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Sensor device and electric power steering apparatus using same

A sensor device and sensor technology, applied in electric steering mechanism, power steering mechanism, automatic steering control components, etc., can solve problems such as abnormal sensor data that is not mentioned

Active Publication Date: 2016-11-30
DENSO CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, Patent Document 1 does not mention the case where the sensor data is abnormal (that is, what happens when the sensor data has an abnormality)

Method used

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  • Sensor device and electric power steering apparatus using same
  • Sensor device and electric power steering apparatus using same
  • Sensor device and electric power steering apparatus using same

Examples

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no. 1 example

[0025] based on Figure 1 to Figure 8 A first embodiment of the present disclosure will be described.

[0026] Such as figure 1 and figure 2 As shown, the sensor device 1 is applied to an electric power steering apparatus 80 for, for example, assisting a steering operation of a vehicle, and the sensor device 1 has an electronic control unit (ECU, Electronic Control Unit) 85 as a controller and a main magnetic sensor 50 and a sub Magnetic sensor 60.

[0027] figure 1 A configuration of a steering system 90 provided with an electric power steering apparatus 80 is shown in .

[0028] A steering wheel 91 serving as a steering member is connected to a steering shaft 92 .

[0029] The steering shaft 92 has an input shaft 11 as a first shaft and an output shaft 12 as a second shaft. The input shaft 11 is connected to the steering wheel 91 . At a position between the input shaft 11 and the output shaft 12 , a torque sensor 10 that senses torque is arranged on a steering shaft ...

no. 2 example

[0189] based on Figure 9 to Figure 11 A second embodiment of the present disclosure will be described.

[0190] Such as Figure 9 As shown, the sensor device 2 of the present embodiment is provided with a main magnetic sensor 150, a sub magnetic sensor 160, an ECU 86 as a controller, and the like.

[0191] The ECU 86 controls the driving of the motor 81 based on the steering torque calculated based on the output signals Sd21 and Sd22 output from the magnetic sensors 150 and 160 . The ECU 86 differs from the ECU 85 in that the ECU 86 has a trigger signal generator 853 , except for a signal obtainer 851 , an abnormality determiner 855 , a cycle setter 856 , and a calculator 858 .

[0192] The trigger signal generator 853 generates a trigger signal Trg1 requesting transmission of the output signal Sd21. The trigger signal Trg1 is transmitted to the main sensor part 155 via the second terminal 512 of the first terminal group 51 , which serves as a communication terminal of the...

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Abstract

A sensor device includes a sensor (1) section having a plurality of sensor elements (55, 65) sensing a physical quantity regarding a magnetic flux collecting module (20), output circuits (555, 655) generating and outputting output signals (Sd11, Sd12) including data signals respectively corresponding to sensing values from the sensor elements, and an ECU (85) obtaining the output signal. The ECU (85) includes an abnormality determiner (855) identifying an abnormal sensor element. When at least two of the plurality of sensor sections respectively have at least one normal sensor element, a sub-sensor section (65) transmits the output signal (Sd11) therefrom to the ECU (85) at a shifted output timing from an output timing of the output signal (Sd12) from a main sensor section (55). The amount of such a shift of the output timing is shorter than one signal cycle of the output signal.

Description

technical field [0001] The present disclosure generally relates to a sensor device and an electric power steering apparatus using the sensor device. Background technique [0002] Typically, the sensor devices send sensor data to the controller. For example, in Japanese Patent Laid-Open No. 2013-546096 (Patent Document 1) listed below, transmission of sensor data is synchronized by using a trigger signal generated by a controller and received by a bidirectional node. [0003] In such a case, when the controller receives signal data from a plurality of sensors at the same timing, the update cycle of the data on the controller side is the same as the signal cycle. Therefore, the update cycle of data on the controller side cannot be shorter than the signal cycle. In addition, Patent Document 1 does not mention the case where the sensor data is abnormal (that is, the case that occurs when the sensor data has an abnormality). Contents of the invention [0004] In view of the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01L3/10G01L5/22G01L25/00G01R31/02B62D5/04B62D5/30
CPCB62D5/0481B62D5/30G01L3/101G01L5/221G01L25/003G01R31/50G01L3/104B62D5/0421B62D5/0442B62D5/049B62D6/10
Inventor 仓光修司林胜彦小泽崇晴中村功一泷雅也坂井利光
Owner DENSO CORP
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