Assisting power control device and method of electro-hydraulic composite steering system

A steering system, electro-hydraulic composite technology, applied in electric steering mechanism, steering mechanism, fluid steering mechanism, etc., can solve the problem of not fully providing the driver's driving road feeling, inconsistent steering feeling of the electro-hydraulic composite steering system, etc. Steering road feel consistency, the effect of eliminating lag

Active Publication Date: 2019-08-09
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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  • Abstract
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Problems solved by technology

[0005] Aiming at the deficiencies of the above-mentioned prior art, the object of the present invention is to provide a power assist control device and control method of an electro-hydraulic compound steering system, so as to solve the problem that the power assist steering system in the prior art cannot fully provide the driver with a satisfactory driving experience. And the problem of inconsistent steering feeling in the electro-hydraulic compound steering system

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  • Assisting power control device and method of electro-hydraulic composite steering system

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Embodiment Construction

[0045] In order to facilitate the understanding of those skilled in the art, the present invention will be further described below in conjunction with the embodiments and accompanying drawings, and the contents mentioned in the embodiments are not intended to limit the present invention.

[0046] refer to figure 1 As shown, a power assist control device of an electro-hydraulic compound steering system of the present invention includes: a driver's ideal torque calculation module, a power assist calculation module, a power assist distribution module, a power assist compensation module, a current control module, a current detection module, an electric power assist controller and electro-hydraulic booster controller.

[0047] The input end of the driver's ideal torque calculation module is connected to the sensor module; the driver's ideal torque is calculated according to the vehicle speed signal input by the sensor module, the steering wheel angle and torque signal and the later...

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Abstract

The invention discloses an assisting power control device and method of an electro-hydraulic composite steering system. Assisting power provided by the electro-hydraulic composite steering system is supplied by an electric assisting power module and an electric hydraulic assisting power module. The assisting power control device obtains driver ideal steering wheel torque by the adoption of a comprehensive road feeling intensity evaluation method combined with a steering wheel angle gradient and torque and according to a vehicle steering wheel angle, a torque signal, a vehicle speed signal anda vehicle lateral acceleration signal, the characteristic that an electric assisting power response is made accurately and quickly is used, the electric assisting power module provides an extra compensation moment for tracking, the problem existing in electro-hydraulic composite system steering road feeling consistency is solved, and the driver ideal steering road feeling requirement is met.

Description

technical field [0001] The invention belongs to the technical field of automobile power steering system control, and specifically refers to a power steering control device and a control method of an electro-hydraulic compound steering system. Background technique [0002] The power steering system is a key part to ensure the driving safety of the car. It can reduce the driver's manipulation force and improve the driving comfort. At present, the hydraulic power steering system used at home and abroad has the characteristics of large output torque, vibration attenuation, reliability and safety, etc., but it has the problem that the power assist cannot be adjusted with the speed, flutters at high speed, consumes a lot of energy, and has the problem of sluggish response of the power assist; The power steering system has the characteristics of quick response, adjustable power assist with speed, and better road feel. However, due to the limitation of electrical characteristics suc...

Claims

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Application Information

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IPC IPC(8): B62D5/04B62D5/06
CPCB62D5/0463B62D5/06
Inventor 郭志强赵万忠王春燕
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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