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This paper proposes a phase correction strategy for the zero sequence back EMF based sensorless drive under current regulation control (viz., I/f control). The straightforward phase correction process based on the nearest principle might lead to false correction under different load conditions. The proposed strategy can achieve robust phase correction by injecting transitory high frequency (HF) signal...
The performance evaluation of an adjustable space-vector (SV) PWM (SVPWM) strategy for open-winding (OW) permanent magnet synchronous machine (PMSM) (OW-PMSM) drives with common DC bus is presented. Different from modifying the conventional SVPWM algorithm, the proposed method is realized by reconstructing the voltage references for individual SVPWM module. No need of modification on a conventional...
This paper proposes an application-aware multipath flow routing framework that integrates Machine Learning Techniques (MLT) in Software Defined Networks (SDN). Applications generated by the devices are diverse in nature, for each application bandwidth and delay requirements vary. The flows in the network compete for a constrained resource such as bandwidth or low latency path, an intelligent flow...
This paper presents speed control of Permanent Magnet Brushless DC (PMBLDC) motor using TMS320F2812 DSP controller. The DSP controller used here has the specific peripherals dedicated for digital motor control applications. Control algorithms used for the speed control has been implemented through assembly language programming in DSP controller. According to the input command, feedback and the control...
This paper analyzes the effectiveness of the reaching law approach for sliding mode control of discrete time systems. The method is extended for sliding mode control for multi-input multi-output (MIMO) systems. Modified reaching law for reducing the chattering is proposed. The performance of the proposed controller is analyzed by carrying out simulation studies on MIMO systems. The performance of...
This investigation is to design an optimal pulse width modulation form of sliding mode controller for buck converter. In this controller design, the converter parameters and the initial conditions of the state variables are made use of. The Proportional Integral Derivative type of switching surface is chosen and continuous current conduction mode of operation is assumed. The design method is illustrated...
Currently, induction motor drives and other symmetrical, three-phase inductive loads are the main applications of matrix converters. If only two loads are connected to matrix converters, the conventional control algorithms cannot be applied as usual due to the unsymmetrical load. To extend the application of matrix converters to unbalanced loads this paper derives a novel angle-modulation strategy...
We consider an F-16 fighter aircraft subject to asymmetric actuator failures. To address non-symmetric faults, it is not possible to decouple the longitudinal and lateral dynamics. It is necessary to deal with a full six degree of freedom airframe. Firstly, we outline an automated procedure to assemble the symbolic and simulation models of complex aircraft. The symbolic model can be manipulated in...
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