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Method and assembly for validity-checking and/or (RE)initialising rear wheel steering

A rear wheel steering device and reinitialization technology, which is applied to automatic steering control components, brake components, steering rods, etc., can solve the problems of non-executable reinitialization, absolute sensor failure, and increased manufacturing cost of rear wheel steering devices , to the effect of simple plausibility testing and/or reinitialization

Active Publication Date: 2020-01-10
ZF FRIEDRICHSHAFEN AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Here, the disadvantage is that in rear-wheel steering, the necessary redundant sensors must be installed for plausibility testing and / or reinitialization
Therefore, the manufacturing cost of the rear wheel steering device is increased thereby
Another disadvantage is that absolute sensors may fail and therefore reinitialization is not possible

Method used

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  • Method and assembly for validity-checking and/or (RE)initialising rear wheel steering
  • Method and assembly for validity-checking and/or (RE)initialising rear wheel steering
  • Method and assembly for validity-checking and/or (RE)initialising rear wheel steering

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Embodiment Construction

[0037] figure 1 schematically shows the Figure 7 or Figure 8 Component 1 for plausibility testing and / or reinitialization of rear wheel steering of vehicle 70 shown in . Assembly 1 comprises two vehicle units 2 , 10 . In this case, the first vehicle unit 2 is a rear wheel steering unit 3 . The rear wheel steering angle of at least one rear wheel of the vehicle can be adjusted by means of the rear wheel steering unit. The rear wheel steering unit 3 includes a rear wheel actuator 4 through which the steering angle of the rear wheels can be adjusted. The rear wheel steering unit 3 also includes a sensor 5 . The adjustment position of the rear wheel actuator 4 can be detected by means of the sensor 5 . In addition, the rear wheel steering unit 3 has a rear wheel controller 6 which can receive sensor signals (for example rotor position) transmitted via the sensor 5 and can actuate the rear wheel actuators 4 according to the sensor signals in order to adjust the desired re...

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Abstract

The invention relates to an assembly (1) for validity-checking and / or reinitialising rear wheel steering of a vehicle, having: a rear wheel steering unit (3) which has at least one rear wheel actuator(4) for setting a rear wheel steering angle and a sensor (5) for detecting the setting position of the rear wheel actuator (4); at least one reference sensor (12) for detecting a reference signal; and an electronic control device (6, 14) for carrying out the validity check and / or reinitialising the sensor (5). According to the invention, the reference sensor (12) is part of a different vehicle unit (10) from the rear wheel steering unit (3) and is designed to detect a reference signal (16) which is dependent of the vehicle state. Furthermore, the control device (6, 14) has at least one mathematical model (9) by means of which the vehicle-state-dependent reference signal (16) can be used to determine a reference value (17) and / or a reference vehicle state (18) with which the validity checkand / or reinitialisation can be carried out by the control device (6, 14).

Description

technical field [0001] The invention relates to a method and an assembly for plausibility testing and / or (re)initialization of a rear wheel steering device of a vehicle according to the type further defined in the preambles of the independent claims. Background technique [0002] Rear wheel steering devices for vehicles are known from the prior art, which have rear wheel actuators for adjusting the steering angle of the rear wheels. In order to detect the adjustment position of the rear wheel actuator, such a rear wheel steering device has sensors which can be arranged in the rear wheel actuator. In order to be able to check the proper functioning of the sensors, rear wheel steering devices known from the prior art additionally have absolute sensors. Such absolute sensors are therefore used to redundantly measure the rear wheel steering angle or displacement of the rear wheel actuator in order to check the prescribed functionality of the sensor in a plausibility test. Furt...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B62D15/02
CPCB62D15/021B62D15/024B62D15/0245B62D15/0235B62D7/159B60T2260/022B60W2420/52B62D6/002B62D6/02
Inventor H·艾勒斯U·比林D·福格特
Owner ZF FRIEDRICHSHAFEN AG
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