Computation of regions of constrained stability for nonlinear control systems
Computation of regions of constrained stability for nonlinear control systems
Gelopulos, D. P.↗
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Translational forces on the Mariner V spacecraft stemming from the attitude control system.
Translational forces on Mariner 5 stemming from attitude control system studied to determine trajectory for scientific and operational purposes
Bourke, R. D.↗
Translational forces on Mariner V from the attitude control system.
Translational forces on Mariner 5 stemming from attitude control system, determining trajectory for scientific and operational purposes
Bourke, R. D.↗
New model performance index for engineering design of control systems
Performance index includes a model representing linear control-system design specifications. Based on a geometric criterion for approximation of the model by the actual system, the index can be interpreted directly in terms of the desired system response model without actually having the model's time response.
Source record↗
Description and performance of the Saturn launch vehicle's navigation, guidance, and control system
Analysis of Saturn launch vehicle navigation, guidance, and control system
Haeussermann, W.↗
S-4B orbital workshop attitude control system study
Saturn S-4B orbital workshop attitude control system analysis
Bunyak, R. S.↗
The influence of terminal conditions on the structure of optimum-control systems
Terminal states and time specifications influence on optimum control systems, using Pontryagin principle for boundary value problems application
Latour, P. R.↗
Spacecraft experiment pointing and attitude control system Patent
Development of spacecraft experiment pointing and attitude control system
Kurzhals, P. R.↗
Magnetic attitude control system for HEAO Final report
Development of magnetic attitude control system for High Energy Astronomy Observatory satellite
Mobley, F. F.↗
Synchronous servo loop control system Patent
Design and development of synchronous servo loop control system
Stone, F. A.↗
IMP-1-D-4.5.5 - Description and summary of qualification testing of the IMP-1 attitude control system and Yo-Yo despin system
Results and description of qualification tests of attitude control system and yo-yo despin system in flight configuration as installed on IMP-1 spacecraft
Metzger, J. R.↗
Absolute stability analysis of attitude control systems for large boosters
Absolute stability analysis of attitude control systems for large launch vehicles
Seltzer, S. M.↗
Digital filter for reducing sampling jitter in digital control systems Patent
Digital filter for reducing jitter in digital control systems
Anderson, T. O.↗
Computer requirements analysis and trade-offs for on-board space guidance and control systems
Computer requirements of self contained guidance, navigation and control system onboard manned orbital space station
Jurison, J.↗
Temperature control system with a pulse width modulated bridge
A temperature control system, which includes a modified wheatstone bridge with a resistive-capacitive (RC) circuit in one leg of the bridge, is disclosed. The RC circuit includes a resistor which provides an effective resistance as a function of its absolute resistance and the on-time to off-time ratio of pulses supplied to a switch connected across it. A sawtooth voltage is produced across the RC circuit. The voltage is compared with the voltage across a temperature sensor with heat being applied during each pulse period portion when the sawtooth voltage exceeds the voltage across the temperature sensor.
Heyser, R. C.↗
New thruster configurations for spacecraft attitude control systems
Design characteristics of thruster configurations for spacecraft attitude control systems investigated. A standard six engine approach is developed and used as the basis for comparison of different thruster configurations. These methods include cases of both skewed and non-skewed configurations. Simulation results are used as a basis for comparison, critical thruster design factors being given based on an analysis of the data.
Colburn, B. K.↗
Optimal regulator or conventional? Setup techniques for a model following simulator control system
Optimal regulator technique was compared for determining simulator control system gains with the conventional servo analysis approach. Practical considerations, associated with airborne motion simulation using a model-following system, provided the basis for comparison. The simulation fidelity specifications selected were important in evaluating the relative advantages of the two methods. Frequency responses for a JetStar aircraft following a roll mode model were calculated digitally to illustrate the various cases. A technique for generating forward loop lead in the optimal regulator model-following problem was developed which increases the flexibility of that approach. It appeared to be the only way in which the optimal regulator method could meet the fidelity specifications.
Deets, D. A.↗
Performance analysis and simulation of the SPS reference phase control system
Key results pertinent to the SPS reference phase control system design are summarized. These results are a consequence of extensive system engineering tradeoffs provided via mathematical modeling, optimization, analysis and the development/utilization of a computer simulation tool called SOLARSIM.
Lindsey, W. C.↗