Supercharge Your Innovation With Domain-Expert AI Agents!

Characteristic change detection device for steering transmission system

A change detection and transmission system technology, applied to steering mechanisms, steering rods, electric steering mechanisms, etc., can solve problems such as changes in steering control feeling, inability to maintain the linear characteristics of steering wheel angle and tire angle, and reduced accuracy of vehicle state quantity estimation

Active Publication Date: 2015-02-11
TOYOTA JIDOSHA KK
View PDF8 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the transmission characteristics such as gaps in the steering transmission system are changed due to aging and deterioration of the above-mentioned elastic members, the linearity between the steering wheel angle and the tire angle cannot be maintained, resulting in a change in the steering feel or a change based on the steering wheel angle information. Problems such as reduced accuracy of inference of vehicle state quantities

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Characteristic change detection device for steering transmission system
  • Characteristic change detection device for steering transmission system
  • Characteristic change detection device for steering transmission system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0021] figure 1 A schematic configuration of a vehicle 10 including a characteristic change detection device of a steering transmission system according to a first embodiment of the present invention is shown. figure 1 is a schematic diagram of the front wheel portion of a four-wheeled vehicle. The traveling direction of the vehicle is changed by steering the right front wheel FR and the left front wheel FL as steered wheels.

[0022] The vehicle 10 includes an electric power steering device (hereinafter referred to as "EPS"). The EPS includes: a steering wheel 12 steered by the driver; a steering shaft 14 connected to the steering wheel; a reduction mechanism 44 provided at the lower end of the steering shaft; and a steering assist motor 24 whose output shaft is connected to the reduction mechanism 44. . The steering assist motor 24 applies an assist force for assisting a steering operation by driving the steering shaft 14 to rotate.

[0023] A torsion bar (not shown), a ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

A steering angle zero point detection unit (102) detects the zero point of the steering angle of a steering wheel. A zero point history retention unit (104) records the detection history of the zero point. A characteristic change determination unit (116) determines whether the characteristics of the steering transmission system have changed on the basis of the width of the zero point detection history.

Description

technical field [0001] The present invention relates to techniques for detecting characteristic changes in steering maneuver delivery systems. Background technique [0002] In vehicle behavior control technologies such as vehicle stability control (VSC: Vehicle Stability Control), various controls are performed using detection values ​​of a steering wheel angle sensor mounted on a steering wheel. In the case of using a steering wheel angle sensor of a type that outputs a relative angle, the zero point of the steering wheel angle sensor is first detected, and the steering absolute angle is calculated based on the detected zero point. Therefore, it is important to detect the zero point of the steering wheel angle with high precision. For example, Patent Document 1 discloses a technique for detecting a steering wheel angle zero point based on a difference between an estimated yaw rate estimated from a detection value of a steering wheel angle sensor and an actual yaw rate dete...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): B62D6/00B62D5/04
CPCB62D15/0245
Inventor 狩野岳史山田芳久渡部良知
Owner TOYOTA JIDOSHA KK
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com