A steering mechanism having a piezoelectric element to adjust component clearance and preload based on steering inputs, road inputs, and time in service. The piezoelectric element positioned in the steering mechanism for electric adjustment so that the clearance and preload can be adjusted electrically in response to steering inputs, road inputs, and time in service. This arrangement allows for low preload and low friction when the vehicle is being driven over smooth road conditions. When a rough road condition is detected both clearance and preload can be electrically increased to minimize noise. The disclosed inventive concept may find application in a variety of steering mechanisms to minimize or eliminate NVH when the vehicle is driven over rough surfaces. Without limitation, the piezoelectric element may be provided in rack and pinion electric power assisted steering systems or in worm and wheel (steering column) electric power assisted steering systems.
Clearance and preload adjustment for steering mechanism using piezoelectric elements
2020-04-14
Patent
Electronic Resource
English
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