公开(公告)号：US20120068095A1

公开(公告)日：2012-03-22

申请号：US12884847

申请日：2010-09-17

申请人： Ronald D. Olson ,  Torin R. Lewis

发明人： Ronald D. Olson ,  Torin R. Lewis

IPC分类号： F16K31/02 ,  H02K1/12

CPC分类号： H02K26/00 ,  Y10T137/86598 ,  Y10T137/86614

摘要： A servovalve torque motor includes first and second pole pieces and an armature. Each of the first and second pole pieces includes an armature face that opposes the armature. The area of the armature face of the second pole piece is smaller than the area of the armature face of the first pole piece. The unequal areas of the first and second armature faces create a bias in the servovalve torque motor while allowing the first and second pole pieces to be disposed at equal distances from the armature to define substantially equal air gaps. The inclusion of substantially equal air gaps between the pole pieces and the armature reduces the maximum flux in the armature for the same bias and torque output, compared to conventional servovalve torque motors. The reduction in maximum armature flux decreases armature saturation and improves linearity during operation.

摘要翻译： 伺服阀转矩电动机包括第一和第二极靴和电枢。 第一和第二极靴中的每一个包括与电枢相对的电枢面。 第二极靴的电枢面的面积小于第一极靴的电枢面的面积。 第一和第二电枢面的不等面积在伺服阀转矩电动机中产生偏压，同时允许第一和第二极片设置在与电枢相等的距离处以限定基本相等的气隙。 与传统的伺服阀转矩电动机相比，在极靴和电枢之间包括基本上相等的气隙，减少了电枢中相同偏置和扭矩输出的最大磁通量。 最大电枢磁通量的减小可降低电枢饱和，并提高工作时的线性度。

公开(公告)号：US08522821B2

公开(公告)日：2013-09-03

申请号：US12884847

申请日：2010-09-17

申请人： Ronald D. Olson ,  Torin R. Lewis

发明人： Ronald D. Olson ,  Torin R. Lewis

IPC分类号： F15B13/043

CPC分类号： H02K26/00 ,  Y10T137/86598 ,  Y10T137/86614

摘要： A servovalve torque motor includes first and second pole pieces and an armature. Each of the first and second pole pieces includes an armature face that opposes the armature. The area of the armature face of the second pole piece is smaller than the area of the armature face of the first pole piece. The unequal areas of the first and second armature faces create a bias in the servovalve torque motor while allowing the first and second pole pieces to be disposed at equal distances from the armature to define substantially equal air gaps. The inclusion of substantially equal air gaps between the pole pieces and the armature reduces the maximum flux in the armature for the same bias and torque output, compared to conventional servovalve torque motors. The reduction in maximum armature flux decreases armature saturation and improves linearity during operation.

摘要翻译： 伺服阀转矩电动机包括第一和第二极靴和电枢。 第一和第二极靴中的每一个包括与电枢相对的电枢面。 第二极靴的电枢面的面积小于第一极靴的电枢面的面积。 第一和第二电枢面的不等面积在伺服阀转矩电动机中产生偏压，同时允许第一和第二极片设置在与电枢相等的距离处以限定基本相等的气隙。 与传统的伺服阀转矩电动机相比，在极靴和电枢之间包括基本上相等的气隙，减少了电枢中相同偏置和扭矩输出的最大磁通量。 最大电枢磁通量的减小可降低电枢饱和，并提高工作时的线性度。