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A sensor assembly dynamic calibration system for steering system

A technology of dynamic calibration and steering system, applied in the field of steering system, can solve problems such as power steering system mismatching steering assist, affecting vehicle handling performance, abnormal steering feel, etc., to achieve the effect of improving performance

Inactive Publication Date: 2016-06-01
BOSCH HUAYU STEERING SYST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Then, if the sensor assembly is directly applied by simply assembling the parts, the errors of each component will accumulate, and the final output characteristics will seriously deviate from the driver's actual operation, causing the power steering system to provide unmatched steering assistance. Abnormal hand feeling will affect the handling performance of the vehicle; if it is serious, the steering performance will affect the driving of the vehicle and cause serious accidents

Method used

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  • A sensor assembly dynamic calibration system for steering system
  • A sensor assembly dynamic calibration system for steering system
  • A sensor assembly dynamic calibration system for steering system

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Experimental program
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Embodiment Construction

[0048] The present invention will be further described below according to the accompanying drawings.

[0049] The calibration process of the sensor assembly needs to compare and calculate the output value of the sensor assembly with the actual torsional torque, and based on the comparison and calculation of the characteristic difference between the two, modify the parameters of the sensor assembly to complete the output performance calibration of the sensor assembly.

[0050] The specific mathematical model is as follows:

[0051] The deformation and torque of the sensor assembly conform to the following rules:

[0052] T 1 =G×δ

[0053] Among them, T 1 is the mechanical torsional torque, G is the torsional stiffness, and δ is the amount of torsional deformation.

[0054] The signal output of the sensor assembly and the amount of torsional deformation conform to the following rules:

[0055] f(δ)=b 0 +b 1 δ+b 2 δ 2 +......+b n δ n

[0056] f(δ) is the sensor output...

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Abstract

The invention relates to the technical field of steering systems, in particular to a sensor assembly dynamic calibration system for a steering system. The sensor assembly dynamic calibration system for the steering system comprises a torque sensor, an angle encoder, a sensor assembly, an NI data acquisition card, a signal acquisition card, a power module, a digital quantity programmer, an analog quantity programmer and an industrial personal computer. Compared with the prior art, the calibration system and method used under the dynamic working state are provided, the purpose of large-scale high-accuracy high-percent-of-pass calibration of the sensor assembly of the electric power-assisting steering system is achieved, and the performance of the sensor assembly is greatly improved.

Description

technical field [0001] The invention relates to the technical field of steering systems, in particular to a sensor assembly dynamic calibration system for steering systems. Background technique [0002] Different from mechanical steering, hydraulic power steering and electro-hydraulic power steering of traditional automobiles, electric power steering, which has been widely used in recent years, has many advantages such as accurate power response, flexible and adjustable power performance, and low energy consumption. Especially under the background that the country vigorously promotes the new energy high-tech automobile industry and implements the energy-saving and emission-reduction policy of the automobile industry, the electric power steering system has been favored by many vehicle OEMs and consumers. At present, most of the domestic mid-to-high-end models and above have been equipped with this technology, and the new A-class and B-class passenger cars are also gradually s...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01L25/00
Inventor 王凯包隽蒋京林李小飞胡卫骅
Owner BOSCH HUAYU STEERING SYST CO LTD