Claims
- 1. A position sensor comprising
- a stationary stator;
- a mobile element located outside of the stationary stator, and comprising:
- a coupling shaft; and
- a magnet formed integral with the coupling shaft;
- a first air gap being formed between the stationary stator and the mobile element;
- two secondary air gaps formed in the stationary stator, each of the two stationary air gaps being approximately perpendicular to the first air gap; and
- a Hall probe housed in a first of the two secondary air gaps;
- wherein a ratio L/E is greater than 3, where L designates a width of a magnetic pole and E designates a width of the first air gap.
- 2. The position sensor according to claim 1, wherein L/E is greater than 6.
- 3. A position sensor comprising:
- a stationary stator;
- a mobile element located outside of the stationary stator, and comprising:
- a coupling shaft; and
- a magnet formed integral with the coupling shaft;
- a first air gap being formed between the stationary stator and the mobile element;
- two secondary air gaps formed in the stationary stator, each of the two stationary air gaps being approximately perpendicular to the first air gap; and
- a Hall probe housed in a first of the two secondary air gaps;
- wherein a sensing coil is housed in a second of the at least two secondary air gaps.
- 4. A position sensor comprising:
- a stationary stator;
- a mobile element located outside of the stationary stator, and comprising:
- a coupling shaft; and
- a magnet formed integral with the coupling shaft;
- a first air gap being formed between the stationary stator and the mobile element;
- two secondary air gaps formed in the stationary stator, each of the two stationary air gaps being approximately perpendicular to the first air gap; and
- a Hall probe housed in a first of the two secondary air gaps;
- wherein the magnet comprises adjacent thin parts, magnetized crosswise in alternate direction.
- 5. A position sensor comprising:
- a stationary stator;
- a mobile element located outside of the stationary stator, and comprising:
- a coupling shaft; and
- a magnet formed integral with the coupling shaft;
- a first air gap being formed between the stationary stator and the mobile element;
- two secondary air gaps formed in the stationary stator, each of the two stationary air gaps being approximately perpendicular to the first air gap; and
- a Hall probe housed in a first of the two secondary air gaps;
- wherein the magnet comprises a thin disk exhibiting two parts magnetized crosswise each extending over about .pi..
- 6. A position sensor comprising:
- a stationary stator;
- a mobile element located outside of the stationary stator, and comprising:
- a coupling shaft; and
- a magnet formed integral with the coupling shaft;
- a first air gap being formed between the stationary stator and the mobile element;
- two secondary air gaps formed in the stationary stator, each of the two stationary air gaps being approximately perpendicular to the first air gap;
- a Hall probe housed in a first of the two secondary air gaps; and
- a temperature probe, formed in a housing in the stationary stator.
Priority Claims (1)
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91 00973 |
Dec 1990 |
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Parent Case Info
This is a Continuation, of application Ser. No. 07/917,061 filed on Oct. 1, 1992, now U.S. Pat. No. 5,528,139 which was filed as A 371 of PCT Application No. PCT/FR91/00973 on Dec. 5, 1991.
US Referenced Citations (5)
Continuations (1)
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917061 |
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