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In this paper, the electrical equivalent circuits of the piezoelectric transformer (PT) with heat transfer system (HTS) had been studied. A heat transfer model of the longitudinal vibration PT had been built and an experiment study on the equivalent circuit model of the PT with HTS was proposed. this work provides a useful information for the application of piezoelectric transformer in high-power...
In order to solve the problem the homogeneous coefficient of the classic active demons algorithm can not take into account large deformation and small deformation at the same time, this paper presents a non-rigid registration algorithm based on active demons algorithm. The proposed algorithm introduces a new parameter called balance coefficient to the active demons algorithm, which will adjust the...
In this paper, the small-signal model of a boundary conduction mode (BCM) boost power factor correction (PFC) converter controlled by a peak control current control IC L6561 is derived. Based on the derived mathematical model, a Type II compensator is thus well designed to make the boost converter exhibits the performances of high power factor and output voltage regulation. Finally, a 300 W prototype...
A field programmable gate array (FPGA) based digital control for boost power-factor-correction (PFC) converters with average current-mode control (ACC) is implemented in the paper. It is designed to fulfill the international current standards on power factor and input current harmonic distortion of power supplies. The digital control design of the boost PFC converter with ACC is implemented by the...
It is shown in this paper that the successive approximation procedure simplifies computations of the optimal solution of a bilinear-quadratic optimal control problem. For a given bilinear system affected by external periodic disturbances, a sequence of linear problems is constructed, and their solutions are shown to converge to the desired solution. By solving iterative the sequences, the optimal...
Configuration of a magnetorheological (MR) damper is similar to a traditional fluid damper. The difference is that a magnetorheological damper uses MR fluid to replace traditional hydraulic oil. MR fluid is composed of many tiny magnetic particles suspended in silicon oil. Without a magnetic field, the fluid acts like traditional hydraulic oil. With a magnetic field, the magnetic particles chain together,...
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