Premium
Two‐dimensional dc surface motor using window‐shaped coils
Author(s) -
Kano Yoshio,
Yamaguchi Masaki,
Sugawara Masayuki
Publication year - 1999
Publication title -
electrical engineering in japan
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.136
H-Index - 28
eISSN - 1520-6416
pISSN - 0424-7760
DOI - 10.1002/(sici)1520-6416(19990715)128:1<70::aid-eej9>3.0.co;2-c
Subject(s) - thrust , flux (metallurgy) , physics , excitation , air gap (plumbing) , current density , window (computing) , dc motor , mode (computer interface) , current (fluid) , mechanics , electrical engineering , acoustics , nuclear magnetic resonance , control theory (sociology) , materials science , engineering , computer science , thermodynamics , control (management) , composite material , quantum mechanics , metallurgy , operating system , artificial intelligence
The authors have been pursuing the possibility of using a two‐dimensional dc motor as a driver for a dining assistance apparatus. In this paper, a new type of dc surface motor using window‐shaped coils (DSM) is proposed by the authors. Equations describing the relation between the excitation mode of the window‐shaped coils and the thrust are derived. The driving characteristics of the DSM are summarized as follows: 1. The maximum flux density of the air gap is calculated to be 0.35 T when the exciting current is 1.8 A. The flux density actually obtained is only 20% of the maximum flux density magnitude (1.8 T) of the yokes (SS41). 2. The thrust constants in the x and y directions are 2.93 and 2.70 N/A, respectively, showing a discrepancy of only 8%. The maximum static thrust is over 5 N when the exciting current is 1.8 A. 3. Good positioning accuracy of 7.5% was achieved when the DSM was subjected to the PD control method. © 1999 Scripta Technica, Electr Eng Jpn, 128(1): 70–77, 1999