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Differential power assisted steering system for independent driving motor using deflecting roller

A technology of power steering and independent drive, applied in the direction of electric steering mechanism, etc., can solve the problems of complex structure, steering system inertia and increased loading cost, etc., and achieve the effect of simple structure and low cost

Inactive Publication Date: 2008-10-22
JILIN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to overcome the existing problems of the steering system inertia and the increase of the loading cost and the complicated structure of the existing technology, and to provide a differential power steering system for independently driving the electric vehicle with the steering wheel

Method used

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  • Differential power assisted steering system for independent driving motor using deflecting roller
  • Differential power assisted steering system for independent driving motor using deflecting roller
  • Differential power assisted steering system for independent driving motor using deflecting roller

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Embodiment Construction

[0039] The present invention is described in detail below in conjunction with accompanying drawing:

[0040] refer to figure 1 To Fig. 7, the left and right steered wheel drive shafts of traditional car are owing to be connected by mechanical differential. Due to the existence of the kingpin offset, the longitudinal force on the tire footprint will generate a moment around the kingpin. Generally, the torque around the kingpin generated by the driving force of the left and right steering wheels on a good road is roughly equal in size and opposite in direction. Therefore, in the steering trapezoid cancel each other out. For electric vehicles driven independently by the steering wheels, since the left and right steering wheels are driven by independent wheel side motors, the driving force of each wheel can be controlled independently, and the driving torque generated by the wheel side motors is fast and accurate. The driving force of the wheels can be unequal, then the moment o...

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Abstract

The invention discloses a differential power steering system used for driving electric vehicle independently by a steering wheel, which aims at overcoming the existing problems of inertia of the steering system and increasing of loading cost in the prior art. A whole vehicle controller (2) is added to the technical proposal of the invention. The differential power steering system of the invention comprises a processor, a pulse input interface circuit, a CAN communication interface circuit 1, an analog input interface circuit 1 and an analog input interface circuit (2), etc. The pins of DI5, DI6, DI7 and DI8 are connected with the wheel-speed sensor (14) by a wire; the pins of CAN2_H and CAN2_L are connected with a wheel-edge motor controller (4) of a right steering wheel by a wire; the pins of CAN1_H and CAN1_L are connected with the wheel-edge motor controller (3) of a left steering wheel by a wire; a power supply interface is connected with a power supply of 12V to 24V; the pins of AI0 and AI1 are connected with a torque in the torque and rotor angle sensor (9) of the steering wheel and the signal wire of the rotor angel by a wire. The differential power steering system of the invention has potential to be used in the traditional vehicle.

Description

technical field [0001] The invention relates to a power steering mechanism applied to an electric vehicle driven independently by steering wheels, more specifically, it relates to a differential power steering system used for an electric vehicle independently driven by steering wheels. Background technique [0002] At present, the commonly used power steering methods include hydraulic power steering (HPS), electrohydraulic power steering (EHPS), electric power steering (EPS), active electric power steering (AEPS) and steering by wire (SBW). The traditional hydraulic power steering with a high penetration rate is gradually being replaced by electric power steering that is energy-saving, environmentally friendly, and well coordinated with steering portability and road feel feedback. Active electric power steering evolved from electric power steering under the background of improving the active safety of automobiles. However, the steer-by-wire, which is currently researched ho...

Claims

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Application Information

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IPC IPC(8): B62D5/04
Inventor 靳立强王军年王庆年曾小华胡长建王加雪宋世欣
Owner JILIN UNIV
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