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Filtering Method for Detecting Transitions of Power Steering Signals

A power steering, filter technology, applied in steering mechanisms, measuring forces applied to control elements, instruments, etc., to solve problems such as distortion, false positives, etc.

Active Publication Date: 2019-10-22
JTEKT EURO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] Then, it is understood that random variations in the signal, introduced by noise, can sometimes distort this perception, for example due to accidental crossing of thresholds, leading to "false positives"

Method used

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  • Filtering Method for Detecting Transitions of Power Steering Signals
  • Filtering Method for Detecting Transitions of Power Steering Signals
  • Filtering Method for Detecting Transitions of Power Steering Signals

Examples

Experimental program
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Embodiment Construction

[0022] The invention relates to a method of managing a power steering system 1 .

[0023] The power steering system 1 includes at least one output assist force C 辅助 Auxiliary motor 2.

[0024] It does not matter to use any type of auxiliary motor 2 , more particularly any type of bi-directional auxiliary motor.

[0025] In particular, the present invention can also be applied to a rotation assist motor 2 for applying a torque-type assist force C 辅助 , and applied to the linear assist motor 2 for applying traction or compression assist force C 辅助 .

[0026] Furthermore, said auxiliary motor 2 may be for example hydraulic or preferably electric (the use of an electric motor makes implanting and actuating said motor very easy, as well as generating and managing useful signals).

[0027] In a particularly preferred manner, the auxiliary motor 2 is a rotary electric motor, for example of the “brushless” type.

[0028] Furthermore, the power steering system 1 preferably, in a ma...

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Abstract

The invention relates to a method for detecting transitions (4') in a noise signal which involves submitting a noise signal (δ 信号 ), the method includes a derivation sub-step (a1), the derivation sub-step (a1) comprising an evaluation of the time derivative of the noise signal (δ 信号 / δ t ), followed by a selective filtering sub-step (a2), which includes taking the time derivative of the noise signal (δ 信号 / δ t ) with a predetermined change threshold (S 峰值 ) comparison to detect greater than the change threshold (S 峰值 ) of the derivative peak (7), the duration of the hold of said derivative peak (d 峰值 ), the time derivative of the noise signal (δ 信号 / δ t ) remains greater than the change threshold (S 峰值 ), check the peak hold duration (d 峰值 ) meets or exceeds a predetermined minimum time threshold (d 0 ).

Description

technical field [0001] The invention relates to the general field of methods for managing power steering systems of equipped vehicles, in particular motor vehicles. Background technique [0002] In particular, the invention relates to the processing of signals, such as the measurement of the torque signal output by the steering assist motor, which is a representative operating parameter of the power steering system, the identification and analysis of which torque signal is performed on said power steering system Necessary for good management. [0003] Signals used to manage power steering are susceptible to noise, especially measurements taken from sensors such as those measuring motor torque or the torque the driver is applying to the steering wheel. [0004] Noise degrades the quality of a signal by superimposing random fluctuations, which may be fast and of large magnitude, on the signal carrying useful information. [0005] However, managing the power steering system, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06K9/00B62D15/02B60W50/00G01L5/22
CPCB60W50/00B62D15/02G01L5/221B60W2050/0052B60W2050/0059G06F2218/04B62D5/0481B62D5/0463
Inventor 塞巴斯蒂安·布尔德雷帕斯卡·莫莱尔克里斯多夫·瑞维尔
Owner JTEKT EURO