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Stabilized Feedback Amplifiers
2009This paper describes and explains the theory of the feedback principle and then demonstrates how stability of amplification and reduction of modulation products, as well as certain other advantages, follow when stabilized feedback is applied to an amplifier. The underlying principle of design by means of which singing ia avoided is next set forth.
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Stabilized Feedback Oscillators
Bell System Technical Journal, 1938The author presents a mathematical consideration of the conditions which insure constant frequency of the vacuum tube oscillator under changes of electrode potentials or of the cathode temperature. It has already been shown that the grid and plate resistances may enter into the determination of the frequency.
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1990
The introductory Sections 1.2 to 1.5, which the reader is advised to review at this point, motivated the search for feedback laws to control systems. One is led then to the general study of the effect of feedback and more generally to questions of stability for linear and nonlinear systems.
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The introductory Sections 1.2 to 1.5, which the reader is advised to review at this point, motivated the search for feedback laws to control systems. One is led then to the general study of the effect of feedback and more generally to questions of stability for linear and nonlinear systems.
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Homogeneous Feedback Stabilization
1991We address a special case of the general problem of finding continuous feedback laws (that lead to unique solutions) and asymptotically stabilize the origin of (in general) nonlinear smooth systems of the form $$\dot x = f(x) + ug(x)with x \in {R^n},u \in R$$ (1) The purpose of this note is to further popularize the use of feedback laws that ...
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3.7 Passive Feedback Stabilization
AIP Conference Proceedings, 1970A single‐ended Q‐machine has been modified to provide for the study of generalized boundary conditions. The sections of the segmented boundary can be interconnected through passive components to provide passive feedback. The ion density fluctuation amplitude of the Kelvin‐Helmholtz instability, for densities of ∼108 – 109 cm−3 and magnetic fields of ∼1–
David C. Carlyle +3 more
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Feedback stabilization, stability and chaotic dynamics
1985 24th IEEE Conference on Decision and Control, 1985We examine the control of a (prototype) nonlinear pendulum under uncertainty in modelling. The uncertainty is sufficiently small and is a function of both state and time. We apply Liapunov direct method to prove the stability of an equilibrium point.
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Stability of Feedback Systems and Stabilization
2014By way of motivation, consider the linear one-dimensional controlled system $$ \dot{x} = ax + u,\quad x\left( 0 \right) = \xi \in {\mathbb{R}}, $$ (6.1) with real parameter a > 0.
Hartmut Logemann, Eugene P. Ryan
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Observer-Based Feedback Stabilization
2014Because of technical or economical limitation, it is not easy to obtain all system state variables of practical systems. In this case, it is preferable to design a controller without using all of the state variables. In this chapter, the observer-based stabilization problem of SMJSs is considered, where either the controller or the observer is mode ...
Wang, Guoliang +2 more
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Stability of Feedback Circuits
1995Feeding back the output signal to the input does not in all cases establish the equilibrium state expressed by the basic input-output relation $$ G = \frac{A}{{1 + A\beta }} $$ (3–1) We can understand this from considering the consequence of reversing the sign of the forward path.
Rudy G. H. Eschauzier, Johan H. Huijsing
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Feedback stabilization in Plasmas
Nuclear Fusion, 1971By using feedback control techniques a variety of plasma instabilities have been suppressed. In all cases these instabilities have long wavelengths, low azimuthal wave numbers, and simple radial dependence. This minimizes control problems associated with the spatial variation of the mode.
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