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Rotary machine with position sensor

A technology for rotating machines and sensors, applied in the direction of converting sensor output, electric/magnetic position measurement, instruments, etc., which can solve the problems of high cost and expensive optical system manufacturing

Pending Publication Date: 2022-02-22
ROBERT BOSCH GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Furthermore, optical systems are relatively expensive to manufacture and expensive to produce and require special expertise

Method used

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  • Rotary machine with position sensor
  • Rotary machine with position sensor
  • Rotary machine with position sensor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0043] figure 1 A printed circuit board 6 is shown, which here has a plurality of layers 66 , 67 and 68 . In this case, the printed circuit board has a first surface 6 a which points here to the right and in particular in the direction of the pole rotor 2 . Furthermore, the printed circuit board has a rear surface on which components, such as a control unit (not shown), can likewise be arranged.

[0044] The pole rotor 2 rotates about an axis of rotation D and has in its interior (not shown) at least one magnetic element and in particular a permanent magnet. Reference numeral 22 designates the circumference of the pole rotor.

[0045] A circumferential groove 62 and in particular a milled profile are formed in the printed circuit board 6 . Reference numeral 64 designates a (not milled) island-like region which is completely surrounded by groove 62 . In particular, a number of position sensors 42 are arranged on this island-shaped area 64 . The position sensors are here un...

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PUM

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Abstract

The invention relates to a rotary machine (1), in particular an electric motor (1), having a position detection means (4) for detecting a rotational position of a pole rotor (2) that can be rotated about an axis of rotation, wherein the pole rotor has a periphery (22) and wherein the position detection means (4) has at least one first position sensor (42) for detecting a change in the magnetic field (H) and at least one magnetic element (44) is arranged on the pole rotor, and wherein the position detection means further has at least one printed circuit board (6), electronic components are arranged on the printed circuit board, and the first position sensor (42) is also arranged at least indirectly on the printed circuit board. According to the invention, the first position sensor (42) extends at least partially into the space of the pole rotor surrounded by the periphery (22).

Description

technical field [0001] The present invention relates to a rotating machine and in particular to an electric motor. Background technique [0002] Such machines have been known from the prior art for a long time. It is also known from the prior art to detect the rotational position of such rotary machines, in particular during operation. Furthermore, it is also known to control and / or regulate such machines, such as, for example, electric motors, as a function of this rotational position. An electric motor sensor capable of detecting the rotational orientation is used for this purpose. Position-measuring systems are known here, which detect a corresponding rotational position or rotational orientation in part using optical, magnetic or coil technology. [0003] Optical systems are in part mechanically rather sensitive and require low mechanical tolerances during assembly (in particular due to thermal expansion). Furthermore, optical systems are relatively expensive to manu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K11/215H02K1/24H02K1/27G01B7/00G01B7/30
CPCH02K11/215H02K1/24H02K1/27G01B7/003G01B7/30H02K11/33G01D5/145H02K29/08
Inventor D·卢格尔G·邦德
Owner ROBERT BOSCH GMBH