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Angle signal-based electric power steering control method

An electric power steering and angle signal technology, which is applied to automatic steering control components, electric steering mechanisms, steering mechanisms, etc., can solve the problem of uneven torque of the steering wheel, and achieve the effect of uniform torque and good operation feeling.

Inactive Publication Date: 2011-02-02
HANGZHOU ZHENGQIANG ELECTRONICS TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide an electric power steering control method based on an angle signal, which can solve the phenomenon that the steering wheel torque of the vehicle is different at different steering angles, so that the torque at different angles is uniform and the operation feeling is better.

Method used

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  • Angle signal-based electric power steering control method

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Embodiment Construction

[0013] like figure 1 As shown, an electric power steering control method based on an angle signal, on the basis of the basic assist motor current applied by the existing electric power steering based on the two parameters of torque and vehicle speed, the angle is used as the third parameter of the basic assist current , so that the basic assist current changes with the change of torque, vehicle speed and angle. After increasing its angle dependence, the basic boost current depends on the three parameters of torque, vehicle speed and angle. The basic assist current lookup table is changed from the original two-dimensional matrix of torque and vehicle speed to the three-dimensional matrix of torque, vehicle speed and angle. The total motor assist current varies greatly with different angles. The external characteristics of the electric power steering controller have obvious changes, and the function curve of the fixed output torque and the measurement of the input shaft torque...

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Abstract

The invention provides an angle signal-based electric power steering control method. On the basis that basic assisted motor current applied during the conventional electric power steering is based on torque and speed, angle is used as a third parameter of the basic assisted current to ensure that the basic assisted current changes along with changes of the torque, the speed and the angle. The method can solve the problem that a vehicle has different torques of the steering wheel under different steering angles, so the torques at different angles are uniform, and the operation sense becomes better.

Description

technical field [0001] The invention relates to an electric power steering control method based on an angle signal. Background technique [0002] As we all know, when the vehicle is turning, the tie rod of the steering machine pushes and pulls the steering knuckle arm, causing the tires to rotate and changing the driving direction of the car. But this kind of push-pull force is a pure triangle relationship. When the steering knuckle arm turns to different positions, or different angles, the length of the resistance arm is changing. That is to say, even if the steering friction torque between the tire and the road surface is not When the resistance arm changes, the resistance changes. This just causes almost all vehicles, and when the steering wheel turns to different angles, the push-pull force of tie rod changes greatly. Especially when turning on the spot, when many vehicle tires are turned to the maximum angle position, this force is several times that of the tire in th...

Claims

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Application Information

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IPC IPC(8): B62D6/00B62D119/00B62D113/00B62D101/00B62D5/04
Inventor 许正庆
Owner HANGZHOU ZHENGQIANG ELECTRONICS TECH
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