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Active steering road feel control system and method based on magnetorheological fluid

A technology of active steering and magneto-rheological fluid, which is applied in the direction of power steering mechanism, fluid steering mechanism, steering mechanism, etc., can solve the problems that the steering by wire cannot be commercialized, and the road feeling of the steering system cannot be improved, so as to eliminate adverse effects, Good cushioning and energy absorption effect, continuous viscosity change effect

Pending Publication Date: 2018-11-02
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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Problems solved by technology

The steer-by-wire simulated road feel device proposed in the above patents is only used for the steer-by-wire system without mechanical connection. It is a simulated road feel from scratch, and cannot improve the road feel of the existing steering system.
At the same time, under the current regulations, the steer-by-wire has not yet been commercialized and entered the stage of actual vehicle assembly. The existing steering system is still the mainstream for a long time. At present, magnetorheological fluid has not been applied to it to control the steering feel. The instance presented

Method used

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  • Active steering road feel control system and method based on magnetorheological fluid
  • Active steering road feel control system and method based on magnetorheological fluid
  • Active steering road feel control system and method based on magnetorheological fluid

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Embodiment Construction

[0042] 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.

[0043] refer to figure 1 As shown, a magneto-rheological fluid-based active steering road feel control system of the present invention includes: a mechanical transmission module, an active steering module, a road feel adjustment module and a control module;

[0044] The mechanical transmission module includes a steering wheel 1, a steering shaft 3, a recirculating ball steering gear 9, a steering rocker arm 10, a ball stud 11, a steering trapezoid 12 and wheels 13;

[0045] The upper end of the steering shaft 3 is connected to the steering wheel 1, and the lower end is connected to the input end of the recirculating ball steering device 9; the output end of the recirculating ball steering de...

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Abstract

The invention discloses an active steering road feel control system and method based on magnetorheological fluid. The system comprises a mechanical transmission module, a road feel adjusting module, an active steering module and a control module. The road feel adjusting module adjusts the intensity of a magnetic field through a magnet exciting coil, the mechanical property of the magnetorheological fluid is changed, and thus, road feel is adjusted; and for the road feel control system, a road feel control method is provided, perfect steering wheel reactive force is calculated and applied, adverse effects of road feel change during intervention on active steering at different automobile speeds are eliminated, thus, a driver can obtain suitable steering road feel, and by matched fuzzy PI self-adjusting control, the disturbance resistance of the system is improved.

Description

technical field [0001] The invention belongs to the technical field of automobile steering systems, and specifically refers to a magneto-rheological fluid-based active steering sense control system and a control method thereof. Background technique [0002] Steering road feel is the road surface feedback information that the driver feels through the steering wheel while the vehicle is running, which affects the driver's operating feel and driving safety. Compared with electric power steering system and hydraulic power steering system, automobile active steering system has changed the torque transmission characteristics and displacement transmission characteristics at the same time, and the steering feel characteristics have also changed. In order to give the driver a better road feel, the existing active steering road feel control systems mostly use motors and reduction mechanisms as actuators, which can provide the driver with a suitable road feel during active steering int...

Claims

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Application Information

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IPC IPC(8): B62D5/00B62D5/06
CPCB62D5/006B62D5/064
Inventor 周小川赵万忠赵宏宇
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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