Invention Grant
- Patent Title: Torque motor linearization
- Patent Title (中): 扭矩电机线性化
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Application No.: US12884847Application Date: 2010-09-17
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Publication No.: US08522821B2Publication Date: 2013-09-03
- Inventor: Ronald D. Olson , Torin R. Lewis
- Applicant: Ronald D. Olson , Torin R. Lewis
- Applicant Address: US CA Santa Clarita
- Assignee: Woodward HRT, Inc.
- Current Assignee: Woodward HRT, Inc.
- Current Assignee Address: US CA Santa Clarita
- Agency: BainwoodHuang
- Main IPC: F15B13/043
- IPC: F15B13/043

Abstract:
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.
Public/Granted literature
- US20120068095A1 TORQUE MOTOR LINEARIZATION Public/Granted day:2012-03-22
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