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Sensor device for determining at least one rotation property of rotating element

A sensor device, a technology of rotating elements, applied in the direction of converting sensor output, using electric/magnetic devices to transfer sensing components, measuring devices, etc., can solve problems such as no longer ensuring accurate position, loss of synchronization, etc.

Active Publication Date: 2016-01-06
ROBERT BOSCH GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
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Problems solved by technology

However, if the half-time interval of the tooth / transmitter gap pair is greater than the time interval of the tooth / backlash pair, the motor control resynchronizes to the wrong angle, or if it was already synchronized, it loses synchronization because the motor control exact location is no longer ensured

Method used

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  • Sensor device for determining at least one rotation property of rotating element
  • Sensor device for determining at least one rotation property of rotating element

Examples

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Embodiment Construction

[0017] figure 1 A schematic diagram showing the structure of a sensor device 10 according to the invention for determining at least one rotational characteristic of a rotating element 12 . In the illustrated embodiment, the rotational characteristic relates to the number of revolutions of the rotational element 12 . However, it is understood that other rotational properties, such as angular velocity and angular acceleration, can also be detected by means of sensor device 10 .

[0018] The rotating element 12 is, for example, the crankshaft of an internal combustion engine. The sensor device 10 includes at least one transmitter 14 and a transmitter wheel 16 . The transmitter wheel 16 is connected to the rotary element 12 . The transmitter wheel 16 has teeth 18 and tooth gaps 20 between the teeth 18 . The transmitter wheel 16 has, for example, a number of 58 teeth 18 . The width 22 of the tooth gap 20 may be the same as the width 24 of the tooth 18 . The transmitter wheel ...

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Abstract

The invention provides a sensor device (10) for determining at least one rotation property of a rotating element (12). The sensor device (10) comprises at least one transmitter (14) and a transmitter wheel (16). The transmitter wheel (16) has teeth (18), tooth spaces (20) between the teeth (18) and at least one transmitter wheel space (26). The structure of the transmitter (14) is used for generating an output signal (46). The output signal (46) comprises at least a first value (52) assigned to the teeth (18) or a second value (54) assigned to a tooth gap (20). The at least one transmitter wheel space (26) is formed so that the output signal (46) comprises a third value (56) which is assigned to the transmitter wheel space (26) and the size is different with the second value (54) .

Description

Background technique [0001] Various sensors for detecting at least one rotational property of a rotating element are known from the prior art. Here, a rotational characteristic is generally understood to be a characteristic which at least partially describes the rotation of the rotating element. This can be, for example, angular velocity, rotational speed, angular acceleration, rotational angle, angular position or other properties which can characterize a continuous or discontinuous, uniform or non-uniform rotation or rotation of the rotary element. Examples of such sensors are known from Konrad Reif (Hrsg.): "Sensorenim Kraftfahrzeug", 1st edition 2010, pp. 63-73 and pp. 120-129. A particular focus of the invention lies in the detection of the rotational speed of the crankshaft or camshaft, although the invention is in principle not restricted thereto. [0002] It is known, for example, in the control of internal combustion engines to use incremental encoders on the cranks...

Claims

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Application Information

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IPC IPC(8): G01D5/56
CPCG01D5/2457G01P3/487
Inventor F·西古拉K·莱
Owner ROBERT BOSCH GMBH
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