Electric power steering system and power assisting device thereof

A technology of booster devices and power components, which is applied in the direction of electric steering mechanisms, power steering mechanisms, steering mechanisms, etc., can solve the problems of unfavorable low-speed applications, insufficient consideration of mechanical redundancy, and high cost, so as to reduce control costs, stabilize installation, Achieve the effect of installation

Pending Publication Date: 2022-03-04
NEXTEER AUTOMOTIVE SYST SUZHOU
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

At the same time, in this way, in addition to electrical redundancy, mechanical redundancy is not fully considered
[0003] T

Method used

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  • Electric power steering system and power assisting device thereof
  • Electric power steering system and power assisting device thereof
  • Electric power steering system and power assisting device thereof

Examples

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Example Embodiment

[0033] An example embodiment will now be described more fully with reference to the accompanying drawings. However, an example embodiment can be implemented in a variety of forms and is not to be construed as being limited to the examples set forth herein; in contrast, the present invention will make the present invention will be more comprehensive and complete, and the concept of example embodiments is fully conveyed A technician to those skilled in the art. The features, structures, or characteristics described may be incorporated in one or more embodiments in any suitable manner.

[0034] Further, the drawings are only schematic illustrations of the present invention, and is not necessarily drawn. The same reference numerals in the figures represent the same or similar portions, and thus the repeated description thereof will be omitted. Some of the block diagrams shown in the drawings are functional entities, and do not necessarily have to correspond to physical or logically in...

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Abstract

The invention provides an electric power steering system and a power assisting device thereof, and the power assisting device comprises a power module which comprises a first power assembly which comprises a first motor and a first controller; the second power assembly comprises a second motor and a second controller, and the first controller and the second controller receive a common steering instruction; the synchronization module is used for receiving a redundant signal, calculating the common steering instruction according to the redundant signal, and transmitting the common steering instruction to the first controller and the second controller; the auxiliary mechanical module comprises a shell, and the power module and the synchronization module are both installed on the shell; the common worm gear is mounted on the shell; the first worm is connected to the first motor and meshed with the common worm gear; and the second worm is connected to the second motor and meshed with the common worm gear, and the second worm is parallel to the first worm. The first power assembly and the second power assembly are completely isolated, and the system safety is improved.

Description

technical field [0001] The invention relates to an electric steering assist system, in particular to an electric steering assist system and a power assist device thereof. Background technique [0002] Currently, more and more vehicles require steering redundancy to guarantee autonomous driving performance. A typical redundant steering system uses a dual inverter motor and dual single-chip microcomputer structure. But such a structure cannot guarantee 100% electrical isolation of the double inverter motor and the double single-chip microcomputer structure. At present, most electric power steering systems share the motor shaft of the sampling motor (double-wound motor), and this method has high requirements for control. At the same time, in this way, in addition to electrical redundancy, mechanical redundancy is not fully considered. [0003] Therefore, the cost of current redundant steering systems is relatively high, which is not conducive to low-speed applications. Con...

Claims

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Application Information

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IPC IPC(8): B62D5/04B62D3/04
CPCB62D5/0457B62D5/046B62D3/04Y02T10/72
Inventor 杨昆尹卫民
Owner NEXTEER AUTOMOTIVE SYST SUZHOU
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