Power-assisted steering torque compensation method and system based on rotating angle information of steering wheel

A technology of torque compensation and power steering, which is applied to the driver's input parameters, control devices, transportation and packaging, etc., can solve the problems of increasing vehicle fuel consumption, torque waste, inaccurate torque compensation value, etc. cost effect
CN106515708AActive Publication Date: 2017-03-22VITESCO AUTOMOTIVE ELECTRONICS (CHANGCHUN) CO LTD
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Patent Information

Authority / Receiving Office
CN ยท China
Patent Type
Applications(China)
Current Assignee / Owner
VITESCO AUTOMOTIVE ELECTRONICS (CHANGCHUN) CO LTD
Publication Date
2017-03-22

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Abstract

The invention provides a power-assisted steering torque compensation method. The power-assisted steering torque compensation method comprises the following steps of detecting a rotating angle A and a rotating direction D of a steering wheel, and calculating out the angular speed Omega and the angular acceleration Sigma of the rotating of the steering wheel; according to the rotating direction D and the angular speed Omega, determining the basic torque compensation value Tq_bas required by an electronic hydraulic power-assisted steering system EHPS; according to the angular acceleration Sigma of the steering wheel, determining the amendment factor Factor of the basic torque compensation value Tq_bas; and according to the amendment factor Factor, amending the basic torque compensation value Tq_bas, and obtaining actual torque compensation value Tq_reserve. According to the power-assisted steering torque compensation method and system based on the rotating angle information of the steering wheel provided by the invention, accurate torque compensation value can be calculated through utilizing multi-direction and multi-type information of the steering wheel, and accurate calculation on a torque is realized at low cost, so as to reduce the consumption of automobile fuel.
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Description

technical field

[0001] The invention relates to the technical field of automotive electronic control, in particular to a power steering torque compensation method and system based on steering wheel angle information. Background technique

[0002] Automobile steering system has roughly gone through pure mechanical steering (MS, MechanicalSteering) and power steering (PS, Power Steering) without assistance. With the development of technology, the PS system is gradually developing from the traditional hydraulic power steering (HPS, Hydraulic Power Steering) system to the electric hydraulic power steering (EHPS, Electric Hydraulic Power Steering) system and electric power steering (EPS) system.

[0003] The electronic hydraulic power steering system EHPS has most of the advantages of mechanical hydraulic power, and at the same time reduces energy consumption, and the response is more sensitive. Choice of home models. The structure of the EHPS system mainly includes: power stee...

Claims

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