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Mixed type steering-by-wire system

A steer-by-wire and hybrid technology, which is applied to steering mechanisms, steering rods, electric steering mechanisms, etc., can solve problems such as poor road feel and complex control systems, and achieve the effect of improving reliability

Inactive Publication Date: 2017-03-22
BEIJING INSTITUTE OF TECHNOLOGYGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The function of the DAS steer-by-wire system is basically complete, but the control system is complex, and the road feel simulation and joint control with other systems are heavily dependent on the control algorithm. Users reported that the car "steering system is very smart, but the road feel is not good."

Method used

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  • Mixed type steering-by-wire system
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  • Mixed type steering-by-wire system

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Embodiment Construction

[0030] The present invention will be described in detail below with reference to the accompanying drawings and examples.

[0031] The present invention provides a hybrid steering-by-wire system, see attached figure 1 , including: steering wheel 1, input shaft angle sensor 2, road sensor motor 3, electronic control unit 4, clutch 5, steering drive mechanism 6, output shaft angle sensor 7, torque sensor 8, power steering motor 9, steering gear 10, input Shaft 11, intermediate shaft 12 and output shaft 13;

[0032] The electronic control unit 4 includes a road sense motor controller, a steering drive mechanism controller, and a power steering motor controller; the three controllers are connected by a FlexRay bus to improve communication speed and reliability, and are respectively equipped with CAN bus interface for bus communication;

[0033] One end of the input shaft 11 is provided with a connection structure for fixing with the steering wheel 1, the other end is processed wi...

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Abstract

The invention discloses a mixed type steering-by-wire system and belongs to the technical field of steering-by-wire. The mixed type steering-by-wire system comprises a steering wheel, a road sensing motor, a clutch, a steering drive mechanism, a steering assisting motor, a steering unit, an input shaft, an intermediate shaft and an output shaft, wherein one end of the input shaft is fixedly connected with the steering wheel; the other end of the input shaft is engaged with a first planet gear of the steering drive mechanism sequentially through the clutch and the intermediate shaft; a second planet gear of the steering drive mechanism is engaged with an output gear of one end of the output shaft; a gear of the other end of the output shaft is engaged with a rack of the steering unit; the input shaft, the intermediate shaft and the output shaft are coaxially connected with the steering drive mechanism through the clutch; a gear on an output shaft of the road sensing motor is engaged with a road sensing gear fixed to the middle of the input shaft; and a gear on an output shaft of the steering assisting motor is engaged with the rack of the steering unit. The steering wheel and a shift wheel of the system have a force transfer character and an angle transfer character which can be controlled in real time, and a mechanical steering state recovers automatically in case of a system failure.

Description

technical field [0001] The invention belongs to the technical field of steering-by-wire, and in particular relates to a hybrid steering-by-wire system. Background technique [0002] Intelligence is the direction of future automobile development. Steering by wire is the main solution for the intelligentization of the steering system. Steering by wire in the traditional sense originated from the Fly-By-Wire (wire-by-wire flight control technology) system used by NASA in spacecraft in the 1970s. At present, the Fly-By-Wire system has been widely used in jet fighters, Some civil aircraft, and ship control systems. [0003] Steering by wire in the traditional sense cancels the mechanical connection between the steering wheel and the steering wheel. It mainly consists of three main parts: the steering wheel module, the steering mechanism module and the electronic control unit. In order to ensure reliability, a large number of The concept of "redundant design", such as: sensor r...

Claims

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Application Information

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IPC IPC(8): B62D5/04B62D6/00
CPCB62D5/0421B62D5/043B62D5/046B62D5/0484B62D6/00
Inventor 杨林吴志成韩振杨王渊哲
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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