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Classification controller of multi-mode composite steering system and control method thereof

A steering system and mode classification technology, which is applied to automatic steering control components, steering mechanisms, steering rods, etc., can solve problems such as poor steering road feel and poor handling stability, and achieve improved torque control accuracy and broad market application prospects. Effect of improving steering economy and steering lightness

Active Publication Date: 2017-04-26
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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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 multi-mode composite steering system classification controller and its control method to solve the mode switching problem of the electromechanical-hydraulic coupling multi-working mode system. In the prior art, the steering The transmission ratio of the system is fixed, the hydraulic power steering system has poor steering feel under high-speed conditions, and poor handling stability, etc.

Method used

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  • Classification controller of multi-mode composite steering system and control method thereof
  • Classification controller of multi-mode composite steering system and control method thereof
  • Classification controller of multi-mode composite steering system and control method thereof

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Embodiment Construction

[0032] 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.

[0033] 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;

[0034]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 classification controller of a multi-mode composite steering system and a control method thereof. According to the classification controller of the multi-mode composite steering system and the control method thereof, a working condition feature extraction module is used for processing and analyzing signals input by a sensor module, a classification function is established, and the value of the classification function under the current working condition is calculated. A mode classifier I is used for classifying the steering modes of the steering system into a mode A, a mode B and a mode C; a mode classifier II is used for classifying the mode C into a mode D and a mode E; and a mode classification controller outputs control current to corresponding power module executing mechanisms for driving an electric power executing mechanism and a hydraulic power executing mechanism to output power, thereby realizing the multiple steering mode control function of the system and solving the problem of mode switching of an automotive multi-working mode mechanic-electric-hydraulic coupled power system.

Description

technical field [0001] The invention relates to the technical field of automobile power steering system control, and specifically refers to a multi-mode compound steering system classification controller and a control method thereof. Background technique [0002] At present, the hydraulic power steering system used in existing cars at home and abroad can provide greater power assistance under low-speed working conditions and reduce the burden on the driver when steering; but under high-speed working conditions, the steering feel is poor and there are problems with handling stability; The electric power steering system is composed of a controller, a power assist motor, a steering wheel torque sensor of a reduction mechanism, and a vehicle speed sensor. The controller receives and processes the steering wheel torque signal and vehicle speed signal measured by the sensor, and controls the motor to Characteristic output assist torque. However, affected by the electrical charact...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B62D6/00B62D101/00B62D113/00B62D119/00B62D137/00
CPCB62D6/008
Inventor 赵万忠栾众楷王春燕
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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