25 research outputs found
Lunar surface exploration.
Special issue of the Bendix Technical Journal Volume 4 Number 2 Summer/Autumn 1971 on lunar exploration.ALSEP: The Scientific Voice of the Moon / L. R. Lewis -- Some Aspects of ALSEP Structural/Thermal Design / J. L. McNaughton -- The ALSEP Central Station Data Subsystem / W.M. Tosh -- The Passive Seismic Experiment / D. K. Breseke and J. Lewko, Jr. -- The Active Seismic Experiment / J. R. McDowell -- The Charged-Particle Lunar Environment Experiment / A. D. Robinson and L. D. Ferguson -- The Lunar Heat Flow Experiment / B. D. Smith -- The Laser-Ranging Retroreflector / J. M. Brueger -- ALSEP Human-Engineering Design Criteria / R. L. Redick -- ALSEP Data Management / C. R. Murtaugh, W. K. Stephenson, and B. L. Sharpe -- The Lunar Ejecta and Meteorites Experiment / L. Galan -- The Lunar Mass Spectrometer Experiment / R. D. Ormsby and C. E. DeHaven, Jr. -- The Lunar Seismic Profiling Experiment / J. E. Dye -- The Lunar Surface Gravimeter Experiment / H. K. Hsi and W. E. Crosmer
The Fifth NASA/DOD Controls-Structures Interaction Technology Conference, part 1
This publication is a compilation of the papers presented at the Fifth NASA/DoD Controls-Structures Interaction (CSI) Technology Conference held in Lake Tahoe, Nevada, March 3-5, 1992. The conference, which was jointly sponsored by the NASA Office of Aeronautics and Space Technology and the Department of Defense, was organized by the NASA Langley Research Center. The purpose of this conference was to report to industry, academia, and government agencies on the current status of controls-structures interaction technology. The agenda covered ground testing, integrated design, analysis, flight experiments and concepts
Using a mobile robot for hazardous substances detection in a factory environment
Dupla diplomação com a UTFPR - Universidade Tecnológica Federal do ParanáIndustries that work with toxic materials need extensive security protocols to avoid accidents.
Instead of having fixed sensors, the concept of assembling the sensors on a mobile
robot that performs the scanning through a defined path is cheaper, configurable and
adaptable. This work describes a mobile robot, equipped with several gas sensors and
LIDAR, that follows a trajectory based on waypoints, simulating a working Autonomous
Guided Vehicle (AGV). At the same time, the robot keeps measuring for toxic gases. In
other words, the robot follows the trajectory while the gas concentration is under a defined
value. Otherwise, it starts the autonomous leakage search based on a search algorithm
that allows to find the leakage position avoiding obstacles in real time. The proposed
methodology is verified in simulation based on a model of the real robot. Therefore, three
path plannings were developed and their performance compared. A Light Detection And
Ranging (LIDAR) device was integrated with the path planning to propose an obstacle
avoidance system with a dilation technique to enlarge the obstacles, thus, considering the
robot’s dimensions. Moreover, if needed, the robot can be remotely operated with visual
feedback. In addition, a controller was made for the robot. Gas sensors were embedded in
the robot with Finite Impulse Response (FIR) filter to process the data. A low cost AGV
was developed to compete in Festival Nacional de RobĂłtica (Portuguese Robotics Open)
2019 - Gondomar, describing the robot’s control and software solution to the competition.As indústrias que trabalham com materiais tóxicos necessitam de extensos protocolos
de segurança para evitar acidentes. Ao invés de ter sensores estáticos, o conceito de
instalar sensores em um robô móvel que inspeciona através de um caminho definido é mais
barato, configurável e adaptável. O presente trabalho descreve um robô móvel, equipado
com vários sensores de gás e LIDAR, que percorre uma trajetória baseada em pontos
de controle, simulando um AGV em trabalho. Em simultâneo são efetuadas medidas de
gases tóxicos. Em outras palavras, o robô segue uma trajetória enquanto a concentração
de gás está abaixo de um valor definido. Caso contrário, inicia uma busca autônoma
de vazamento de gás com um algoritmo de busca que permite achar a posição do gás
evitando os obstáculos em tempo real. A metodologia proposta é verificada em simulação.
TrĂŞs algoritmos de planejamento de caminho foram desenvolvidos e suas performances
comparadas. Um LIDAR foi integrado com o planejamento de caminho para propĂ´r
um sistema de evitar obstáculos. Além disso, o robô pode ser operado remotamente com
auxĂlio visual. Foi feito um controlador para o robĂ´. Sensores de gás foram embarcados no
robĂ´ com um filtro de resposta ao impulso finita para processar as informações. Um veĂculo
guiado automático de baixo custo foi desenvolvido para competir no Festival Nacional de
RobĂłtica 2019 - Gondomar. O controle do veĂculo foi descrito com o programa de solução
para a competição
Technology for large space systems: A bibliography with indexes (supplement 20)
This bibliography lists 694 reports, articles, and other documents introduced into the NASA Scientific and Technical Information System between July, 1988 and December, 1988. Its purpose is to provide helpful information to the researcher or manager engaged in the development of technologies related to large space systems. Subject areas include mission and program definition, design techniques, structural and thermal analysis, structural dynamics and control systems, electronics, advanced materials, assembly concepts, and propulsion
Proceedings of the Workshop on Identification and Control of Flexible Space Structures, volume 1
Identification and control of flexible space structures were studied. Exploration of the most advanced modeling estimation, identification and control methodologies to flexible space structures was discussed. The following general areas were discussed: space platforms, antennas, and flight experiments; control/structure interactions - modeling, integrated design and optimization, control and stabilization, and shape control; control technology; control of space stations; large antenna control, dynamics and control experiments, and control/structure interaction experiments