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Steering wheel angle sensor and method for fault detecting of a steering wheel angle sensor

An angle sensor and fault detection technology, applied in the direction of converting sensor output, using electric/magnetic devices to transfer sensing components, instruments, etc., can solve problems such as expensive and complex construction

Inactive Publication Date: 2019-02-01
丹佛斯动力系统有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, the use of a second sensor makes construction complex and expensive

Method used

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  • Steering wheel angle sensor and method for fault detecting of a steering wheel angle sensor
  • Steering wheel angle sensor and method for fault detecting of a steering wheel angle sensor
  • Steering wheel angle sensor and method for fault detecting of a steering wheel angle sensor

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Embodiment Construction

[0026] The steering wheel angle sensor consists of a first part and a second part. The first part is stationary and is, for example, fixed to the housing. The second part is rotatably fixed to the steering wheel shaft. The first part comprises two first signal generating means 1 , 2 and two second signal generating means 3 , 4 . For this purpose, for example, the first part may comprise a transmitting coil, which is merely a circular coil around the axis of the steering wheel shaft. This transmit coil provides a substantially vertical field at the second portion. The second part is in the form of a target with a coil wound around the axis of the steering wheel shaft so that the transmitting coil induces a voltage in the target. The induced voltage is 90° ahead of the transmitting coil (i.e. the current in the transmitting coil). The target resonates in phase with its induced current and induced voltage. The first part also includes receiving coils, one receiving coil havi...

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PUM

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Abstract

A steering wheel angle sensor is described comprising a first part and a second part, wherein the first part and the second part are moveable relative to each other in rotational direction and the first part comprises at least one first signal generating means (1, 2) generating a sine signal (x2, x5) in response to an angular position of the second part and at least one second signal generating means (3, 4) generating a cosine signal (y2, y5) in response to the angular position of the second part. Such a steering wheel angle sensor should allow a simple fault detection. To this end fault detecting means (9) are provided, wherein the fault detecting means (9) form a sum of the square of the sine signal (x2, x5) and the square of the cosine signal (y2, y5) and generates a fault signal, if the sum is not within a predetermined range.

Description

field of invention [0001] The present invention relates to a steering wheel angle sensor comprising a first part and a second part, wherein the first part and the second part are movable relative to each other in a rotational direction, and the first part comprises a At least one first signal generating means generating a sinusoidal signal in response to the angular position of said second portion and at least one second signal generating means generating a cosine signal in response to said angular position of said second portion. [0002] Furthermore, the invention relates to a method for fault detection of a steering wheel angle sensor, said sensor comprising a first part and a second part, wherein said first part and said second part are movable relative to each other in a rotational direction, and said first part comprises at least one first signal generating means for generating a sine signal in response to the angular position of said second part and at least one second ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B62D15/02G01B7/30G01B21/22
CPCB62D15/021G01B7/30G01B21/22B62D5/049G01D5/2073G01D5/24466G01B7/003G01B7/026G01B7/14G01D5/12G01D5/14G01D5/145G01D11/245
Inventor 奥利·福尔克·索伦森乔根·克鲁斯博格索伦·温克勒·拉斯马森丹尼斯·格雷格森
Owner 丹佛斯动力系统有限公司
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