No.1021E 2025Special Edition on Mobility Technologies Longer Stroke of Electric Adjust Steering Column |
| Category | TECHNICAL REPORTS |
|---|---|
| Author | T. MIYAGI T. SUZUKI Product Development Dept., JTEKT COLUMN SYSTEMS CORPORATION |
| Abstract | As the steering wheel moves away from the steering column, the resonance frequency decreases, and as it moves closer, the frequency increases, leading to an increased risk of vehicle resonance at the telescopic position. Such resonance may result in abnormal noise or vibrations, causing discomfort to the driver. This issue is particularly significant in steering columns with long strokes designed for extended telescopic movement in applications like autonomous driving, compared to conventional electric columns. The difference in resonance frequency between these and conventional columns is expected to widen, and with the current design, reducing this difference poses a challenge. The cause of the frequency variance is attributed to the fluctuating distance between the component that controls the gap in the drive jacket and the steering wheel. To address this issue, we repositioned the preload component from the fixed side to the drive side. This adjustment successfully reduced the resonance frequency variance by approximately 40% to 50%. |
| Keyword | electric adjust steering column, long stroke, anti-backlash structure |
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