In this work, an on-line dead-time compensation method based on a time delay control for a pulse-modulation (PM) synchronous motor drive is presented. Disturbance voltages caused by the dead time are estimated on-line without any additional circuits nor off-line experimental measurements. The estimated disturbance voltages are fed back to the voltage reference as compensation. The proposed meth...

A method merging the features of variable structure control and neural network design is presented for speed control of a permanent magnet synchronous motor. The proposed control approach is based on a discrete-time variable structure control and a robust digital differentiator for speed estimation. Radial basis function neural networks are used to learn about uncertainties affecting the system...

although, single-sided linear induction motor (slim) utilization has increased in railway applications due to their numerous advantages in comparison to rotational induction motors (rim), there are some sophistication in their mathematical models and electrical drive. this paper focuses on the problems of slim modeling, with assuming end-effect on the basis of field oriented control (foc) as a ...

One way of controlling AC motors for variable speed applications is through the open loop scalar control, which represents the most popular control strategy of squirrel cage AC motors. Nowadays it is used in applications, where information about the angular speed need not be known. It is suitable for a wide range of drives as it ensures robustness at the cost of reduced dynamic performance. Typ...

A miniature linear synchronous motor was designed, fabricated and tested. Actuation was achieved through interaction of traveling magnetic wave, generated by linear array of microcoils on the stator, and permanent magnets on the rotor. Two configurations of the motor were investigated. One with a single hand-assembled permanent magnet on rotor and corresponding array of multiturn microcoils; th...

In a permanent magnet synchronous motor where inductances vary as a function of rotor angle, the 2 phase (d-q) equivalent circuit model is commonly used for simplicity and intuition. In this article, a two phase model for a PM synchronous motor is derived and the properties of the circuits and variables are discussed in relation to the physical 3 phase entities. Moreover, the paper suggests met...

In this study we examined the contractile characteristics of the gastrocnemius muscles of six dogs under the isometric condition by applying stimulating pulses to different two motor branches of the tibial nerve. The synchronous and/or the alternating sequences of stimulation were applied to these two motor branches through two pairs of bipolar stainless wire electrodes. In the alternating sequ...

This article proposes a novel topology optimization method using the Gabor filter, which is widely used in field of image processing. The proposed applied to synchronous reluctance motor; its average torque maximized, and simultaneously, ripple minimized. It shown that results motor with thin layer-shaped flux barriers, achieves better performance comparison conventional model optimized normali...

As position sensorless control technology can avoid many disadvantages caused by mechanical sensors, improve the reliability of motor, reduce costs and other advantages, a large number researchers have conducted research on compound in order to achieve wide speed range. In this article, permanent magnet synchronous motor is reviewed, without sensor elaborated. Finally, existing problems develop...