Investigation of angle measurement errors in a PCB-based resolver under eccentricity conditions

Abstract

The resolvers are widely employed in motor control applications such as industrial machinery, electric vehicles, and robotic systems to determine the motor shaft angle. In conventional resolvers with radial-flux and rotor-wound structures, rotor windings are typically used. However, in this study, these windings were replaced with a Variable Reluctance Rotor configuration to enhance performance. A new high-performance resolver based on an axial-flux design was proposed. The resolver windings were implemented on a printed circuit board (PCB), forming a compact and cost-effective structure. Finite Element Method (FEM) simulations were conducted to evaluate the design. To assess the resolver’s performance, four different eccentricity conditions were introduced, and the system’s performance under these conditions was analyzed. The simulation results are presented graphically, illustrating both the maximum and average measurement errors. Furthermore, the Total Harmonic Distortion (THD) of the sine and cosine output signals was evaluated to examine the influence of eccentricity-induced errors on signal quality.

Keywords

• PCB windings
• Position measurement
• Resolver
• Variable Reluctance.

Eksantriklik koşulları altında PCB tabanlı bir çözücüde açı ölçüm hatalarının incelenmesi

Abstract

Çözücüler, motor şaft açısını belirlemek için endüstriyel makineler, elektrikli araçlar ve robotik sistemler gibi motor kontrol uygulamalarında yaygın olarak kullanılmaktadır. Radyal akılı ve rotor sargılı yapılara sahip geleneksel çözücülerde tipik olarak rotor sargıları kullanılır. Bununla birlikte, bu çalışmada, performansı artırmak için bu sargılar Değişken Relüktanslı Rotor konfigürasyonu ile değiştirilmiştir. Eksenel akılı tasarıma dayalı yeni bir yüksek performanslı çözücü önerilmiştir. Çözücü sargıları, kompakt ve uygun maliyetli bir yapı oluşturan bir baskılı devre kartı (PCB) üzerine yerleştirilmiştir. Tasarımı değerlendirmek için Sonlu Elemanlar Yöntemi (FEM) simülasyonları yapılmıştır. Çözücünün performansını değerlendirmek için dört farklı eksantriklik koşulu tanıtılmış ve sistemin bu koşullar altındaki performansı analiz edilmiştir. Simülasyon sonuçları, hem maksimum hem de ortalama ölçüm hatalarını gösteren grafiksel olarak sunulmuştur. Ayrıca, eksantriklik kaynaklı hataların sinyal kalitesi üzerindeki etkisini incelemek için sinüs ve kosinüs çıkış sinyallerinin Toplam Harmonik Bozulması (THD) değerlendirilmiştir.

Keywords

• PCB sargıları
• Konum ölçümü
• Resolver
• Değişken Relüktans.

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