Effect of damper winding on accuracy of wound‐rotor resolver under static‐, dynamic‐, and mixed‐eccentricities

Abstract

Most of the resolvers used in high precision servomechanism are two-pole, wound-rotor ones. The configuration of their stator winding is based on variable-turn, on-tooth method. However, there is different opportunity for their rotor: using distributed winding or on-tooth one. Furthermore, based on the operating principle of the resolver its rotor needs a single phase winding. While, in many practical cases a two-phase winding that one of them is short-circuited (damper winding) is employed for rotor. In this study, the effect of different configurations for rotor winding on the resolver performance in terms of the average of absolute position error, maximum position error, and total harmonic distortion of induced voltages envelopes is investigated. Then, the effect of damper winding on the performance of the resolver under static-, dynamic-, and mixed-eccentricities are studied. In this study, all simulations are performed using three-dimensional time stepping finite-element method and finally, the experimental tests on the studied sensor using a precision test setup are employed to approve the simulation results.

Improving the performance of helical motion resolver based on accurate modelling of longitudinal end effect

“…Then, the induced voltages in signal windings are amplitude modulated (AM) voltages whose envelope is proportional to the sine and the cosine of the rotor's position [10].…”

“…The excitation winding is fed using a high‐frequency sinusoidal voltage through a rotary transformer. Then, the induced voltages in signal windings are amplitude modulated (AM) voltages whose envelope is proportional to the sine and the cosine of the rotor's position [10].…”

Reliability Analysis on Winding Configurations of Variable Reluctance Resolver Under Faulty Conditions

“…In a reliability study, optimizing the configurations to achieve more tolerability in faulty conditions is valuable. Hence, in [3] and [4], more accuracy and lower degradation under Short Circuit (SC) and eccentricity have yielded by modifying the winding arrangement and adding damping to the rotor winding of the Wound Rotor (WR) resolver. Moreover, [5] and [6] have optimally designed a rotor contour of a Variable Reluctance (VR) resolver to achieve higher accuracy and tolerability under faulty conditions.…”

Pozisyon doğruluğu için SMSM'lerde Luenberg durum gözlemcisi tabanlı RDK tasarımı

“…Parametre gözlemcisi yöntemleri kararlı durum analizi için önemlidir [7]. Özellikle, Luenberger durum gözlemcisi RDK ile kullanılabilir [8]. Bununla birlikte, Luenberger gözlemcisine dayalı parametre gözlemcisi tasarımıyla, genlik dengesizliğinden kaynaklanan tork dalgalanmasının azaltılabileceği söylenebilir [9].…”