Stability of linear time-invariant systems.
Stability conditions for multiple input-output linear time invariant feedback systems, noting open loop system impulse response characteristics
Desoer, C. A.↗
SEARCH · Search NASA
Results for “SYSTEM STABILITY”
Search indexed NASA NTRS and DOE OSTI research on propulsion, heat transfer, battery materials and energy systems. Follow report and document links to the original sources.
Quote a phrase for an exact phrase match. Source license links do not imply unrestricted reuse.
On the stability of nonlinear, time-varying feedback systems.
Stability theory for nonlinear time-varying feedback control systems
CONTROL STABILITY↗
The stability of integral pulse frequency modulation systems.
Stability of single loop feedback circuit comprising integral pulse frequency modulator and stationary linear system
Cumpston, J. R.↗
Design, Development, and Flight Test Experience with Lifting Body Stability Augmentation Systems.
Lifting body stability augmentation systems design, development, ground tests and flight data including frequency response, limit cycle and structural resonance
Kotfila, R. P.↗
Stability of a class of coupled systems.
Stability in gyrodynamic control problems arising in coupled second order differential equations
Garrard, W. L.↗
Stability problems in randomly-excited dynamic systems.
Stability problems in randomly excited dynamic systems, discussing partial differential equations governing evolution of conditional probabilities and expectations
RANDOM PROCESS↗
Optimality and strong stability of control systems.
Control systems stability under perturbations using time optimal control
Lasalle, J. P.↗
The stability of dynamic systems with periodically varying parameters.
Dynamic systems stability with periodically varying parameters analyzed by Hill type infinite determinant, exemplifying helicopter rotor aeroelastic stability in forward flight
Crimi, P.↗
A new model for stability analysis in systems with pulse frequency modulators
Neural pulse frequency modulation system stability, using feedback control model
Monopoli, R. V.↗
Stability of dynamic systems with periodically varying parameters
Dynamic systems stability with periodically varying parameters analyzed by Hill type infinite determinant, exemplifying helicopter rotor aeroelastic stability in forward flight
Crimi, P.↗
Stability of linear time-invariant discrete systems
Stability of linear time invariant discrete systems including multiple poles
Desoer, C. A.↗
Stability of coupled-core nuclear reactor systems
Stability of coupled-core nuclear reactor systems
LIAPUNOV FUNCTION↗
Stability of a class of interconnected evolution systems
Stability conditions for a class of interconnected systems modeled by linear abstract evolution equations and a memoryless nonlinearity are derived. These conditions are stated in terms of the passivity of each of the subsystems and can be considered as a partial generalization of the hyperstability theorem. A Liapunov function approach is used in the proof without requiring the positive definiteness of the Liapunov function. Application to the robustness analysis of the infinite-dimensional linear quadratic regulator is also discussed.
Wen, John T.↗
On the stability constraints and oscillatory behavior of coupled systems
Stability constraints for two general forms of coupled systems of second order nonlinear differential equations
Aggarwal, J. K.↗
A throat-bypass stability-bleed system using relief valves to increase the transient stability of a mixed-compression inlet
A stability-bleed system was installed in a YF-12 flight inlet that was subjected to internal and external airflow disturbances in the NASA Lewis 10 by 10 foot supersonic wind tunnel. The purpose of the system is to allow higher inlet performance while maintaining a substantial tolerance (without unstart) to internal and external disturbances. At Mach numbers of 2.47 and 2.76, the inlet tolerance to decreases in diffuser-exit corrected airflow was increased by approximately 10 percent of the operating-point airflow. The stability-bleed system complemented the terminal-shock-control system of the inlet and did not show interaction problems. For disturbances which caused a combined decrease in Mach number and increase in angle of attack, the system with valves operative kept the inlet started 4 to 28 times longer than with the valves inoperative. Hence, the stability system provides additional time for the inlet control system to react and prevent unstart. This was observed for initial Mach numbers of 2.55 and 2.68. For slow increase in angle of attack at Mach 2.47 and 2.76, the system kept the inlet started beyond the steady-state unstart angle. However, the maximum transient angles of attack without unstart could not be determined because wind-tunnel mechanical-stop limits for angle of attack were reached.
Neiner, G. H.↗
Stability theory and the asymptotic behavior of dynamical systems.
Stability and asymptotic behavior of dynamical systems defined by autonomous functional or partial differential equation and conditions for applying Liapunov theorem
STATIC STABILITY↗
The status of stability theory for deterministic systems.
Dynamic system stability, developments, application and literature
SYSTEM STABILITY↗
Drag coefficients for astronomical observatory satellites
The first experimental European communications satellite Symphonie is a geostationary satellite. The satellite is designed and built in a joint project by French and German aerospace firms. A description is given of the basic technical concept of the satellite. The apogee motor is discussed along with the satellite stabilization system. The stabilization system provides a three-axis positional stabilization and an orbital stabilization. Attention is given to the spin stabilization phase, the sensors employed, the approache used for orbital correction maneuvers, and the conduction of simulation tests on the ground.
Williams, R. R.↗