Title:
永久磁石支持回転部材の位置制御方法
Document Type and Number:
Japanese Patent JP2004519994
Kind Code:
A
Abstract:
Since disruptive forces can be continuously exerted upon a rotor during a pulsatile flow through a pump with a magnetically mounted rotor (permanent magnets and addition control current coils), it is necessary to adjust position i.e. modify axial rotor position very quickly. The control current should only result in small amounts of losses. According to the invention, the current is pulse-width modulated by the control current coils by means of a set value predetermined by a controller which is arranged downstream from a position sensing system. If the set value is high, it is switched to a higher voltage level and the real value of the position sensing system is stored for a defined period of time, respectively beginning with the switching flank of the control current, and the position sensing system is disconnected during said period of time.
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Inventors:
Hoffman, Jan
Andreas, Arndt
Markell, Tobias
Andreas, Arndt
Markell, Tobias
Application Number:
JP2002585812A
Publication Date:
July 02, 2004
Filing Date:
April 29, 2002
Export Citation:
Assignee:
Berlin Heart Akchen Gesell Shaft
International Classes:
F04D29/046; F04D3/00; F04D13/02; F04D13/06; F04D29/04; F04D29/048; F16C32/04; F16C39/06; H02K7/09; H02K7/14; H02P6/18; H02K5/128; (IPC1-7): H02P6/18; F04D13/02; F04D29/04; F16C32/04; H02K7/09
Attorney, Agent or Firm:
Yusuke Hiraki
Toshiaki Watanabe
Kenichi Imamura
Toshiaki Watanabe
Kenichi Imamura