<abstract xmlns="http://www.w3.org/1999/xhtml">

<p>This paper introduces a new approach in instantaneous angular speed monitoring using a two-phase <italic>n</italic> poles AC generator as sensor. A two-phase <italic>n</italic> poles (<italic>n=50</italic>) stepper motor plays the role of sensor. Its rotor is firmly connected to the rotary part whose instantaneous angular speed should be measured. The sensor produces two identical sinusoidal EMF (electromotive force) signals (theoretically shifted with <italic>π/2</italic> radians) with the same periods <italic>T</italic>. This paper proposes to use the mathematical product of the numerical descriptions of these EMF signals in order to define a new EMF signal with a period <italic>T/2</italic> whose analysis allows the determination <italic>of 4·n=200</italic> samples of instantaneous angular velocity on each full rotation. Each period of this new EMF signal (with an overlap of a semi period) is involved in the description of the instantaneous angular speed. In this way, the sensor is virtually converted in a single-phase <italic>2·n</italic> poles (2·<italic>n=100</italic>) AC generator. The experimental results confirm the validity of this approach.</p>
</abstract>

This paper introduces a new approach in instantaneous angular speed monitoring using a two-phase n poles AC generator as sensor. A two-phase n poles (n=50) stepper motor plays the role of sensor. Its rotor is firmly connected to the rotary part whose instantaneous angular speed should be measured. The sensor produces two identical sinusoidal EMF (electromotive force) signals (theoretically shifted with π/2 radians) with the same periods T. This paper proposes to use the mathematical product of the numerical descriptions of these EMF signals in order to define a new EMF signal with a period T/2 whose analysis allows the determination of 4·n=200 samples of instantaneous angular velocity on each full rotation. Each period of this new EMF signal (with an overlap of a semi period) is involved in the description of the instantaneous angular speed. In this way, the sensor is virtually converted in a single-phase 2·n poles (2·n=100) AC generator. The experimental results confirm the validity of this approach.

Improving Instantaneous Angular Speed Monitoring by Means of Sinusoidal EMF Signals Delivered by a Two-Phase <italic>n</italic> Poles AC Generator Used as a Sensor

“Gheorghe Asachi” Technical University of Iaşi

Faculty of Machine Manufacturing and Industrial Management, Digital Manufacturing Systems Department

Bulletin of the Polytechnic Institute of Iași. Machine constructions Section

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Improving Instantaneous Angular Speed Monitoring by Means of Sinusoidal EMF Signals Delivered by a Two-Phase  Poles AC Generator Used as a Sensor

This paper introduces a new approach in instantaneous angular speed monitoring using a two-phase n poles AC generator as sensor. A two-phase n poles (n=50)...

Improving Instantaneous Angular Speed Monitoring by Means of Sinusoidal EMF Signals Delivered by a Two-Phase n Poles AC Generator Used as a Sensor

Published Online: Jan 22, 2024

Page range: 69 - 83

Received: Dec 10, 2023

Accepted: Dec 20, 2023

DOI: https://doi.org/10.2478/bipcm-2023-0025

Keywords
Instantaneous angular speed, measuring method, AC generator, sinusoidal EMF signal, signal processing

© 2023 Mohammed Khdair et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Improving Instantaneous Angular Speed Monitoring by Means of Sinusoidal EMF Signals Delivered by a Two-Phase n Poles AC Generator Used as a Sensor

Published Online: Jan 22, 2024

Page range: 69 - 83

Received: Dec 10, 2023

Accepted: Dec 20, 2023

DOI: https://doi.org/10.2478/bipcm-2023-0025

KeywordsInstantaneous angular speed, measuring method, AC generator, sinusoidal EMF signal, signal processing

© 2023 Mohammed Khdair et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Keywords
Instantaneous angular speed, measuring method, AC generator, sinusoidal EMF signal, signal processing