A computer-aided design technique for sampled-data control systems
Computerized design technique for sampled data control systems
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Computerized design technique for sampled data control systems
Filtering, prediction, and smoothing procedures for multi-stage linear dynamic systems using sampled data with sequentially correlated noise
Complex convolution integral applied to Laplace transform expressions in sampled data theory
Optimal bounded control of linear sample-data systems in terms of control matrices and regions of application
General theory for X transform and its use in sample data systems analysis
Stochastic approximation applied to sampled data system parameters including sampling interval
Frequency time domain stability criteria for sampled data systems with monotonic nonlinearity
Parameter estimation of sampled data control systems by stochastic approximation
Nonlinear control of pulse amplitude modulated sampled-data systems
The Google Moon Apollo Lunar Sample Data Integration project is a continuation of the Apollo 15 Google Moon Add-On project, which provides a scientific and educational tool for the study of the Moon and its geologic features. The main goal of this project is to provide a user-friendly interface for an interactive and educational outreach and learning tool for the Apollo missions. Specifically, this project?s focus is the dissemination of information about the lunar samples collected during the Apollo missions by providing any additional information needed to enhance the Apollo mission data on Google Moon. Apollo missions 15 and 16 were chosen to be completed first due to the availability of digitized lunar sample photographs and the amount of media associated with these missions. The user will be able to learn about the lunar samples collected in these Apollo missions, as well as see videos, pictures, and 360 degree panoramas of the lunar surface depicting the lunar samples in their natural state, following collection and during processing at NASA. Once completed, these interactive data layers will be submitted for inclusion into the Apollo 15 and 16 missions on Google Moon.
Effect of random sampling interval on sampled data model of human operator in compensatory tracking
Linear single loop sampled data time delay feedback systems stability analysis
The Astromaterials Acquisition and Curation Office at NASA's Johnson Space Center (JSC) is the designated facility for curating all of NASA's extraterrestrial samples. The suite of collections includes the lunar samples from the Apollo missions, cosmic dust particles falling into the Earth's atmosphere, meteorites collected in Antarctica, comet and interstellar dust particles from the Stardust mission, asteroid particles from the Japanese Hayabusa mission, and solar wind atoms collected during the Genesis mission. To support planetary science research on these samples, NASA's Astromaterials Curation Office hosts the Astromaterials Curation Digital Repository, which provides descriptions of the missions and collections, and critical information about each individual sample. Our office is implementing several informatics initiatives with the goal of better serving the planetary research community. One of these initiatives aims to increase the availability and discoverability of sample data and images through the use of a newly designed common architecture for Astromaterials Curation databases.
MARSYAS is a computer-aided control system design package for the simulation and analysis of dynamic systems. In the summer of 1991 MARSYAS was updated to allow for the analysis of sampled-data systems in terms of frequency response, stability, etc. This update was continued during the summer of 1992 in order to extend further MARSYAS commands to the study of sampled-data systems. Further work was done to examine the computation of OPENAT transfer functions, root-locii and w-plane frequency response plots.
Simultaneous optimization of presampling filter and postsampling linear filter in sample data systems with read-in jitter
Special purpose rapid computer for providing an on-line solution to the sampled-data time-optimal- control problem in which inputs are subjected to amplitude constraints
Sampled-data regulator for investigating both steady-state and transient responses of respiratory system of humans to reduced oxygen at fixed levels of carbon dioxide
Sampled data regulator for maintenance of constant alveolar carbon dioxide during steady state and transient ventilatory responses to hypoxic stimulation