An electro-hydraulic coupling intelligent steering system and mode switching control method
A technology of intelligent steering and control methods, applied in electric steering mechanisms, steering mechanisms, mechanical steering gears, etc., can solve the problems of poor steering assist torque adjustment, small maximum assist torque, and inability to meet the needs of large vehicles for steering assist, etc. Market application prospects and the effect of control
Active Publication Date: 2021-07-27
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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Problems solved by technology
Among them, the hydraulic power steering system, the electronically controlled hydraulic power steering system, and the electrohydraulic power steering system can provide a large steering assist torque, but the steering assist torque is poorly adjustable with the vehicle speed
The electric power steering system can output the corresponding steering torque according to the vehicle speed, steering wheel torque, etc., and has the advantages of adjustable power assist with speed and good operation stability, but the maximum output torque is small, which cannot meet the steering requirements of large vehicles. Help demand
Method used
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[0047] Below in conjunction with accompanying drawing, technical scheme of the present invention is described in further detail:
[0048] 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.
[0049] refer to figure 1 As shown, the present invention discloses a mechanical transmission module, an electric power booster module, an electrohydraulic power booster module, a sensor module and a control module;
[0050] The sensor module includes a rotation angle sensor, a torque sensor, a vehicle speed sensor, a lateral acceleration sensor and a yaw rate sensor;
[0051] The torque sensor and the rotation angle sensor are both arranged on the steering shaft of the vehicle, and a...
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The invention discloses an electro-hydraulic coupling intelligent steering system and a mode switching control method. The system includes a mechanical transmission module, an electric booster module, an electrohydraulic booster module, a sensor module and a control module, and proposes a corresponding mode switching control method. In addition, the electro-hydraulic coupling steering system can switch between anti-stabilization, steering wheel power assist and steering wheel active return modes according to different states of the vehicle, so as to realize the control of vehicle safety and handling performance.
Description
technical field [0001] The invention relates to the technical field of power steering systems, in particular to an electro-hydraulic coupling intelligent steering system and a mode switching control method. Background technique [0002] Common power steering systems in existing vehicles include: hydraulic power steering systems, electronically controlled hydraulic power steering systems, electrohydraulic power steering systems, and electric power steering systems. Among them, the hydraulic power steering system, the electronically controlled hydraulic power steering system, and the electrohydraulic power steering system can provide relatively large steering assist torque, but the steering assist torque is poorly adjustable with vehicle speed. The electric power steering system can output the corresponding steering torque according to the vehicle speed, steering wheel torque, etc., and has the advantages of adjustable power assist with speed and good operation stability, but ...
Claims
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IPC IPC(8): B62D5/04B62D5/06B62D3/06
CPCB62D3/06B62D5/046B62D5/0466B62D5/0481B62D5/064
Inventor 赵万忠邹松春章波
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS