Open AccessOperational range extension method for limited‐angle torque motors with irregular slot numbers
Author(s) -
Ma Pengcheng,
Wang Qian,
Li Yong,
Jiang Shanlin,
Zhao Meng,
Feng Ziliang
Publication year - 2021
Publication title -
iet electric power applications
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.815
H-Index - 97
eISSN - 1751-8679
pISSN - 1751-8660
DOI - 10.1049/elp2.12046
Subject(s) - torque , range (aeronautics) , control theory (sociology) , finite element method , computer science , electromagnetic coil , extension (predicate logic) , tracking (education) , engineering , structural engineering , physics , electrical engineering , artificial intelligence , control (management) , thermodynamics , programming language , aerospace engineering , psychology , pedagogy
A modified model of a limited‐angle torque motor (LATM) with irregular slot numbers is proposed for developing an operational range extension method for LATMs. The modified model is derived by considering the effects of the asymmetrical winding structure and magnetic flux leakage, which are validated by finite element analysis and experimental measurements. Based on the modified model, accuracy and time consumption of the simulation can be improved. For the operational range extension method, extended angle range selection theory and constraint conditions are proposed, and the relationship between the sinusoidal tracking characteristic and leading parameters is established by theoretical analysis. A simulation and a prototype machine experiment on an LATM using the new method are carried out. The results show that the proposed operational range extension method can reduce the weight and volume of the LATM without changing sinusoidal tracking characteristics, which proves the feasibility of applying the new method in the oscillating scan system to realize lightness and miniaturisation of the system.