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Angle signal-free electric power steering alignment compensation control device

A technology of electric power steering and compensation control, which is applied in the direction of electric steering mechanism, etc., and can solve problems such as excessive return current, poor matching, driver panic, etc.

Inactive Publication Date: 2011-02-09
HANGZHOU ZHENGQIANG ELECTRONICS TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The steering force of the steering wheel, as well as the situation of returning to the center, can provide the driver with a kind of information feedback in terms of feel, indicating the adhesion between the tire and the ground. If the steering wheel is forcibly pulled back to a certain position through the motor, and the ground adhesion It does not match at all, resulting in a completely "false" back-to-center effect. When the back-to-center current is too large or the matching is not good, it may even cause a short-term slight loss of control of the vehicle, although this short-term slight loss of control will not bring Very serious consequences, but it does not work completely according to the driver's actual intention, and it will cause the driver to panic to a certain extent, or the evaluation will be lowered

Method used

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  • Angle signal-free electric power steering alignment compensation control device
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Embodiment Construction

[0012] like figure 1 As shown, an electric power steering return compensation control device without an angle signal includes a motor 2 connected to the output shaft 1 of the steering wheel steering system, and a controller 3 connected to the motor 2. The controller 3 includes a return compensation control A module 31 and a drive module 32 connected to the return compensation control module 31 . The return compensation control module 31 includes a return torque estimation module 311, a motor rotation angular velocity estimation module 312 connected with the motor 2, a motor rotation angular acceleration estimation module 313 connected with the motor rotation angular velocity estimation module 312, and the motor rotation angular velocity Both the estimating module 312 and the motor rotation angular acceleration estimating module 313 are connected to the aligning torque estimating module 311 . The righting torque estimation module 311 is connected with a steering wheel torque s...

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Abstract

The invention provides an angle signal-free electric power steering alignment compensation control device, which comprises a motor connected with an output shaft and a controller connected with the motor, wherein the controller comprises an alignment compensation control module and a drive module connected with the alignment compensation control module. The angle signal-free electric power steering alignment compensation control device can provide alignment compensation current and improve alignment.

Description

technical field [0001] The invention relates to an electric power steering return correction compensation control device without an angle signal. Background technique [0002] With the advantages of energy saving and fine control, electric power steering has been widely used in recent years. When implementing basic assist current to the motor and basic assist torque to the steering wheel to reduce the steering force of the steering wheel, it is generally necessary to implement the basic assist current at the same time. Various compensations outside to get better dynamic performance. One of the most important compensations is back-to-normal compensation. Due to the principle defect of electric power steering, its normalization performance is generally worse than that of hydraulic power steering. The biggest impact is the friction between the motor and the reduction mechanism, and the inertia of the motor rotor. Friction will reduce or even offset the tire's righting moment,...

Claims

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Application Information

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IPC IPC(8): B62D5/04
Inventor 许正庆
Owner HANGZHOU ZHENGQIANG ELECTRONICS TECH
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