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There are a total of 34 record(s) matching your query.
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Research study on stabilization and control. Modern sampled-data control theory: Stability analysis of the low cost large space telescope system
Author(s): Kuo, B. C.; Singh, G.
Abstract: The pointing stability of the low-cost large space telescope (LST) system was investigated. The low-cost LST is characterized by the use of reaction wheels for the generation of control torques. Because of the critical ...
NASA Center: NASA (non Center Specific)
Publication Year: 1975
Added to NTRS: 2008-07-01
Accession Number: 75N30955; Document ID: 19750022882; Report Number: NASA-CR-143933
Design of the large space telescope control system
Author(s): Kuo, B. C.; Singh, G.
Abstract: No Abstract Available
NASA Center: NASA (non Center Specific)
Publication Year: 1974
Added to NTRS: 2008-07-01
Accession Number: 75N70809; Document ID: 19750064561; Report Number: NASA-CR-120246
Research study on stabilization and control. Modern sampled-date control theory. Stability analysis of the low cost large space telescope system
Author(s): Kuo, B. C.; Singh, G.
Abstract: A mathematical model employing Fourier series is used to show quantization and reaction wheel friction nonlinearity in a telescope system for use in space. Block diagrams are used to illustrate the system. A discrete ...
NASA Center: NASA (non Center Specific)
Publication Year: 1975
Added to NTRS: 2008-07-01
Accession Number: 75N26938; Document ID: 19750018866; Report Number: NASA-CR-143871
Research study on stabilization and control modern sampled-data control theory. Design of the Large Space Telescope system
Author(s): Kuo, B. C.; Singh, G.
Abstract: The numerical technique is applied to the prediction of self-sustained oscillations in a two-axis model of the nonlinear system with sampled data. The sampled-data two-axis LST system model, and its stability equation are ...
NASA Center: NASA (non Center Specific)
Publication Year: 1974
Added to NTRS: 2008-07-01
Accession Number: 75N12669; Document ID: 19750004597; Report Number: NASA-CR-120534
Limit cycle analysis of large space telescope with CMG nonlinearity
Author(s): Seltzer, S. M.; Kuo, B. C.; Singh, G.
Abstract: The existence and characteristics of self-sustained oscillations were studied in the Large Space Telescope (LST) system due to the presence of nonlinear gimbal friction in the control moment gyroscopes (CMG's). A continuous ...
NASA Center: Marshall Space Flight Center
Publication Year: 1975
Added to NTRS: 2008-07-01
Accession Number: 75N31965; Document ID: 19750023892; Report Number: NASA-TM-X-64939, PAPER-74-874
Research study on stabilization and control: Modern sampled-data control theory. Design of the large space telescope system
Author(s): Kuo, B. C.; Singh, G.
Abstract: Conditions of self-sustained oscillations in a two-axis model of the nonlinear LST system are studied. The describing function of the CMG frictional nonlinearity of the LST system is used for the analysis, as well as ...
NASA Center: NASA (non Center Specific)
Publication Year: 1975
Added to NTRS: 2008-07-01
Accession Number: 75N15056; Document ID: 19750006984; Report Number: NASA-CR-120580
The optical pumping of alkali atoms using coherent radiation from semi-conductor injection lasers and incoherent radiation from resonance lamps
Author(s): Singh, G.
Abstract: An experimental study for creating population differences in the ground states of alkali atoms (Cesium 133) is presented. Studies made on GaAs-junction lasers and the achievement of population inversions among the hyperfine ...
NASA Center: NASA (non Center Specific)
Publication Year: 1973
Added to NTRS: 2008-06-27
Accession Number: 74N23083; Document ID: 19740014970; Report Number: NASA-CR-139008
Continuous and discrete describing function analysis of the LST system
Author(s): Kuo, B. C.; Singh, G.; Yackel, R. A.
Abstract: A describing function of the control moment gyros (CMG) frictional nonlinearity is derived using the analytic torque equation. Computer simulation of the simplified Large Space Telescope (LST) system with the analytic torque ...
NASA Center: NASA (non Center Specific)
Publication Year: 1973
Added to NTRS: 2008-06-27
Accession Number: 74N31907; Document ID: 19740023794; Report Number: NASA-CR-120321
Research study on stabilization and control modern sampled-data control theory
Author(s): Kuo, B. C.; Singh, G.
Abstract: The methods of continuous and discrete describing function analysis were applied to predicting the existence of self-sustained oscillations in the single-axis model of the large space telescope system with nonlinear control ...
NASA Center: NASA (non Center Specific)
Publication Year: 1974
Added to NTRS: 2008-06-27
Accession Number: 74N33945; Document ID: 19740025832; Report Number: NASA-CR-120455
Research study on stabilization and control: Modern sampled-data control theory. Continuous and discrete describing function analysis of the LST system
Author(s): Kuo, B. C.; Singh, G.
Abstract: The dynamics of the Large Space Telescope (LST) control system were studied in order to arrive at a simplified model for computer simulation without loss of accuracy. The frictional nonlinearity of the Control Moment ...
NASA Center: NASA (non Center Specific)
Publication Year: 1974
Added to NTRS: 2008-06-27
Accession Number: 74N30302; Document ID: 19740022189; Report Number: NASA-CR-120331
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