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Method and device for determining sensor offset

A technology for determining devices, sensors, applied in measurement devices, transportation and packaging, test/calibration devices, etc., which can solve problems such as variable distortion

Pending Publication Date: 2020-09-22
ZF AUTOMOTIVE GERMANY GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, sensors will often have a constant offset by design that can distort the measured variable

Method used

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  • Method and device for determining sensor offset
  • Method and device for determining sensor offset
  • Method and device for determining sensor offset

Examples

Experimental program
Comparison scheme
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Embodiment Construction

[0032] figure 1 A device 10 for determining a sensor offset of a sensor 12 is shown. In the illustrated embodiment, the device 10 is a steering system for a motor vehicle (not shown) having a first component 14, a second component 16, a reset element 18, a control unit 28, and an actuator. Actuator 30.

[0033] The first component 14 is an upper steering system 20 having a steering wheel 22 . The second component 16 is the lower steering system 24 . The upper steering system 20 is connected to the lower steering system 24 via the resetting element 18 .

[0034] In the exemplary embodiment described, the resetting element 18 is a torsion bar 26 via which the upper steering train 20 and the lower steering train 24 are connected in a torque-transmitting manner.

[0035] An actuator 30 is provided on the lower steering system 24 , which can move the lower steering system 24 .

[0036] Sensor 12 is a position sensor that monitors the position or rotation of torsion bar 26 and ...

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PUM

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Abstract

The invention discloses a method for determining a sensor offset of a sensor (12) in a device (10), in particular in a steering system for a motor vehicle. The device has a first component (14), a second component (16) which is movable with respect to the first component (14), a resetting element (18), an actuator (30) and a sensor (12) for determining the relative motion between the first component (14) and the second component (16). The method comprises the following steps: firstly, a predetermined relative motion between the first component (14) and the second component (16) is generated bythe actuator (30). The resulting relative motion is measured by means of the sensor (12), and the sensor data obtained from the measurement are stored. A constant sensor offset of the sensor (12) isthen determined on the basis of the stored sensor data. Furthermore, a device (10) is described whose sensor offset can be determined by means of the method.

Description

technical field [0001] The invention relates to a method for determining a sensor offset of a sensor in a device, in particular a steering system of a motor vehicle. Background technique [0002] A large number of different assistance systems are used in modern motor vehicles, such as electric steering assistance. These steering assistance systems require sensors to monitor the various components involved in the assistance system. It is therefore necessary, for example, to determine the position of a steering wheel in a motor vehicle so that a steering assistance system can intensify movements prescribed by the driver in a desired manner. [0003] Sensors are used to determine mechanical variables such as length, force, or torque. However, sensors often have a constant offset by design that can distort the measured variable. Therefore, in order to be able to achieve sufficient measurement accuracy, methods for offset correction are necessary. Contents of the invention ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01D18/00G01L25/00G01G23/01G01P21/00G01P21/02B62D15/02
CPCG01D18/008G01L25/003G01L25/00G01G23/01G01P21/00G01P21/02B62D15/021B62D5/0457B62D15/025G01P13/00B62D1/20B62D1/04
Inventor T·欧斯特尔温德
Owner ZF AUTOMOTIVE GERMANY GMBH
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