Construction method and device of vehicle power-assisted steering model

A technology of steering assist and construction method, which is applied in the field of vehicle steering assist model construction, can solve problems such as difficult to realize, and achieve the effect of improving versatility

Pending Publication Date: 2022-06-03
CHINA AUTOMOTIVE INNOVATION CORP
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  • Abstract
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  • Application Information

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Problems solved by technology

[0004] The invention provides a method and device for constructing a vehicle steering assist model, which solves the problem that it is difficult to realize the quantitative description of the nonlinear mapping relationship between the input voltage signal and the output torque limit signal under the double-slope hysteresis control algorithm

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  • Construction method and device of vehicle power-assisted steering model
  • Construction method and device of vehicle power-assisted steering model
  • Construction method and device of vehicle power-assisted steering model

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Embodiment Construction

[0037] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0038] Hereinafter, the terms "first" and "second" are only used for descriptive purposes, and should not be construed as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Thus, a feature defined as "first" or "second" may expressly or implicitly include one or more of that feature. In the description of the embodiments of the present disclosure, unless otherwise specified...

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Abstract

The invention discloses a construction method and device of a vehicle power-assisted steering model, and relates to the technical field of automatic driving. According to the specific scheme, the method comprises the steps that a computer device obtains a mapping relation corresponding to each mapping mode in multiple mapping modes, each mapping relation is the relation between a power supply voltage signal of a motor of the vehicle and a power-assisted torque limiting value signal, and the multiple mapping relations are obtained through a double-slope hysteresis control algorithm; the method comprises the following steps: acquiring a plurality of mapping modes, acquiring a plurality of switching conditions existing in the plurality of mapping modes, establishing a vehicle power-assisted steering model according to a mapping relation corresponding to each mapping mode and the plurality of switching conditions, and establishing a library module according to the vehicle power-assisted steering model. According to the method, quantitative description of the complex nonlinear relation between the power supply voltage signal and the power-assisted torque limit value signal of the motor of the vehicle can be accurately and efficiently realized under a double-slope hysteresis control algorithm, and the universality of a vehicle power-assisted steering model is improved.

Description

technical field [0001] The invention relates to the technical field of automatic driving, in particular to a method and device for constructing a steering assist model of a vehicle. Background technique [0002] The dual-slope hysteresis control algorithm is a complex nonlinear control algorithm. This algorithm can not only effectively suppress the high-frequency oscillation of the output signal, but also avoid the discontinuity of the output signal caused by the step hysteresis, so the algorithm can be applied In some fields that require high performance of output signals, for example, the control field of electric power-assisted vehicle steering. [0003] In the control field of electric power-assisted vehicle steering, a dual-slope hysteresis control algorithm can be used to establish a nonlinear mapping relationship between the input voltage signal and the output torque limit signal. However, since the dual-slope hysteresis control algorithm is difficult to quantitative...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05B13/04
CPCG05B13/042
Inventor 李卫东邓念程燃肖辰
Owner CHINA AUTOMOTIVE INNOVATION CORP
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