Showing papers on "Decoupling (electronics) published in 1969"
TL;DR: In this article, a comprehensive theory for the decoupling of multivariable systems by state feedback is developed, and a preliminary formulation of decoupled problem is discussed. But this paper is not a comprehensive analysis.
Abstract: 1. Introduction. The objective of this paper is to develop a comprehensive theory for the decoupling of multivariable systems by state feedback. We begin by giving a preliminary formulation of the decoupling problem, discussing certain aspects of its solution, reviewing previous research, and indicating the contributions of this paper.
378 citations
99 citations
Patent•
10 Oct 1969
TL;DR: An ultrasonic drive assembly comprises a shaft which while rotating is caused to be resonant along its axis at a sonic or ultrasonic frequency by piezoelectric means, and a set of antifriction bearings is mounted on the shaft at nodal regions using liners for providing acoustic decoupling as discussed by the authors.
Abstract: An ultrasonic drive assembly comprises a shaft which while rotating is caused to be resonant along its axis at a sonic or ultrasonic frequency by piezoelectric means. A set of antifriction bearings is mounted on the shaft at nodal regions using liners for providing acoustic decoupling. The liners are made of compliant nonresilient material to minimize tool runout.
29 citations
TL;DR: In this article, the potential representation of vector fields is employed to effect the decoupling of the vector wave equation of elasticity for radially heterogeneous isotropic media, which is useful in the ray-theory treatment.
Abstract: The potential representation of the vector fields is employed to effect the decoupling of the vector wave equation of elasticity for radially heterogeneous isotropic media. Two types of decoupling are considered: decoupling for all values of the frequency and decoupling for high frequencies, which is useful in the ray‐theory treatment. In the case of decoupling for all frequencies, the three constitutive parameters of the medium should satisfy a pair of nonlinear differential equations. For high‐frequency decoupling, one of these equations becomes unnecessary. A few useful examples of the media that satisfy the conditions of decoupling are given.
19 citations
TL;DR: Using this definition, the necessary and sufficient conditions for decoupling obtained in [1] are rederived and the class of decoupled feedback matrices is brought into the open.
Abstract: A definition of decoupling is presented which is simple, intuitive, and which brings into the open the class of decoupling feedback matrices. Using this definition, the necessary and sufficient conditions for decoupling obtained in [1] are rederived.
13 citations
TL;DR: In this article, the dibromo-dideoxyinositols with the aid of spin decoupling technique established their configurations to be DL-2,4-dibromofideoxy-chiro-inositol.
Abstract: Bromination of DL-epi-inositol yielded two hitherto unknown dibromo-dideoxyinositols, along with two known bromo-deoxyinositols (DL-5-bromo-5-deoxy-allo-inositol and DL-1-bromo-l-deoxy-neo-inositol). The proton magnetic resonance spectroscopic studies of the dibromo-dideoxyinositols with the aid of spin decoupling technique established their configurations to be DL-2,4-dibromo-2,4-didoxy-chiro-inositol and DL-1,4-dibromo-1,4-dideoxy-chiro-inositol.
4 citations
TL;DR: In this article, an example of decoupling in linear distributive systems is presented, where attention is focused on the interaction of feedback and input-output coupling, and several avenues for further research are suggested by the example.
Abstract: An example of decoupling in linear distributive systems is presented. Attention is focused on the interaction of feedback and input-output coupling. Avenues for further research are suggested by the example.
4 citations
Patent•
21 Mar 1969TL;DR: In this article, a noise generator circuit is described, having a transistor amplifier operated by a noise diode connected to its base electrode, which is operated in response to a selected one of a plurality of decoupling diodes arranged in a network with respect to the plurality of voicing oscillators.
Abstract: A noise generator circuit is disclosed herein having a transistor amplifier operated by a noise diode connected to its base electrode. The noise diode is operated in response to a selected one of a plurality of decoupling diodes arranged in a network with respect to a plurality of voicing oscillators. A collector resistor couples the decoupling diode network to respective ones of the voicing oscillators. The oscillators may be of the phase shift or the multivibrator type.
2 citations
TL;DR: In this article, the hydrodynamic equations for first and second sound derived by diagrammatic techniques are compared with those obtained by decoupling procedures, and a simple diagrammtic description of the sum-rules is obtained.
1 citations
Patent•
02 Jul 1969
TL;DR: An aperiodic coupler having any number of inputs and comprising the same number of two-wire lines, each associated with a high permeability magnetic core, has been proposed in this article.
Abstract: An aperiodic coupler having any number of inputs and comprising the same number of two-wire lines, each associated with a high permeability magnetic core. Its insertion loss is negligible and it has substantial decoupling between any two inputs.
1 citations
TL;DR: In this article, a noninteracting controller for linear multivariable sampled data systems is proposed based on transform analysis of the data system, where the feedback signal is sampled, but continuous controllers are used.
Abstract: Methods are presented for designing noninteracting controllers for linear multivariable sampled data systems. The two particular cases considered are as follows: (1) The feedback signal is sampled, but continuous controllers are used. (2) Digital controllers are utilized. The methods are based upon transform analysis of sampled data systems. The design procedures facilitate the selection of physically realizable controllers and allow suitable overall system response. For the first case, dy- namic decoupling is assured not only at the sampling instants but at all times. For the second case, dynamic decoupling is assured only at the sampling instants. It is shown, however, that this is a general result when using digital decouplers and is not particular to the proposed method.
TL;DR: In this paper, general conditions are formulated when a time-varying multivariable system can be decoupled, and the matrices for the decoupling are given for the inverse of a linear time varying multiivariable systems.
Abstract: Decoupling by state-variable feedback and forming of the inverse has been done for multivariable systems with constant coefficients. In this letter, the theory is extended to linear time-varying systems. For this, general conditions are formulated when a time-varying multivariable systems can be decoupled. Further, the matrices are given for the decoupling. The inverse of a linear time-varying multivariable systems is also determined.
TL;DR: In this article, the translationally uniform magnetic solutions of a strongly correlated, narrow s-band, improved random phase approximation and moment-conserving decoupling approximations were developed.
Abstract: To study the translationally uniform magnetic solutions of a strongly correlated, narrow s‐band, improved random‐phase approximations and moment‐conserving decoupling approximations are developed
Patent•
[...]
03 Jan 1969
TL;DR: In this paper, a monostable multivibrator having a source ofositive voltage connected through a network of inductive, resistive and capacitive elements is connected to the network.
Abstract: An output one-shot including a monostable multivibrator having a source ofositive voltage connected through a network of inductive, resistive and capacitive elements. A transistor receiving a power source through a decoupling network is connected to the network and the monostable multivibrator for providing increased stability to the system.