A method for matching parameters of a hybrid power steering system

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

Active Publication Date: 2021-05-25
JIANGSU UNIV
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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

Method used

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  • A method for matching parameters of a hybrid power steering system
  • A method for matching parameters of a hybrid power steering system
  • A method for matching parameters of a hybrid power steering system

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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 parameter matching method of a hybrid power steering system, belongs to the field of automobile steering systems, and is particularly suitable for a new type of steering system including an electric power assist subsystem and a hydraulic power assist subsystem. In the present invention, the effective force-bearing area A of the hydraulic booster cylinder of the hydraulic booster subsystem by matching the system parameters p , Hydraulic oil flow Q of the hydraulic booster subsystem s And the relative rotation angle α of the rotary valve spool and the valve sleeve when the power-assisted torque coupling device starts to work, realizes the multi-channel coupling of the electric power-assisted torque provided by the electric power-assisted subsystem to the steering gear mechanical system, and solves the problem of the actual working process of the power-assisted motor of the new steering system. The problem that the maximum electromagnetic torque cannot be output. On the premise of ensuring the portability of steering, the invention reduces the hydraulic oil flow rate of the hydraulic power assist sub-system in the new steering system, thereby improving the fuel economy of the new steering system.

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 Patents(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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