Supercharge Your Innovation With Domain-Expert AI Agents!

Electric Steering Control

A technology of electric steering and control devices, which is applied to electric steering mechanisms, power steering mechanisms, steering mechanisms, etc., and can solve problems such as sensor noise

Active Publication Date: 2018-03-06
DENSO CORP
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In the device of JP-A-2013-126822, the detection value of the actual motor current by the current sensor well reflects the actual motor output, but may include high-frequency components such as sensor noise
Therefore, when estimating the steering force to be applied to the steering shaft based on the detection value of the current sensor, there is a problem of reliability in performing calculation using an estimated value including high-frequency components, which calculation is the assist control of the electric power steering system. Base

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
  • Electric Steering Control
  • Electric Steering Control
  • Electric Steering Control

Examples

Experimental program
Comparison scheme
Effect test

no. 1 example

[0022] refer to Figure 1 to Figure 6 , the electric steering control device according to the first embodiment of the present disclosure will be described. The electric steering control device is a device that controls assist torque output by an electric motor in an electric steering system for a vehicle and is configured as, for example, an ECU (electronic control unit).

[0023] like figure 1 As shown, the electric steering control device 101 according to the first embodiment is applied to the electric steering system 1 of column assist type, which assists the rotation of the column shaft 32 by the assist torque of the electric motor 5 . The electric steering system 1 includes a steering wheel 2 , a steering shaft 31 , a column shaft 32 , an intermediate shaft 33 , a torsion bar 4 , a motor 5 , a worm wheel 6 , a turning device 7 , a torque sensor 40 and a motor rotation angle sensor 50 .

[0024] A steering wheel 2 operated by a driver is coupled to one end of a steering ...

no. 2 example

[0095] refer to Figure 7 , an electric steering control device according to a second embodiment will be described. In the description of the following embodiments, basically the same configurations as those of the above embodiments are denoted by the same symbols, and repeated descriptions will be omitted.

[0096] The electric power steering control device 102 according to the second embodiment includes a multiplier 43 which calculates the product of the steering torque Ts obtained from the torque sensor 40 and the steering angular velocity ωs obtained from the steering angular velocity calculation unit 52 by the product of the steering torque Ts and the steering angular velocity ωs. It is not obtained from the steering state change determination unit 42 of the first embodiment. Since the value of the product changes when at least one of the steering torque Ts and the steering angular velocity ωs changes, a change in the steering state can be found.

[0097] The steering s...

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

An electric steering control device for controlling auxiliary torque output by a motor (5), comprising: a steering wheel (2) of a vehicle; a torsion bar (4) between the steering wheel and a column shaft (32); a torque sensor (40) , which detects the steering torque; the rotating device (7), which converts the rotational motion of the column shaft into the reciprocating motion of the rack which rotates the vehicle wheel; the electric motor (5); the motor rotation angle sensor (50), which detects the rotation angle of the motor a steering shaft load estimating unit (41) that estimates a steering shaft load; and a basic assist control unit (44) that calculates a basic assist torque command value. The steering shaft load estimating unit estimates the steering shaft load based on previous values ​​of the steering torque, the steering angular velocity or the steering angular acceleration and the basic assist torque command value.

Description

technical field [0001] The present disclosure relates to an electric steering control device. Background technique [0002] Heretofore, in an electric power steering system of a vehicle, there has been known a control device that controls an assist torque output by an electric motor based on information such as steering torque. [0003] For example, the device disclosed in JP-A-2013-126822 is based on a detection value of a torque sensor that detects steering torque, a detection value of a current sensor that detects a real-time current flowing in a motor, and a motor rotation angle sensor that detects a rotation angular velocity of the motor. The detected value is used to estimate the axial force that will be applied to the steering shaft. The estimated axial force is input to the motor control signal output unit, and a target assist value is changed based on a result determined using the estimated axial force to improve steering experience. [0004] In the device of JP-A...

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 Patents(China)
IPC IPC(8): B62D5/04
CPCB62D5/0463G06F17/11B62D5/0481
Inventor 仓光修司
Owner DENSO CORP
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