Control method for steer-by-wire automobile active front-wheel steering control system

An active front wheel steering and control system technology, applied in the direction of automatic steering control components, steering mechanisms, steering rods, etc., can solve the problems of local minimum points, slow convergence speed of BP network control, etc., to ensure safety and improve vehicle performance. The effect of stability

Inactive Publication Date: 2017-05-17
LIAONING UNIVERSITY OF TECHNOLOGY
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Problems solved by technology

[0002] With the continuous development of automobile technology, people have higher and higher requirements for the safety performance of automobiles; the stability of automobiles in the steering process is an important indicator to determine the safety of automobiles. At present, the research on the control strategy of automobile steering s

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  • Control method for steer-by-wire automobile active front-wheel steering control system
  • Control method for steer-by-wire automobile active front-wheel steering control system
  • Control method for steer-by-wire automobile active front-wheel steering control system

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Embodiment Construction

[0024] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments, but the following embodiments in no way limit the present invention.

[0025] Such as figure 1 As shown in -4, the control method for the active front wheel steering control system of a steer-by-wire vehicle, the active front wheel steering control system of a steer-by-wire vehicle includes an active steering controller, a steering wheel, a vehicle front wheel steering actuator, CAN bus transceiver, one end of the CAN bus transceiver is connected to the active steering controller, and the other end is connected to the CAN bus of the car; the steering wheel is directly connected to the active steering controller; one end of the steering actuator of the front wheel of the car is connected to the steering mechanism of the car, and the other end One end is connected to the active steering controller; the control method for the active front wheel stee...

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Abstract

The invention discloses a control method for steer-by-wire automobile active front-wheel steering. The control method sequentially comprises the following steps that (1) a self-adaptive neural fuzzy inference model is built; (2) the initial weight value and the threshold value of the self-adaptive neural fuzzy inference model are optimized through the genetic algorithm; (3) the self-adaptive neural fuzzy inference model optimized through the genetic algorithm is applied to an active steering controller; (4) a full automobile model is built; (5) the steering wheel rotating angle and the actual automobile speed serve as input of the full automobile model, and the deviation of the ideal yaw velocity output by the full automobile model and the actual automobile yaw velocity serves as input of the active steering controller; (6) the active steering controller outputs the additional front wheel rotating angle; and (7) the additional front wheel rotating angle and the steering wheel rotating angle are overlapped and fed back to an automobile steering actuator. By means of the control method for a steer-by-wire automobile active front-wheel steering control system, the automobile stability during automobile steering is improved, and the safety of a driver in the automobile running process is ensured.

Description

technical field [0001] The invention belongs to the technical field of automobile active front wheel control, in particular to a control method for an active front wheel steering control system of a steer-by-wire automobile. Background technique [0002] With the continuous development of automobile technology, people have higher and higher requirements for the safety performance of automobiles; the stability of automobiles in the steering process is an important indicator to determine the safety of automobiles. At present, the research on the control strategy of automobile steering stability mainly includes PID control, fuzzy control, BP network control, etc.; PID control and fuzzy control are difficult to make automatic adjustments with changes in vehicle conditions; at the same time, the convergence speed of BP network control is slow, and it is easy to make the solution of the problem fall into a local minimum point . Contents of the invention [0003] The object of t...

Claims

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Application Information

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IPC IPC(8): B62D6/00B62D113/00B62D101/00
CPCB62D6/001B62D6/003
Inventor 霍春宝刘春玲程艳门文光
Owner LIAONING UNIVERSITY OF TECHNOLOGY
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