Steering Assist Rack Connection for Coil-Failure Vibration Control
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Dual winding motors in steering systems experience vibration due to coil failures, which is a challenge in redundancy systems where a single ECU fails or is compromised.
Innovation Solution
A steering assist device with a stator and rotator configuration that adjusts the direction of connection with the rack bar based on the winding pattern of the stator to minimize vibration when coils fail.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a dual winding motor is used in the steering system, then the reliability of the steering system is improved through redundancy, but vibration occurs when coil failures happen
Solution Approach 1:
The patent applies dynamics by making the connector's connection direction adjustable rather than fixed. The connector can change its connection direction with the rack bar based on the winding pattern of the stator, allowing the system to adapt dynamically to different coil failure scenarios and minimize vibration in each case
Solution Approach 2:
The patent changes the physical parameter of connection direction to resolve the vibration problem. By altering the connection direction parameter based on which coils are functional, the system can optimize performance and minimize harmful vibrations resulting from coil failures
2Device complexity
If the connector connection direction is fixed, then the device structure is simple, but vibration cannot be minimized when coil failures occur
Solution Approach 1:
The connector is designed with dynamic adjustability, allowing it to change connection direction based on operational conditions (coil functionality). This dynamic capability enables vibration minimization without requiring complex active control systems, achieving a balance between simplicity and effectiveness
3Object-generated harmful factors
If the connector connection direction is adjusted based on winding pattern, then vibration is minimized when coils fail, but the device complexity increases
Solution Approach 1:
The dynamic connector design allows the system to adapt to different coil failure modes by changing connection direction, effectively minimizing vibration. The complexity increase is justified by the significant reduction in harmful vibrations and improved system reliability under failure conditions
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Reduces noise and vibration in the steering assist device by altering the connection direction with the rack bar, effectively managing vibration caused by coil failures.
Implementation Method 1
a stator (120) around which a plurality of coils are wound, and a rotator (110) rotated by the stator
Data Source
AI summary
The present disclosure relates to a steering-assisting device. Specifically, a steering-assisting device according to the present disclosure comprises: a stator having a plurality of coils wound thereon; a rotor which is rotated by the stator; and a connection part for transferring rotation force generated in accordance with rotation of the rotor to a rack bar, wherein the connection part is connected to the rack bar in a manner for minimizing vibration generated according to a winding pattern of the stator when at least one of the coils of the stator malfunctions.