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Method for analyzing signals from an angle sensor

一种角度传感器、传感器元件的技术，应用在转换传感器输出、采用电/磁装置传递传感构件、仪器等方向，能够解决测量结果高错误叠加、差测量结果等问题

Active Publication Date: 2012-07-04
VTESCO TECH GMBH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

As a result, external influences causing this pitch variation lead to measurement results and high error superposition of these 2D Hall sensor elements, GMR, TMR and inductive sensor elements, and this error leads to extremely poor measurement results

Method used

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  • Method for analyzing signals from an angle sensor
  • Method for analyzing signals from an angle sensor
  • Method for analyzing signals from an angle sensor

Examples

Experimental program
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Embodiment Construction

[0023] figure 1 An angle sensor 8 is shown with a rotor 2 , for example a brushless motor, on which a rotatable element 3 is arranged for fluctuations in the field. The rotatable element 3 is designed here as a dipole magnet, the north pole N and the south pole S being marked. Depending on the angle of rotation α of the rotor 2 relative to the brushless motor, in the sensor chip 9 of the angle sensor 8 a first linearly independent vector 15 of the field strength is induced by induction (the first linearly independent vector is denoted here as H X ) and a second linearly independent vector of field strength 16 (the second linearly independent vector is denoted here as H Y ). These vectors 15 , 16 are generated, for example, by a magnetic field and depend very strongly on the angle of rotation α and the associated position of the rotatable element 3 . The first sensor element 4 designed here as a vertical Hall element and the second sensor element 5 also designed as a vertica...

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Abstract

The invention relates to a method for analyzing signals from an angle sensor comprising at least two sensing elements which span a plane and comprising a rotatable element for varying said plane, said element being spaced from same. The angle sensor also comprises a brushless electromotor which is controlled according to said method. The aim of the invention is to provide a method for analyzing signals from an angle sensor comprising at least two sensing elements, said method producing high-definition measured results using sensing elements that map a full circle. This is achieved in that the sensing elements capture at least one first and one second vector of the field lying on said plane, said vectors being linearly independent of each other. A further variable, which is dependent on the distance between the plane and the rotatable element, is additionally detected, and the amplitudes of the signals of the first and the second sensing elements are controlled with the value of the further variable.

Description

technical field [0001] The invention relates to a method for analyzing signals of an angle sensor having: at least two sensor elements defining a plane; and a rotatable element spaced from the plane for field variation, the present invention The invention also relates to a brushless motor controlled according to the method. Background technique [0002] Angle sensors are required in several technical fields. Especially in the automotive industry, angle sensors are required to detect, for example, the position of control valves and throttle valves, the position of variable camshaft controls, the position of variable-geometry turbines or the position of the drive motor of electric steering. For brushless motors, in order to rectify the alternating current that drives the motor, first of all, when the brushless motor is working at high power, that is, when it is driven in a different speed range, it is therefore from very low speed to high speed and also applied When reverse ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01D5/244G01D3/036G01D5/14
CPCG01D5/24476G01D5/2448G01D5/24461G01D5/145G01D3/0365G01D3/036G01D5/14G01D5/244
Inventor 维尔纳 瓦尔拉芬
Owner VTESCO TECH GMBH
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