Dr. Nasiri Gheydari, regarding this project, stated: “Position sensors play a decisive role in the closed-loop control of electrical machines. Although advanced sensorless control methods for electrical machines have gained significant popularity, in many applications sensor-based control is still preferred.”
She continued: “In rotary machines, angular position, and in linear machines, the linear positional displacement along the axis, are key control parameters. Numerous sensors have been introduced in industry to determine these parameters. The most common of these are optical encoders, differential transformers, Hall-effect sensors, and resolvers. However, in highly contaminated environments, where temperature fluctuations and vibrations are considerable, resolvers are generally favored.”
The researcher further explained: “Most of the studies carried out on resolvers have been related to rotary resolvers, while relatively fewer investigations have been devoted to linear resolvers. The objective of this project is to propose a novel design for a variable reluctance linear resolver with a sinusoidal cross-section.”
In conclusion, Dr. Nasiri Gheydari emphasized: “Wherever a linear motor exists, such a sensor will be required. Nevertheless, given the focus of this project on high-speed applications, electric high-speed trains are a particularly suitable example for the deployment of this resolver.”