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Intelligent steer-by-wire system and variable transmission ratio optimization method

A technology of steering system and variable transmission ratio, applied in steering mechanism, steering rod, electric steering mechanism, etc., can solve problems such as reducing the burden on the driver and riding comfort.

Active Publication Date: 2020-05-01
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, in the prior art, the design of the variable transmission ratio of the steer-by-wire system is mainly to design the transmission ratio based on the constant gain of the fixed yaw rate, and the range of the gain value of the yaw rate is generally between 0.1 and 0.5. The gain value of pendulum angular velocity mainly depends on experience to select a fixed value, which has great randomness
Moreover, the steering-by-wire variable transmission ratio law designed with a fixed yaw rate gain value cannot reduce the burden on the driver to the greatest extent and improve the ride comfort of the occupants.

Method used

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  • Intelligent steer-by-wire system and variable transmission ratio optimization method
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  • Intelligent steer-by-wire system and variable transmission ratio optimization method

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Embodiment Construction

[0060] Below in conjunction with accompanying drawing, technical scheme of the present invention is described in further detail:

[0061] This invention may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art. In the drawings, components are exaggerated for clarity.

[0062] like figure 1 As shown, the present invention discloses an intelligent steer-by-wire system, which includes a steering wheel module, a road sense feedback module, a steering execution module, a sensor module and an ECU control module;

[0063] The steering wheel module includes a steering wheel and a steering column; the upper end of the steering column is fixedly connected to the steering wheel;

[0064] The road sense feedback module includes a road sense motor and a road se...

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Abstract

The invention discloses an intelligent steer-by-wire system and a variable transmission ratio optimization method. The steer-by-wire system comprises a steering wheel module, a road feel feedback module, a steering execution module, a sensor module and an ECU control module. The invention further provides a variable transmission ratio optimization method of the steer-by-wire system, so that the steering system can adjust the yaw angular velocity gain according to the vehicle speed and calculate the corresponding optimal transmission ratio so as to effectively improve the automobile control performance and reduce the driving burden of a driver.

Description

technical field [0001] The invention relates to the technical field of steering-by-wire systems, in particular to an intelligent steering-by-wire system and a variable transmission ratio optimization method. Background technique [0002] The steer-by-wire system is a new generation of steering system. Because the mechanical connection between the steering wheel and the steering wheel is canceled, the steering transmission ratio can be designed arbitrarily, so that the steering stability and ride comfort of the car have been effectively improved. [0003] However, in the prior art, the design of the variable transmission ratio of the steer-by-wire system is mainly to design the transmission ratio based on the constant gain of the yaw rate, and the range of the gain value of the yaw rate is generally between 0.1 and 0.5. The gain value of the pendulum angular velocity mainly relies on experience to select a fixed value, which has great randomness. Moreover, the steering-by-wi...

Claims

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Application Information

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IPC IPC(8): B62D5/04B62D6/00B62D101/00B62D113/00B62D137/00
CPCB62D5/046B62D6/001
Inventor 赵万忠邹松春黄云丰
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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