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Electric push rod power-assisted steering device

A power steering and electric push rod technology, which is applied in the direction of electric steering mechanism, automatic steering control parts, steering mechanism, etc., can solve the problems of poor environmental adaptability, small steering power, complex structure, etc., to improve steering performance and reduce noise , the effect of reducing environmental pollution

Pending Publication Date: 2019-05-24
SHIHEZI UNIVERSITY
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the power steering of vehicles is mainly divided into hydraulic type and electric type. Among them, the hydraulic power steering system mainly has problems such as high power consumption, complex structure, and poor environmental adaptability; the electric power steering system mainly relies on the motor as the driving force. Problems such as complex structure, high failure rate, and small power steering

Method used

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  • Electric push rod power-assisted steering device
  • Electric push rod power-assisted steering device
  • Electric push rod power-assisted steering device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0012] Such as figure 1 As shown, the steering controller determines the power supply voltage duty ratio D of the electromagnetic push rod according to the collected actual tensile stress Fm on the steering rod and the preset rod stress Fs (the stress is proportional to the torque of the steering wheel), and then according to The actual stress Fm acting on the steering rod and the preset stress Fs perform feedback tracking control on the duty cycle of the power supply voltage of the electromagnetic push rod.

[0013] Such as figure 2 As shown, the working principle of the electric push rod power steering device is: when the driver turns the steering wheel (1) and transmits it to the recirculating ball steering device (3) through the steering shaft (2), it passes through the steering rod (4), the steering rocker arm ( 6). The steering link (9) drives the front wheels to rotate, and a tensile and compressive stress sensor (5) is installed on the steering rod, and the tensile a...

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Abstract

The invention discloses an electric push rod power-assisted steering device which comprises a steering pull rod with a tension-compression stress sensor, an electric push rod and a power-assisted steering controller. The tension-compression stress sensor is mainly used for detecting the size and the direction of force applied to the steering pull rod and mounted in the middle of the steering pullrod in a threaded connection manner. One end of the electric push rod is mounted at the middle right end of a steering linkage rod, and the other end of the electric push rod is mounted at the middleleft end of a front axle in a single-rod offset manner. The power-assisted steering controller mainly comprises a 51 single chip microcomputer, a signal acquisition and processing circuit, an electricpush rod driving circuit, a monitoring circuit, a protecting circuit and the like and is used for controlling expansion of the electric push rod and accordingly realizing power-assisted steering according to acquired stress of the steering pull rod. Energy consumption can be effectively reduced, environmental pollution is reduced, the device can adapt to various running conditions, steering characteristics of a vehicle are improved, and the device has good low-temperature working performance.

Description

technical field [0001] The invention relates to the field of automobile steering assist systems, in particular to an electric steering assist device. Background technique [0002] With the proposal of electric new energy, electric four-wheel vehicles have been developed and applied rapidly. At present, the power steering of vehicles is mainly divided into hydraulic type and electric type. Among them, the hydraulic power steering system mainly has problems such as high power consumption, complex structure, and poor environmental adaptability; the electric power steering system mainly relies on the motor as the driving force. The structure is complex, the failure rate is high, and the power steering is small. Contents of the invention [0003] The purpose of the present invention is to solve the above problems, the present invention mainly provides an electric push rod type power steering device with simple structure, high efficiency and energy saving, and light steering; t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B62D5/04B62D6/00B62D137/00
Inventor 李景彬姚庆旺屈伸马朋勃孟令峰陈兴华温宝琴丁龙朋坎杂
Owner SHIHEZI UNIVERSITY
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