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A novel feedback control scheme for speed regulation of permanent magnet synchronous motor (PMSM) is presented based on energy-shaping and port-controlled Hamiltonian (PCH) systems theory. The desired state error port-controlled Hamiltonian structure is assigned to the closed-loop PMSM system by feedback control. Using interconnection and damping assignment passivity-based control (IDA-PBC) methodology,...
In order to overcome the parameter uncertainties, enhance the fast tracking performance of PMSM servo system, a self-tuning fuzzy PI+PD controller is proposed first in this paper. The self-tuning fuzzy PI+PD controller is fast; computing on-line easily and can reduce stability error, especially fitting for application in the speed control of the PMSM servo system. Then an observer is adopted to observe...
Because hydroelectric generating unit system is a non-linear, varying with time and high steps system, conventional PID controller cannot get better controlling performance in the control of hydroelectric generating unit system. In order to overcome the shortcoming of conventional controller, neural network is used to optimize PID control parameters and identify the character of hydroelectric generating...
Direct torque control based on space vector modulation (SVM-DTC) preserve DTC transient merits, furthermore, produce better quality steady-state performance in a wide speed range. The SVM-DTC system based on input-output linearization technique for induction machine drives is developed in this paper. A sliding-mode observer for estimating flux is introduced. The observer is inherently sensorless because...
Wavelet analysis is used in direct thrust control system of linear motor drive in this paper. The change of the primary resistance of linear motor will greatly affect the performances of direct thrust control system at low speeds. The observation of flux linkage is improved by accurate identification of primary resistance, and the direct thrust control performance of linear motor is further improved...
The paper offers a wind turbine training system, which has supervisory layer and control layer. The supervisory layer is based on American NI Company's graphical software-LabVIEW to set up the monitoring interface. The control layer is based on Matlab/Simulink software to simulate the wind power generation system model. With researching the mathematic model of wind turbine and analyzing control strategy...
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