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A sliding mode variable structure controller for chaotic control in the permanent magnet synchronous motor (PMSM) is presented in this paper. The controller is deduced based on the Lyapunov function theory and the function switch control strategy. The angle speed of the PMSM can be flexibly adjusted according to the engineering requirement by the(More)
When system parameters falling into a certain area, the permanent magnet synchronous motor (PMSM) is experiencing chaotic behavior, which threatens the secure and stable operation of drive system. To control the undesirable chaos in PMSM, a new controller is proposed based on tridiagonal structure matrix stability theory. The proposed controller has some(More)
Abstract. In this paper, the chaotic dynamics of a three-dimensional fractional-order chaotic system is investigated. The lowest order for exhibiting chaos in the fractional-order system is obtained. Adaptive schemes are proposed for control and synchronization of the fractional-order chaotic system based on the stability theory of fractional-order dynamic(More)
The grid-connected inverter is important power electronic implements, used to transfer the power from the DPGS to the public grid, and the quality of its output power has been studied a lot. The repetitive control technique based on the internal model principle, can achieve low steady-state tracking error and total harmonic distortion (THD) in AC systems,(More)
BACKGROUND Protectin D1 (PD1), derived from docosahexaenoic acid, has been shown to control and resolve inflammation in some experimental models of inflammatory disorders. We investigated the protective roles of protectin D1 in pulmonary inflammation and lung injury induced by lipopolysaccharide (LPS). METHODS Mice were randomly assigned to six groups (n(More)
Based on nonlinear characteristics of photovoltaic cells, a PV power generation forecast system is presented in this paper. A control model of grid-connected PV plant based on nonlinear neural network is proposed as well, which can effectively improve the dynamic adjustment ability of photovoltaic power station, realize the function multiplexing, improve(More)
  • Chunlai Li
  • 2011 Second International Conference on Mechanic…
  • 2011
In this paper, the synchronization and parameter identification of hyperchaotic Lorenz systems are investigated. Based on the finite-time stability theory, nonlinear controllers and parameter identifiers are contrived simultaneously to achieve complete synchronization and parameter identification of the hyperchaotic Lorenz systems in the limited time. The(More)
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Based on the Lyapunov stability theory, general nonlinear controllers and parameter identifiers are designed to achieve generalized synchronization and parameter identification of chaotic or hyperchaotic systems. The proposed synchronization scheme is robust to the external disturbances. Numerical simulations results are presented to demonstrate the(More)
The swath-plate engine is an engine with high pressure air as working medium, and it is designed to meet the underwater launch. In order to explore the performance of the engine, the dynamic model is built by using the method of Kane on the basis of the kinematics and dynamic analysis of the main parts of the engine such as the pistons and links, etc. The(More)