[특허]Impeller position compensation using field oriented control

[미국특허] Impeller position compensation using field oriented control 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	F04B-035/04 H02P-006/18 F04D-013/02 F04D-029/048 F04D-029/42 F04D-029/047 F04D-015/00 A61M-001/12 A61M-001/10
출원번호	US-0748780 (2013-01-24)
등록번호	US-9371826 (2016-06-21)
발명자 / 주소	Yanai, Masamichi Campau, Jeffrey H. Nanna, Jason C.
출원인 / 주소	THORATEC CORPORATION
대리인 / 주소	Kilpatrick Townsend & Stockton LLP
인용정보	피인용 횟수 : 8 인용 특허 : 205

초록 ▼

A centrifugal pump system having an impeller rotating with first and second magnetic structures on opposite surfaces. A levitation magnetic structure is disposed at a first end of a pump housing having a levitating magnetic field for axially attracting the first magnetic structure. A multiphase magnetic stator at a second end of the pump housing generates a rotating magnetic field for axially and rotationally attracting the second magnetic structure. A commutator circuit provides a plurality of phase voltages to the stator. A sensing circuit determines respective phase currents. A controller calculates successive commanded values for the phase voltages in response to the determined phase currents and a variable commutation angle. The angle is selected to correspond to an axial attractive force of the stator that maintains a levitation of the impeller at a centered position within the pumping chamber.

대표청구항 ▼

1. A centrifugal pump system comprising: a disc-shaped impeller rotating about an axis and having a first magnetic structure disposed at a first surface and a second magnetic structure disposed at a second surface;a pump housing defining a pumping chamber which receives the impeller;a levitation magnetic structure disposed at a first end of the pump housing having a levitating magnetic field for axially attracting the first magnetic structure;a multiphase magnetic stator disposed at a second end of the pump housing for generating a rotating magnetic field for axially and rotationally attracting the second magnetic structure;a commutator circuit for providing a plurality of phase voltages to the stator;a sensing circuit determining respective phase currents flowing in response to the phase voltages; anda controller configured to: calculate successive commanded values for the phase voltages in response to the determined phase currents; andselect a variable commutation angle, wherein the angle is selected to correspond to an axial attractive force of the stator that maintains a levitation of the impeller at a centered position within the pumping chamber. 2. The system of claim 1 wherein the levitating magnetic field is substantially constant. 3. The system of claim 2 wherein the levitation magnetic structure is comprised of a permanent magnet material. 4. The system of claim 1 wherein the angle for calculating the commanded values is determined in response to a phase current characteristic and a rotational speed of the impeller. 5. The system of claim 4 wherein the phase current characteristic is comprised of a peak current flowing in the stator during a predetermined sampling interval. 6. The system of claim 4 wherein the controller includes a lookup table storing predetermined values for the commutation angle corresponding to respective ranges of the phase current characteristic and the rotational speed.

이 특허에 인용된 특허 (205) 인용/피인용 타임라인 분석

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Schoeb Reto,CHX ; Hugel Joerg,CHX ; Mendler Niklaus,DEX, Rotary machine with an electromagnetic rotary drive.
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Watterson Peter Andrew,AUX ; Tansley Geoffrey Douglas,AUX ; Woodard John Campbell,AUX, Rotary pump with hydrodynamically suspended impeller.
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Woodard, John Campbell; Watterson, Peter Andrew; Tansley, Geoffrey Douglas, Rotary pump with hydrodynamically suspended impeller.
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Woodard,John Campbell; Watterson,Peter Andrew; Tansley,Geoffrey Douglas, Rotary pump with hydrodynamically suspended impeller.
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Golding Leonard A. R. ; Smith William A., Rotodynamic pump with non-circular hydrodynamic bearing journal.
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Wampler Richard K., Sealless rotary blood pump.
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Wampler Richard K., Sealless rotary blood pump.
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Wampler, Richard K., Sealless rotary blood pump.
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Wampler, Richard K., Sealless rotary blood pump.
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Wampler Richard K. (Granite Bay CA), Sealless rotary blood pump with passive magnetic radial bearings and blood immersed axial bearings.
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Golding Leonard A. R. (Moreland Hills OH) Smith William A. (Lyndhurst OH) Wade Warren F. (Orange Village OH), Sealless rotodynamic pump with fluid bearing.
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Schmitz-Rode, Thomas; Gunther, Rolf W., Self-deploying axial-flow pump introduced intravascularly for temporary cardiac support.
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Yaegashi, Mitsutoshi, Sensorless magnetic bearing type blood pump apparatus.
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LaRose, Jeffrey A.; Shambaugh, Charles R., Shrouded thrust bearings.
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Ranford Alan B. (St. Louis MO), Single use syringe.
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Wampler Richard K. (Gold River CA) Carriker John W. (Gold River CA) Butler Kenneth C. (Carmichael CA) Moise John C. (Carmichael CA), Single-stage axial flow blood pump.
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Antaki James F. ; Choi Seongjin ; Boston John Robert ; Butler Kenneth C. ; Thomas Douglas C. ; Amin Devin V., Speed control system for implanted blood pumps.
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Nash John (145 Oak St. Downingtown PA 19335), Spiral wire bearing for rotating wire drive catheter.
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Derrieu Guy (Cagnes sur Mer FRX) Raynier Bernard (Nice FRX), Stabilized pulverulent active agents, compositions containing them, process for obtaining them and their applications.
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LaRose, Jeffrey A.; Shambaugh, Charles R., Stabilizing drive for contactless rotary blood pump impeller.
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Stobie Robert ; Guo George, Suture rings for rotatable artificial heart valves.
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Erbel, Reimund; Voegele, Gerald; Weisener, Thomas; Maya, Andreas; Bark, Carlo; Widmann, Mark, System for actively supporting the flow of body fluids.
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Stevens John H. ; Sterman Wesley D. ; Gifford ; III Hanson S. ; Machold Timothy R., System for cardiac procedures.
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Talpade Dnyanesh, System for treating congestive heart failure.
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Schachar Ronald A. (P.O. Box 1039 Denison TX 75020), Treatment of presbyopia and other eye disorders.
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Giardini Dante S. (Dearborn Heights MI) Unnewehr Lewis E. (Birmingham MI), Variable reluctance motor pump.
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Lewis Jeffrey P. ; Werley Troy A. ; Newswanger Raymond ; Fulmer Glenn, Ventricular assist device.
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Yu, Long Sheng; Piferi, Peter; Parnis, Steven M., Ventricular connector.
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이 특허를 인용한 특허 (8) 인용/피인용 타임라인 분석

Medvedev, Alexander; Rainier, J. Bradford; Sami, Muhammad K., Blood pump and method of suction detection.
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Ozaki, Takayoshi; Yamada, Hiroyuki; Sugiura, Ken, Centrifugal pump apparatus.
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Medvedev, Alexander; Yu, Shunzhou; You, Ren, Heart beat identification and pump speed synchronization.
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Yanai, Masamichi; Campau, Jeffrey H.; Nanna, Jason C., Impeller position compensation using field oriented control.
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Yanai, Masamichi; Nanna, Jason, Impeller suspension mechanism for heart pump.
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Medvedev, Alexander; Sami, Muhammad, Pressure/flow characteristic modification of a centrifugal pump in a ventricular assist device.
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Ozaki, Takayoshi; Yamada, Hiroyuki; Sugiura, Ken; Mori, Takehisa; Tsubouchi, Takeshi, Rotation drive device and centrifugal pump apparatus employing same.
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Yu, Shunzhou; Medvedev, Alexander; You, Ren, System and method for controlling the position of a levitated rotor.
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IPC	Description
A	생활필수품
A62	인명구조; 소방(사다리 E06C)
A62B	인명구조용의 기구, 장치 또는 방법(특히 의료용에 사용되는 밸브 A61M 39/00; 특히 물에서 쓰이는 인명구조 장치 또는 방법 B63C 9/00; 잠수장비 B63C 11/00; 특히 항공기에 쓰는 것, 예. 낙하산, 투출좌석 B64D; 특히 광산에서 쓰이는 구조장치 E21F 11/00)
A62B-1/08	.. 윈치 또는 풀리에 제동기구가 있는 것

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구성항목	기본정보 상세정보 관리번호, 국가코드, 자료구분, 상태, 출원번호, 출원일자, 공개번호, 공개일자, 등록번호, 등록일자, 발명명칭(한글), 발명명칭(영문), 출원인(한글), 출원인(영문), 출원인코드, 대표IPC 관리번호, 국가코드, 자료구분, 상태, 출원번호, 출원일자, 공개번호, 공개일자, 공고번호, 공고일자, 등록번호, 등록일자, 발명명칭(한글), 발명명칭(영문), 출원인(한글), 출원인(영문), 출원인코드, 대표출원인, 출원인국적, 출원인주소, 발명자, 발명자E, 발명자코드, 발명자주소, 발명자 우편번호, 발명자국적, 대표IPC, IPC코드, 요약, 미국특허분류, 대리인주소, 대리인코드, 대리인(한글), 대리인(영문), 국제공개일자, 국제공개번호, 국제출원일자, 국제출원번호, 우선권, 우선권주장일, 우선권국가, 우선권출원번호, 원출원일자, 원출원번호, 지정국, Citing Patents, Cited Patents
저장형식	Text(ASCII format) Excel format PIAS분석(.xls)
메일정보	받는사람 (필수) @ 보내는사람 (선택) @ 제목 내용 KISTI 검색결과 이메일 서비스
안내	총 건의 자료가 검색되었습니다. 다운받으실 자료의 인덱스를 입력하세요. (1-10,000) 검색결과의 순서대로 최대 10,000건 까지 다운로드가 가능합니다. 데이타가 많을 경우 속도가 느려질 수 있습니다.(최대 2~3분 소요) 다운로드 파일은 UTF-8 형태로 저장됩니다. 파일의 내용이 제대로 보이지 않을실 때는 웹브라우저 상단의 보기 -> 인코딩 -> 자동선택 여부를 확인하십시오. ~ Text(ASCII format) Excel format

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[미국특허] Impeller position compensation using field oriented control 원문보기

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[미국특허] Impeller position compensation using field oriented control 원문보기

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이 특허에 인용된 특허 (205) 인용/피인용 타임라인 분석

이 특허를 인용한 특허 (8) 인용/피인용 타임라인 분석

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