[미국특허]
Device for determining the angular position of a rotating shaft
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
G01B-007/30
G01D-005/14
G01L-003/10
출원번호
US-0202907
(1998-12-23)
우선권정보
DE9716985 (1997-04-23)
국제출원번호
PCT/EP98/02397
(1998-04-23)
§371/§102 date
19981223
(19981223)
국제공개번호
WO-9848244
(1998-10-29)
발명자
/ 주소
Apel Peter,DEX
Wilczek Klaus,DEX
출원인 / 주소
AB Eletronik GmbH, DEX
대리인 / 주소
Milde, Hoffberg & Macklin, LLP
인용정보
피인용 횟수 :
31인용 특허 :
6
초록▼
In order to improve the measurement possibilities with regard to a rotating shaft, including the whole angle area (0 to 360.degree.), a rotation angle sensor is mounted that is provided with a radial-bipolar ring-shaped magnetic element (3), three air gaps (5, 6, 7, 8) displaced by an equal angle (.
In order to improve the measurement possibilities with regard to a rotating shaft, including the whole angle area (0 to 360.degree.), a rotation angle sensor is mounted that is provided with a radial-bipolar ring-shaped magnetic element (3), three air gaps (5, 6, 7, 8) displaced by an equal angle (.phi.) being connected with said shaft, and with a stator element (4) of a magnetoconductive material, while a Hall integrated circuit element (1, 2) is inserted in at least two adjacent air gaps (5, 6, 7, 8). The two Hall integrated circuit elements (1, 2) can be connected to an evaluation unit (9) which records a voltage curve of the measured circuit for each circuit element (1, 2), assigns each flow voltage measure to a position angle on the Hall integrated circuit voltage curves, calculates from the position angles assigned to the flow voltage values the actual position angle and gives it as the start signal (A1, A2).
대표청구항▼
[What is claimed is:] [1.](a) at least one bipolar-radial annular magnet element connected with the shaft, and(b) at least one stator element made of a magnetically conductive material,(1) in which the annular magnet element is placed, and(2) in which at least three air gaps are located, displaced o
[What is claimed is:] [1.](a) at least one bipolar-radial annular magnet element connected with the shaft, and(b) at least one stator element made of a magnetically conductive material,(1) in which the annular magnet element is placed, and(2) in which at least three air gaps are located, displaced one from the other at an equal angle (.phi.), and(3) wherein a Hall IC element is disposed in each of two adjacent air gaps, each Hall IC element producing a flux voltage curve in response to rotation of the annular magnet element with respect to the stator element, and(c) an evaluation unit, connected to each Hall IC element, which(1) detects the Hall IC voltage curve produced by each respective Hall IC element, and(2) assigns each voltage value on each voltage curve to a position angle, and(3) from the position angles assigned to the voltage values, calculates the de facto position angle and produces an output signal representing said position angle.
Rudel, Christian; Hornberger, Jörg; Schäuble, Michael; Kisch, Michael, Absolute encoder and method for generating an absolute value for a angle of rotation.
Nakamura, Tsutomu; Ishihara, Toshihisa; Hamaoka, Takashi, Angular position detecting apparatus for linearly detecting angular position in a wider range.
Jerems,Frank; Rachui,Dirk; Froehlich,Ekkehart; Ruetz,Christian, Device for determining a steering angle and a torque that is exerted on a steering shaft.
Frederick,Gary L.; Rose,Richard A., Methods and apparatus for sensing angular position and speed of a rotatable shaft utilizing linearized annular magnet and commutated ratiometric hall sensors.
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