サーボ弁のトルクモータの特性 : 第1報, 静特性解析

概要

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This paper deals with the static characteristics of a torque motor used in servovalves. The torque motor consists of permanent magnets, pole pieces, coils, an armature, a flapper and a flexure tube. Analytical study on magnetic circuit and elastic structure are performed, and equations are obtained to describe relationships between electric current and (a) magnetic moment acing on the armature; (b) flapper displacement. The static stability criterion of the system is given in a nondimensional form. Although the magnetic flux leakage and the reluctance of the permanent magnet decrease the torque gain of electric current, they reduce partly the nonlinear character of the system such as change of local spring constant. The static stability of the torque motor system can be established by giving sufficient rigidity to the elastic components.
一般社団法人日本機械学会の論文
1998-01-25