Automotive self-adaptive intelligent steering system

Abstract

The invention discloses an automotive self-adaptive intelligent steering system, which comprises steering control center ECU, a steering wheel and pressure sensing device, a steering module device, an ESP actuating unit and a variable transmission ratio actuating unit, and is characterized in that: when steering operation is performed, the steering control center ECU extracts a yaw velocity signal, a steering wheel rotation angle signal and a vehicle speed signal to perform calculation to determine an angular transmission ratio. The system of the invention can perform comfortable steering, intelligent steering, moving steering and automatic steering selectively; the new self-adaptive steering system is established by integrating various new technical elements; a new theoretical research basis and a new reference direction are provided for the research of new technical schemes satisfying humanization needs in the field; and meanwhile, the system can be used as a unit body for integrated development of chassis to realize different driving styles by cooperating with other systems. Therefore, further upgrade and functional expansion can be made.

Description

technical field [0001] The invention belongs to the field of auto parts, in particular to an auto adaptive intelligent steering system. Background technique [0002] The existing active steering system generally adopts the control of electric variable power assist (referred to as EPS) to achieve better handling performance. For example, in the patent application CN200510030562.1, an electric power steering system with integrated active steering function is disclosed. , its main structure is: the electronic control unit processes the input signals of the steering wheel torque sensor, vehicle speed sensor, steering wheel angle sensor, and yaw rate sensor, and implements a robust stability control module in the control system to finally control A permanent magnet DC motor implements active steering. Since the active steering is limited to the change of the steering force with the vehicle speed, it only controls the steering force, and the steering feeling cannot be solved as e...

AI Technical Summary

Problems solved by technology

Since the active steering is limited to the change of the steering force with the vehicle speed, it only controls the steering force, and the steering feeling cannot be solved as expected (fast steering at low speed and stable steering at high speed), and at the same time, when the load is transferred (such as emergency braking In the case of moving, rapid acceleration, changes in body power, etc.), there is no corresponding change in power assist characteristics, so the steering force cannot be well distributed to meet the driver's expectations, and it is not suitable for drivers of different genders, ages and physical conditions. The adaptive change of the input torque, or the corresponding selection mode, that is, the self-adjustment of the steering input hand force cannot be performed according to the driver's situation, and the function of adaptive intelligent steering can be realized, which cannot fully meet the driver's wishes

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