Mixed Critical Resolver-to-Digital Conversion for Safety-Related Servo Drive Applications

Konferenz: PCIM Europe 2023 - International Exhibition and Conference for Power Electronics, Intelligent Motion, Renewable Energy and Energy Management
09.05.2023-11.05.2023 in Nürnberg, Germany

doi:10.30420/566091178

Tagungsband: PCIM Europe 2023

Seiten: 8Sprache: EnglischTyp: PDF

Autoren:
Schmidt, Tobias; Krah, Jens Onno (TH Köln, Cologne, Germany)
Holtz, Joachim (University of Wuppertal, Germany)

Inhalt:
A σ-δ ADC-based approach for converting the analog resolver signals into three independent digital position signals – two safety-related and one non-safe – including diagnostics is presented. Comparable to functionally safe encoders for motorintegration, both safe position signals are ready for evaluation by a higher-level safe logic. The almost completely digital signal processing enables a low-cost implementation that efficiently suppresses even high electromagnetic interferences (EMI) from the power stage.