This paper presents an adaptive nonlinear position controller with velocity constraint, capable of combining the input-output linearization technique and Lyapunov stability theory. Based on the Lyapunov stability theory, the adaptation law of the proposed controller is derived along with the verification of the overall system’s stability. Computer simulation results demonstrate that the propose...

This study presents the design of a magnetically levitated (maglev) axial magnetic flux brushless direct current motor (AF-BLDC) for an axial blood flow ventricular assist device (VAD). It has three phases, twelve salient stator poles, and eight rotor magnet poles. It is designed in miniature size. Twin AF-BLDC motors are placed in the VAD symmetrically and rotors are coupled to the pump from t...

The position-sensor less direct torque and indirect flux control of brushless dc (BLDC) motor with non sinusoidal back electromotive force (EMF) has been extensively investigated. In this study, a novel and simple approach to achieve a low-frequency torque ripple-free direct torque control (DTC) with maximum efficiency based on dq reference frame is presented. The proposed sensor less method cl...

The Brushless DC (BLDC) motor is a simple robust machine which has found application over a wide power and speed of ranges in different shapes and geometry. This paper briefly reviews the fundamentals behind the motor and also the different types of BLDC motors with different geometries and then presents a new configuration for BLDC motor/generator, which does not use a permanent magnet in the ...

In this paper, an adaptive current controller is proposed for variable speed brushless direct (BLDC) motor drives to minimize the output torque ripples caused by parametric and periodically varying uncertainties. Phase-to-phase non-ideal back-electromotive force (back-EMF) in BLDC changes with respect shaft angle, hence period of these signals alters depending on rotor frequency. To address pro...

Abstract Single-phase brushless DC (BLDC) drives are a cost-effective alternative for three-phase sub-fractional horsepower in automotive auxiliary applications. Inherent features of single-phase permanent magnet machines, such as high cogging torque and ripple, can, however, make them more audible than their counterparts. As some these close to the passengers, where even small amount noise can...

A prominent and realistic problem in magnetics is the optimal design of a brushless direct current (BLDC) motor. key challenge designing BLDC motor to function efficiently with minimum cost materials achieve maximum efficiency. Recently, new metaheuristic optimization algorithm called Coronavirus Herd Immunity Optimizer (CHIO) reported for solving global problems. The inspiration this technique...

Brushless DC motors (BLDC) are one of the most widely used types motors, both in industrial and automotive fields. BLDC motor was chosen because it has many advantages over other electric motors. However, its application market, control systems still use conventional controls. This method is easy simple to apply but weaknesses, example that if system state changes, then parameters PID must also...

A rapid control prototyping toolbox for the Renesas M32C87 microcontroller is described and a practical application for the control of brushless direct current (BLDC) motor using the implemented toolbox is presented. A closed loop control application using a PID controller is implemented. For controller tuning two experimental methods are used namely the relay feedback method and tuning with sp...