High-Speed Servo Valve

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For hydraulics & pneumatics fluid control

Hydraulics & Pneumatics

High-Speed Servo Valve
High-Speed Servo Valve

Santest presents the DA seires, a new direct acting servo valve for hydraulics & pneumatics fluid control. Santest DA series employs “Dual Halbach Magnet Array” which reinforces magnetic fields to drive a voice coil coming with differential moving coils.  By adopting dual halbach magnet array, the strength of magnetic fields approximetely increse double and then the differential coils elevate the thrust force furthermore. 

The end of spool fixes to the voice coil. When a current flows to the voice coil, a strong thrust force is generated to move the spool in an axial direction. In the other end of spool , a magnet is  installed to make Hall element perceive the position of the spool. The coil there directly detects velocity of the spool. This non-contact detecting structure results in a very stable feedback and also enable to get an acceleration signal easily by differentiating velocity signal, which leads to a further high response speed. 

The design of sleeve and spool is optimized to minimize flow forces. Patented in Japan, Patent pending in USA & German.

Posted on April 4, 2017 - (492 views)
Santest Co., Ltd.
51-2 Shimaya 4-Chome Konohana-ku
554-8691 Osaka - Japan
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Santest is an innovative developer of unique & high quality products such as non-contact linear transducers, servo controllers, and logistic shock recorders in their leading technology of magnetostrictive displacement transducers.

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