The novel two amplitude series actively clamped resonant DC link inverter keeps the traditional advantages,such as simplicity,soft switching condition and high frequency,meanwhile the control technique greatly reduces the resonant power loss so that the overall system performance is improved.

Two amplitude modulation microwave reflectometry systems based on time-delay method with scanning microwave source are designed for plasma density profile measurement on HL-2A tokamak.

After the coarse registration by using Conventional techniques of cross correlation, interpolates one of the two amplitude images according to the offset of the matching position between two images and then resamples the image to accomplish the subtle registration.

Polarized measurement using Stockes parameters makes measurement much more simpler and easier in technological implementation, for it transforms original measurement method, which needs measure two amplitude parameters and a phase difference parameter to a method, to measure three parameters with intensity physical unit.

A new resonant sensor consisting of two resonators of uniform structure and size is presented. The closed loop control system is composed of two amplitude controllers and an inverter.

Twenty-two amplitude distributions with approximately regular, visually distinguishable peaks were analyzed.

Two amplitude detector circuits-a precision rectifier and an averaging rectifier-were used to test the tuning scheme.

Each NNM involves two amplitude parameters.The structure of the NNMs is shown to depart from the generic formin the neighborhood of a 1:1 internal resonance.

For p-p scattering the calculation in a three amplitude rescattering eikonal model predicts the survival probability to be an order of magnitude smaller than for the two amplitude case.

The phase of the isospin-two amplitude may be modified by .

The phase method for determining the coupled vibration parameters Kx, Kφ, Cx and Cφ of foundations is described in this paper. The mode superposition method was used in general for determining these parameters under certain satisfied conditions, otherwise the two equations of coupled motion cannot be separated into two independent normal mode equations. In the recommended phase method, the four parameters can be determined as long as two phase angles and two amplitudes are measured, and...

The phase method for determining the coupled vibration parameters Kx, Kφ, Cx and Cφ of foundations is described in this paper. The mode superposition method was used in general for determining these parameters under certain satisfied conditions, otherwise the two equations of coupled motion cannot be separated into two independent normal mode equations. In the recommended phase method, the four parameters can be determined as long as two phase angles and two amplitudes are measured, and it would be generally valid, even if the above mentioned conditions are not fulfilled. In this paper, the general formulae are presented. The correctness of which being verified by the fact that the deduced special case agrees well with the usual approximate formulae.

In designing a foundation subjected to coupled sliding and rocking vibration, four parameters Kx, K , Cx and C are indispensable. For a long time, designers have often used either the formulae from the half-space theory or other procedures such as the superposition method or approximate one to obtain these parameters. In this paper, the method, called "Phase Method", is presented. According to this new method, the requisite parameters can readily be determined from a small-scale test foundation excited with...

In designing a foundation subjected to coupled sliding and rocking vibration, four parameters Kx, K , Cx and C are indispensable. For a long time, designers have often used either the formulae from the half-space theory or other procedures such as the superposition method or approximate one to obtain these parameters. In this paper, the method, called "Phase Method", is presented. According to this new method, the requisite parameters can readily be determined from a small-scale test foundation excited with a mechanical vibrator provided that two phase angles and two amplitudes are measured. General and simplified formulae are shown. A case history is also described.

The behaviour of electrons in a crystal can be described by Sohrodinger's equation for a periodic potential. Up to now, the transfer matrix technique remains one of the best available to solve problems in one dimension. In this paper, a new matrix method called "the characteristic matrix of periodic potential" is introduced. The traditional transfer matrix connects two amplitudes of plane waves or Bloch waves. Instead, the characteristic matrix simply connecting wave functions and their derivates, makes...

The behaviour of electrons in a crystal can be described by Sohrodinger's equation for a periodic potential. Up to now, the transfer matrix technique remains one of the best available to solve problems in one dimension. In this paper, a new matrix method called "the characteristic matrix of periodic potential" is introduced. The traditional transfer matrix connects two amplitudes of plane waves or Bloch waves. Instead, the characteristic matrix simply connecting wave functions and their derivates, makes the evaluation of the elements of characteristic matrix simpler than that of transfer matrix, and makes it more suitable for solving the energy values for complicated potentials in one dimension, especially the periodic potentials.The general properties of the characteristic matrix are discussed in detail. Its determinant is always unity. When the values of electron energy lie inside on the allowed energy bands, both the eigenvalues of the matrix are complex and both their moduli are unity. When the value of energy lies inside one of the forbidden gaps, both the eigenvalues are real, but one of the moduli is greater than unity with the other less than unity. So when the periodic potential is interrupted or partly destroyed, only the eigenvector belonging to eigenvalue of tho lessor modulus can form a finite wave function with a discrete energy level in the forbidden energy gap.Following a unified presentation with emphasis on the eigenvalues and the eigenvectors of the characteristic matrix, we have derived some formulae. They are the general electron-energy expressions for bulk states of infinite and finite crystals, for surface states of semi-infinite and finite crystals, and for impurity and impurity-island states of infinite and finite crystals. The existence conditions and main properties of these states are also discussed in detail. With, these formulae, the problems of finding the energy expressions for all these states are now reduced to the one of finding the elements of the characteristic matrices. The methods to evaluate these elements, including some approximate methods for numerical calculations, have also been introduced.Some applications of these formulae are also presented. For a variety of Kronig-Penney models, we have obtained from these general formulae the same energy expressions as obtained by other authors.