Hybrid power steering system parameter matching method

Abstract

The invention discloses a hybrid power steering system parameter matching method, and belongs to the field of automobile steering systems. The hybrid power steering system parameter matching method isparticularly suitable for a novel steering system which simultaneously comprises an electric power assisting subsystem and a hydraulic power assisting subsystem. According to the hybrid power steering system parameter matching method, the effective stress area A of a hydraulic power assisting cylinder of the hydraulic power assisting subsystem, the hydraulic oil flow Q<s> of the hydraulic power assisting subsystem and the relative rotation angle alpha of a rotary valve core and a valve sleeve when a power assisting torque coupling device starts working are matched, so that the coupling ofan electric power assisting torque provided by the electric power assisting subsystem to a steering gear mechanical system in multiple ways is realized, and the problem that a novel steering system power assisting motor cannot output the maximum electromagnetic torque in the actual working process is solved. On the premise of ensuring steering portability, the hybrid power steering system parameter matching method reduces the hydraulic oil flow of the hydraulic power assisting subsystem in the novel steering system, so that the fuel economy of the novel steering system is improved.

Description

technical field [0001] The invention belongs to the field of automobile steering systems, and in particular relates to a parameter matching method of a hybrid power steering system. Background technique [0002] In order to overcome the defect that the hydraulic power steering system (HPS) used in commercial vehicles cannot perform active angle and torque control, a combination of hydraulic power steering system (HPS) and electric power steering system (EPS) has been proposed at home and abroad. Combined new steering system. [0003] In the currently disclosed new design of the steering system, the designers simply superimpose the power assist motor and deceleration mechanism in the electric power steering system on the traditional hydraulic power steering system, and in any steering condition, the electric power in the new steering system The booster motor cannot output its maximum electromagnetic torque. This causes redundancy in the power matching of the new steering sy...

AI Technical Summary

Problems solved by technology

[0002] In order to overcome the defect that the hydraulic power steering system (HPS) used in commercial vehicles cannot perform active angle and torque control, a combination of hydraulic power steering system (HPS) and electric power steering system (EPS) has been proposed at home and abroad. Combined new steering system

[0003] In the currently disclosed new design of the steering system, the designers simply superimpose the power assist motor and deceleration mechanism in the electric power steering system on the traditional hydraulic power steering system, and in any steering condition, the electric power in the new steering system The booster motor cannot output its maximum electromagnetic torque

This causes redundancy in the power matching of the new steering system, and also limits the maximum electromagnetic torque output of the power assist motor

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