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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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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

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

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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Embodiment Construction

[0033] Example embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments may, however, be embodied in many forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete and fully convey the concept of example embodiments to those skilled in the art. The described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

[0034] Furthermore, the drawings are merely schematic illustrations of the invention and are not necessarily drawn to scale. The same reference numerals in the drawings denote the same or similar parts, and thus repeated descriptions thereof will be omitted. Some of the block diagrams shown in the drawings are functional entities and do not necessarily correspond to physically or logically separate entities. These functional entities may be impleme...

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PUM

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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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