANSYS® Workbench. After grid independence check, validation of the model with applied loads and the boundary conditions was done through comparison of analytical calculations with those of a simplified CAD model. Based on minimum stress vis-à-vis maximum Factor of Safety (FOS), the best design is finally selected through this research.

Ground test bed design for self-forming network in disaggregated satellites system

2016 ◽  
Vol 57 (4) ◽  
pp. 1072-1086 ◽  
Author(s):  
Pengfei Liu ◽  
Lei Yang ◽  
Xiaoqian Chen
Keyword(s):  
Test Bed ◽  
Ground Test

scholarly journals Design and research of a center adjustment mechanism based on missile ground test stand

2021 ◽  
Vol 2125 (1) ◽  
pp. 012066
Author(s):  
Gao-lin Ren ◽  
Xue-wei Zhang ◽  
Qiang Wei ◽  
Chen-hui Lei ◽  
Zhen Zhang ◽  
...  
Keyword(s):  
Cost Saving ◽  
Test Stand ◽  
Practical Significance ◽  
Test Bed ◽  
Positioning Accuracy ◽  
Structure Selection ◽  
Adjustment Mechanism ◽  
Ground Test ◽  
Standard Structure ◽  
Installation Time

Abstract For a missile ground test stand that requires a lot of core installation, such as the inner and outer labyrinth centering installation. There are some problems in the installation process, such as complex installation process, difficult adjustment, long installation time, poor positioning accuracy and so on. This paper takes the inner and outer labyrinth centering installation as an example, through non-standard structure selection and processing, designed a set of centering adjustment mechanism, through the field installation comparison, it is concluded that the new centering adjustment mechanism has the advantages of high positioning accuracy, simple operation, greatly saving working time, quick and simple adjustment, etc. The new centripetal adjustment mechanism is also simple, efficient and cost saving for other tasks that need centripetal adjustment on missile ground test bed. Its design and research have high engineering practical significance.

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