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Hybrid power steering system parameter matching method

A technology of steering system and hybrid power, which is applied in the direction of power steering mechanism, electric steering mechanism, steering mechanism, etc. It can solve the problem that the hydraulic power steering system cannot perform active angle and torque control, and the electric power assist motor cannot output the maximum electromagnetic torque. Limiting the maximum electromagnetic torque output of the booster motor, etc., to achieve the effect of ensuring the portability of steering, improving fuel economy and reducing waste loss

Active Publication Date: 2019-02-12
JIANGSU UNIV
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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

Method used

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Embodiment Construction

[0050] The present invention will be further described below in conjunction with the accompanying drawings, but the protection scope of the present invention is not limited thereto.

[0051] In the specific implementation, a commercial vehicle with a front axle load of 5.6 tons is taken as an example for system parameter matching, and a system parameter matching method for a hybrid power steering system is described.

[0052] The structure of the hybrid power steering system is shown as figure 2 As shown, it includes electric power assist subsystem, hydraulic power assist subsystem and recirculating ball mechanical subsystem. The hydraulic booster subsystem mainly includes hydraulic booster cylinders, rotary valves, torsion bars, hydraulic pipelines, hydraulic pumps, and booster torque coupling devices. The electric power assist subsystem mainly includes a power assist motor, a torque angle sensor and a reduction mechanism. The recirculating ball mechanical subsystem mainly...

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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...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B62D5/04B62D5/06
CPCB62D5/0463B62D5/06
Inventor 江浩斌尹晨辉唐斌朱宸
Owner JIANGSU UNIV
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