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According to the multivariable and strong coupling characteristics of back-to-back converters and induction motors, In this paper, the four quadrant operation and bidirectional energy flow of induction motor are studied by combining sliding mode control and port controlled Hamilton (PCH) system theory. First of all, the external loop controller of voltage, speed and flux is established by sliding...
A novel method of energy-shaping and integral control is proposed for the three-tank liquid level system. The mathematical model of the three-tank liquid level system is established based on port-controlled Hamiltonian (PCH) systems and mass balance principle. The three-tank liquid level system PCH controller is designed by means of interconnection assignment and damping injection and energy-shaping...
The crystallization kinetics of poly(p-benzamide) (PBA)/H 2 SO 4 and PBA/Nylon 6/H 2 SO 4 from both the liquid crystalline state and isotropic state was investigated by the depolarized light intensity (DLI) technique and polarized light microscope (PLM). The isothermal process of the transitions in the anisotropic phase can be described by the Avrami equation. The values...
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