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Controller and control method based on multi-mode steering system auxiliary power coupler

A steering system and coupler technology, applied in steering mechanisms, electric steering mechanisms, power steering mechanisms, etc., can solve problems such as poor handling stability, achieve perfect integration, improve handling stability, and broad market application prospects.

Active Publication Date: 2017-02-22
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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  • Abstract
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Problems solved by technology

[0007] Aiming at the deficiencies of the above-mentioned prior art, the object of the present invention is to provide a controller based on a multi-mode steering system power coupler and its control method to solve the problem of response speed between different modules of the multi-actuator system in the prior art, And problems such as poor handling stability in high-speed working conditions of the hydraulic power assist system

Method used

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  • Controller and control method based on multi-mode steering system auxiliary power coupler
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  • Controller and control method based on multi-mode steering system auxiliary power coupler

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Embodiment Construction

[0029] 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.

[0030] refer to figure 1 As shown, a multi-mode active steering system includes: steering wheel 1, sensor module 2, steering column 3, planetary gear set 4, steering gear 7, electronic control unit (ECU) 12, steering rocker arm 17, servo motor C14 , electric push rod, first reduction mechanism 13, servo motor A6, second reduction mechanism 5, servo motor B10, hydraulic pump 9, oil storage tank 11, rotary valve 8, hydraulic booster cylinder 15 and booster coupler 16;

[0031]The steering wheel 1 is connected to the torque input end of the steering column 3, the sensor module 2 is placed between the steering wheel 1 and the steering column 3, and is connected to the electronic control unit (EC...

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Abstract

The invention discloses a controller and a control method based on a multi-mode steering system auxiliary power coupler. The multi-mode steering system auxiliary power coupler is allowed to couple and superpose the output auxiliary power torques of different actuators and output the coupled torques to a mechanical steering system. An electronic control unit is used for calculating the torque change rate of an auxiliary power coupling module, the overall energy consumption of a system and the system output auxiliary power tracking performance respectively. By taking the torque change rate of the auxiliary power coupling module as a control target and taking the overall energy consumption of the system and the auxiliary power tracking performance as constraint conditions, the torque change rate of the auxiliary power coupler is controlled, and such problems as relatively slow system output auxiliary power response rate and poor adjustability of power control characteristics of a hydraulic system in a mode switching process are solved.

Description

technical field [0001] The invention relates to the technical field of automobile power steering system control, and specifically refers to a controller and a control method based on a power coupler of a multi-mode steering system. Background technique [0002] The assist control algorithm for mode switching and its response speed are critical to the overall performance of the multi-mode steering system. At present, with regard to the multi-mode steering system, there is no relevant research on the mode switching technology between the power assist actuators. Nowadays, the relatively mature compound braking technology and hybrid technology have proposed corresponding mode switching methods to control their various modules to work together. Its mode switching strategy and the control algorithm of different modules working together in the composite mode have a high reference value for the design of the control method and controller design of the multi-mode steering system. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B62D5/04
CPCB62D5/0463
Inventor 赵万忠栾众楷王春燕
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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