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This study aims to design an adaptive output recurrent cerebellar model articulation controller (AORCMAC), which is embedded into the direct torque control (DTC) system of an induction motor as the speed controller. Similar to the conventional cerebellar model articulation controller (CMAC), the designed AORCMAC also has the advantages of rapid learning, simple architecture, online training, and nonlinear...
This study purposed a sliding-mode controller (SMC) with a variable sliding surface (slide plane). This SMC was then applied to a direct field-oriented control (FOC) system without speed sensors developed for an induction motor. To improve the performance and robustness of the drive, fuzzy theory was integrated with sliding-mode control. For this integration, fuzzy sliding surfaces were used as a...
Based on the Takagi-Sugeno-Kang (TSK) fuzzy controller and adaptive control theory, this study presents the design of an adaptive TSK fuzzy controller (ATSKFC). With an online learning function, this controller is an improvement on the traditional PI controller, whose parameters are fixed. An improved model for a compensating controller is also proposed to address the problems caused by the fixed...
This work presents a twin sliding mode controller (TSMC) and neural network-based estimators for vector controlled induction motor (IM) drives. The proposed TSMC is used as a speed controller. In contrast with conventional sliding mode control (SMC), the TSMC can more significantly improve the dynamic response and eliminate the chattering effect. Additionally, estimators are implemented respectively...
The design and implementation of an adaptive neural network based proportional-integral controller (NNPIC) were carried out on the direct torque control (DTC) system. The proposed controller consists of neural network and projection algorithm, in order to tune its parameters adaptively online under environmental variations. The experimental results proved that the performance of the proposed controller...
This paper presents a new speed-sensorless vector control drive system for induction motor. In order to produce low harmonics in output voltage and current, reduce the torque fluctuation, and avoid the high voltage jump in switching time, the system utilizes three-level inverter to supply power for the induction motor and a SVPWM scheme with neutral point voltage balance strategy is applied for the...
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