Showing papers on "Decoupling (electronics) published in 1976"

Decoupling and descattering networks for antennas

Abstract: The possibilities of connecting a lossless network between input ports and antenna ports such that there is no coupling and scattering between the antennas are discussed. A necessary condition for complete decoupling and descattering is power orthogonality between the patterns of the individual antennas. Numerical and experimental results are presented for monopole antennas.

Decoupling by restricted state feedback

Abstract: A necessary and sufficient condition for integrator decoupling of p -input m -output multivariable control systems by the restricted state feedback control law, u = GFx + G\upsilon , is established.

Electrical machine operating as a generator or as an amplifier

Abstract: The invention relates to an electrical machine. The stator 1 is a delay line, in the form of a low-pass filter in the example, formed by inductance 11 and capacitors 12 connected between these inductances and the common conductor 13. The rotor 2 comprises dissipating elements 22 incorporated in circuits 26, separate in the example, and having a common point 25. It is put in movement by a motor. The machine operates as a high-gain amplifier having a wide band of high-frequency signals applied to the input 14 of the stator, separated from the output 15 by the decoupling zone 30. High powers are obtainable. Application to installations for testing vibration of industrial equipment and to high-power longwave radio transmission.

Dynamic compensation for state feedback decoupling of multivariable systems

Abstract: A method of decoupling linear time-invariant multivariable systems, which cannot be decoupled by proportional state feedback, but are invertible, is presented in this paper. A design procedure is developed for pre-compensating such a system, so that the augmented system satisfies the condition of state feedback decoupling. An expression for evaluating the order of the compensator is derived, and an algorithm described to compute the parameters of the compensator by solving a set of simultaneous linear equations. The flexibility in the choice of compensator dynamics is illustrated.

Confocal LDV utilizing a decoupling beam splitter combiner.

Abstract: An improved laser Doppler velocimeter (LDV) is described for applications where confocal backscatter geometry is required. The optical geometry of the new technique is virtually the same as had been successfully employed by other investigators, with the important difference that a Glan prism is substituted for the 50-50 reflective beam splitter normally used in this geometry. The result is the elimination of major optical losses due to the beam splitter yielding more than a threefold increase in the signal level and a concurrent improvement in the SNR. The new LDV geometry is depicted schematically in Fig. 1 (not to scale). The critical elements of the system are the Glan prism, which separates the laser beam into two normally polarized components, and a quarter-wave phase retardation plate, which functions as a polarization rotator. In the geometry shown in the figure, a polarized laser is employed; and the Glan prism is aligned with its transmission axis normal to the primary polarity of the beam. The result is a strong illuminating beam that is deflected upward and a weak reference beam, which is transmitted by the prism to the right in the figure. Normally, a polarized laser will have a few tenths of 1% of its rated output power in the cross polarized component, which is more than sufficient to serve as a reference beam. If an unpolarized laser were used, essentially half the available power would be wasted because the reference beam must be attenuated to approximately the same power level as the scattered beam. On leaving the Glan prism, the illuminating beam is circularly polarized by the wave plate. The telescope expands and refocuses the beam at a remote point where scattering occurs due to particles passing through the focal volume. Light that is backscattered into the collection cone of the telescope is collimated and transmitted back through the wave plate, emerging linearly polarized parallel to the transmission axis of the Glan prism (neglecting depolarization due to scattering). The scattered light is

Faucet coupler assembly

Abstract: A coupler assembly for a portable washing machine which includes a mechanism associated with an operating lever and a pressure relief means to provide automatic sequential depressurization and then decoupling of the assembly from the faucet when the operating lever is moved in an axial direction.

A new approach for the design of non-interactive systems

Abstract: A systematic method of designing stable decoupled systems using output feedback and a non-singular transformation on the output is outlined. These results are easily obtained by dualizing those on state variable feedback decoupling.

Modal decoupling and dyadic transfer function matrices

Abstract: Previous results on the feedback control analysis of dyadic transfer-function matrices are related to the general concept of modal decoupling and the techniques extended to cope with the case of unbounded or singular dc matrices

Electric timer for storage battery charger - has preset time controlled by knob, and charging time triggered by push-button

Abstract: The preset time is triggered with a variable delay, and the charging time includes the preset time. A time switch (2, 3) is allowed to the preset time and to the charging time respectively. Each switch has a switching disk (17, 29) driven by a spring (21) against a stop (23), and rewound by an electric motor (26, 31). Each switching disk (17, 29) has an operating shaft (7, 8), axially movable for the motor decoupling against a spring (15, 28) pressure. The shaft (8) of one time switch (3) is driven by the shaft (7) of the other one (2), when it is moved against the spring (15, 28) pressure. The charging time triggering push-button is preferably mounted on the shaft (7) of the preset time switch (2).

The decoupling of multivariable systems using matrix polynomial equations

Abstract: A matrix polynomial equation is derived which governs the behaviour of time-invariant multivariable systems under linear state variable feedback. This is used to derive the f-invariants of the system. The problem of decoupling is considered using this matrix polynomial equation and conditions for decoupling are easily derived from it. An algorithm for decoupling is then presented. Examples are given to illustrate the procedure.

A general theory of decoupling a system of lossless coupled lines using linear transformations

Abstract: This paper presents a general theory of decoupling a system of nonuniform lossless coupled lines with the aid of linear transformations. The lines have a common return and support only TEM waves. It is shown that the solution of the decoupling problem is equivalent to that of the simultaneous diagonalization of a set of real constant matrices through specially related pairs of congruent and similarity transformations. The solution of the equivalent problem yields the necessary and sufficient conditions for decoupling the system of coupled lines. A systematic procedure for decoupling is then presented. A special case is studied for which the decoupling problem becomes simpler. Finally, we have derived a set of equivalent but considerably simpler necessary and sufficient conditions for decoupling the frequently used system of a pair of lossless coupled lines.

Automatic Depth and Pitch Control for Submarines.

Abstract: : Steady-state and total decoupling schemes for multivariable systems are used to develop two automatic control systems for the vertical motion of a fictitious submarine A linearized mathematical model is derived from a non-linear model in six degrees of freedom Both designs are simulated and evaluated with respect to performance, simplicity of design procedure, and grade of complexity The controller, designed via the steady-state decoupling method, is implemented in the non-linear model and tested under various operating conditions (Author)

Kinetische Herleitung verallgemeinerter Nernst‐Planck‐Gleichungen. IV.) Korrelationen im quasihomogenen System

Abstract: Es wird gezeigt, das die Korrelationsgleichungen fur Ionen in einer Elektrolytlosung von den Einteilchengleichungen (verallg. Nernst-Planck-Gleichungen) soweit entkoppelt werden konnen, das die Korrelationsgleichungen unabhangig von den Einteilchengleichungen gelost werden konnen: man erhalt die Korrelationsfunktionen als Funktionale der Einteilchenfunktionen. Kinetic Derivation of Generalized Nernst-Planck-Equations. IV. Correlations in a Quasi-Homogeneous System This paper shows the decoupling for the pair-correlation-equations for ions in an electrolyte solution from the one-particle-equations (generalized Nernst-Planck-equations). The consequence of the decoupling is the fact, that one can solve the pair-correlation-equations independent of the one-particle-equations: their solutions, the pair-correlation-functions, are functionals of the one-particle-functions.