Showing papers on "Decoupling (electronics) published in 1973"
TL;DR: The class of systems that can be decoupled is extended, a feedback law in explicit form is given for the pole assignment of the decoupling system and the structure of the compensated form is considered.
Abstract: The paper deals with the decoupling of nonlinear time-variable systems by state feedback. The class of systems that can be decoupled is extended, a feedback law in explicit form is given for the pole assignment of the decoupled system and the structure of the compensated form is considered.
65 citations
TL;DR: In this article, necessary and sufficient conditions for decoupling linear multivariable systems using output feedback are determined, and the class of all feedback matrices which decouple the system is characterized.
Abstract: Necessary and sufficient conditions for decoupling linear multivariable systems using output feedback are determined. For a system which satisfies these conditions, the class of all feedback matrices which decouple the system is characterized. These conditions provide realistic criteria for determining if a compensator or an observer is required for decoupling.
47 citations
25 citations
TL;DR: The sufficient conditions under which a multivariable time varying system with multiple delays in the state and/or the control vector can be decoupled are derived and used to effect the controller design.
Abstract: In this paper the problem of designing a linear feedback controller for decoupling a multivariable time varying system with multiple delays in the state and/or the control vector is considered. The sufficient conditions under which such a system can be decoupled are derived and used to effect the controller design. Two application examples are thoroughly investigated and reported to illustrate the applicability and usefulness of the theory.
14 citations
TL;DR: In this paper, NMR data and relative spectral assignments are reported for several di-phenyl sulphones, together with those of some reference methyl phenyl sulphone, and a concise discussion is reported on the relevant spectral features observed and the conformational properties of the compounds studied.
14 citations
Journal Article•
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TL;DR: The question of "statically decoupling" a linear multivariable system through linear state variable feedback is formally introduced and resolved in this correspondence.
Abstract: The question of "statically decoupling" a linear multivariable system is formally introduced and resolved in this correspondence. Necessary and sufficient conditions for statically decoupling multivariable systems via linear state variable feedback are given and constructively illustrated.
13 citations
8 citations
TL;DR: The results of extensive tests on three types of microwave bimodal X-band spin inductors are reported and discussed in this paper, and the results confirmed that the phenomenology of these inductors is now well understood and that, in agreement with the theory already developed, the square cross-section inductor is in many ways superior to the cylindrical one.
7 citations
TL;DR: An approximate adaptive decoupling controller is synthesized in the present paper which is shown to decouple the system to first (or higher) order in the variations of the system parameters from their known nominal values.
Abstract: The problem of decoupling the inputs and outputs of non-linear control systems is considered for the situation where the system parameters are subject to variations or disturbances. The exact decoupling is obtained by an adaptive state feedback controller which requires full knowledge of the instantaneous values of the system parameters. By utilizing the parameter sensitivity concept an approximate adaptive decoupling controller is synthesized in the present paper which is shown to decouple the system to first (or higher) order in the variations of the system parameters from their known nominal values. The sensitivity equations which generate the state sensitivity function required for the synthesis are derived. The results of the paper actually provide the tools for reducing the system sensitivity to parameter variations when the final goal is the improvement of decoupling.
6 citations
6 citations
26 Apr 1973
TL;DR: For a constant linear dynamic system with unmeasurable disturbances, geometric necessary and sufficient conditions for the existence of a statefeedback controller that localizes the disturbances and simultaneously assigns the closed loop poles or decouples the closed-loop system.
Abstract: For a constant linear dynamic system with unmeasurable disturbances, geometric necessary and sufficient conditions are derived for the existence of a state-feedback controller that localizes the disturbances and simultaneously assigns the closed-loop poles or decouples the closed-loop system. These conditions are simple, intuitively appealing, and closely related to the known necessary and sufficient conditions for the separate problems to be solvable alone. Furthermore, it is shown that for these combined problems no additional flexibility is afforded by using dynamic compensation instead of static compensation except for the combined problem of disturbance localization and decoupling where the additional flexibility is derived from that for the decoupling problem alone. Under a standard rank assumption, it is established that the combined problem of simultaneously localizing the disturbances, assigning the poles and decoupling the system has no solution.
TL;DR: Weak decoupling as discussed by the authors is an alternative to decoupled control laws for terminal value control problems and is particularly suitable for nonlinear, time-variable parameter systems, and it is shown that some of the rather restrictive assumptions needed in the theory of Decoupling are not needed for weak decouplings.
TL;DR: The behavior of p-GaSb has been examined using uniaxial compressional stresses up to 10 10 dyn cm 2 in the temperature range 50 −300°K as mentioned in this paper.
01 Oct 1973
TL;DR: In this paper, the capacitance-voltage characteristics of the three-terminal digital MOS varactor are presented, which does not require external bias decoupling circuitry.
Abstract: The capacitance-voltage characteristics of a new device, the three-terminal digital MOS varactor, are presented. These devices do not require external bias decoupling circuitry thereby resulting in smaller circuits.
TL;DR: In this article, a method of calculating the transport coefficients based on the Kubo formula is presented, where the complex admittance is calculated by setting up and solving the equations for the mass operators.
Abstract: A method of calculating the transport coefficients based on the Kubo formula [1] is presented. The complex admittance is calculated by setting up and solving the equations for the mass operators. A procedure for decoupling the correlation functions is proposed.
Es wird eine Berechnungsmethode fur die Transportkoeffizienten, die auf der Kubo-Formel [1] beruht, mitgeteilt. Die komplexe Admittanz wird durch Aufstellen und Losen der Gleichungen fur die Massenoperatoren berechnet. Es wird eine Methode fur die Entkopplung der Korrelationsfunktionen angegeben.
01 Mar 1973
01 Jan 1973
TL;DR: In this article, the problems involved in the production of complete decoupling between the pump circuit and the output circuit were studied. But it was assumed that this decoupled could not be obtained simply by filtering, and that a differential structure was required.
Abstract: In the theoretical study in Chapter 12 it was assumed that there was complete decoupling between the pump circuit and the output circuit. It was seen that this decoupling could not be obtained simply by filtering, and that a differential structure was required. It is proposed in this chapter to study the problems involved in the production of this decoupling, which will be referred to also as balancing of the bridge or of the input head. In principle only the output circuit having the filter tuned to ω p must be in common to the two branches of the differential structure. The relative position, in every branch and in the combination of the branches of the varactor, of the pump circuit and of the input filter (which can also be tuned to ω p ) determine ten principal variants to the base circuit of Fig. 12.3, every one having its dual.
01 Dec 1973
TL;DR: For a constant linear dynamic system with unmeasurable disturbances, geometric necessary and sufficient conditions are derived for the existence of a statefeedback controller that localizes the disturbances and simultaneously assigns the closed loop poles or decouples the closed-loop system as mentioned in this paper.
Abstract: : For a constant linear dynamic system with unmeasurable disturbances, geometric necessary and sufficient conditions are derived for the existence of a state-feedback controller that localizes the disturbances and simultaneously assigns the closed-loop poles or decouples the closed-loop system. These conditions are simple, intuitively appealing, and closely related to the known necessary and sufficient conditions for the separate problems to be solvable alone. Furthermore, it is shown that for these combined problems no additional flexibility is afforded by using dynamic compensation instead of static compensation except for the combined problem of disturbance localization and decoupling where the additional flexibility is derived from that for the decoupling problem alone. Under a standard rank assumption, it is established that the combined problem of simultaneously localizing the disturbances, assigning the poles and decoupling the system has no solution. (Author)