Method for determining an angular error between a rotational angle value ascertained by means of an angle measuring system and a reference value

A technology for angle measurement and angle error, which is applied in the field of angle measurement systems, can solve expensive problems, achieve accurate verification and/or calibration, improve angle error calculation, and simplify calibration or verification

Active Publication Date: 2018-12-21
ROBERT BOSCH GMBH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

For calibration / verification, an external measurement-&calibration system may be used, which is very expensive

Method used

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  • Method for determining an angular error between a rotational angle value ascertained by means of an angle measuring system and a reference value
  • Method for determining an angular error between a rotational angle value ascertained by means of an angle measuring system and a reference value

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Embodiment Construction

[0025] exist figure 1 A preferred embodiment of the angle measuring system 100 according to the invention is schematically shown in . Angle measuring system 100 has an angle of rotation sensor 110 and an evaluation unit 120 .

[0026] In particular, evaluation unit 120 has a microcontroller 121 which has an input 121 a for the rotation angle signal of rotation angle sensor 110 . The associated interface 120 a is formed on the evaluation unit 120 . Angle of rotation sensor 110 can be connected to interface 120a, for example, via a connecting cable.

[0027] Angle of rotation sensor 110 is arranged on electric machine 10 with stator 11 and rotor 12 for measuring the rotational movement of rotor 12 .

[0028] Evaluation unit 120 is designed to acquire a rotational angle value from the rotational angle signal of rotational angle sensor 110 .

[0029] If the evaluation unit is configured as a controller, for example, the rotational angle value can be used in normal mode in the ...

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Abstract

The invention relates to an angle measuring system (100) and to a method for determining an angular error between a rotational angle value ascertained by means of an angle measuring system (100) and areference value. The rotational angle value is ascertained from a rotational angle signal of a rotational angle sensor (110) in an analysis unit (120) of the angle measuring system (100), which has the rotational angle sensor (110) and the analysis unit (120). The reference value is ascertained from a reference angle signal in the analysis unit (120) of the angle measuring system (100), and the angular error between the rotational angle value and the reference value is determined in the analysis unit (120) of the angle measuring system (100).

Description

technical field [0001] The invention relates to a method for determining an angular error between a rotational angle value acquired by means of an angle measuring system and a reference value, and an angle measuring system for carrying out the method. [0002] The invention will be described below mainly with reference to a vehicle drive. However, the invention is not restricted thereto, but is suitable for all angle measuring systems which are set up to acquire the current angle of rotation of a rotating element by means of an angle of rotation sensor and an evaluation unit with a microcontroller value. Background technique [0003] The electric machine is used intensively in the vehicle itself or to support a combustion motor in the drive train. During operation of an electric machine, it is often desirable to know the current angular position of the rotor of the electric machine as precisely as possible. For this purpose, angle measuring systems can be used which gener...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01D5/244
CPCG01D5/24485
Inventor C.容
Owner ROBERT BOSCH GMBH
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