EPS 각도센서용 토션 바의 압입공정의 휨과 회전현상 분석 = Analysis of Bending and Rotation Phenomenon of Torsion Bar During Press-fitting Process for EPS Angle Sensors

다국어 초록 (Multilingual Abstract)

The torsion bar, which is a steering torque sensor, is mounted between the steering pinion and the input shaft in the IPA(input pinion assembly). Accurate torque measurement is important to improve the sense of operation, and the straightness of the torsion bar can affect torque measurement. In this study, the amount of bending was measured and the exact shape was analyzed regarding the bending phenomenon in the press-fitting process for torsion bars. The effect of alignment error was analyzed through finite element forming analysis. Process data analysis was conducted for the double-end press fit model. If there is an alignment error of about 10% of the serration tooth height, the indentation load is reduced by about 10%. If there is an alignment error, the torsion bar is rotated.

참고문헌 (Reference)

1 "https://www.bosch-mobility.com/en/solutions/steering/torque-sensor/"

2 J. Namgung, "Straightening and Measuring of Deflection of Torsion Bars for R-EPS" 850-, 2021

3 S. F, "EPS Sensor Torsion Bar Design and Structure Analysis" 04051-, 2018

4 D. Kim, "Analysis of system impact and improvement of performance by increasing MDPS torsion bar rigidity" 478-483, 2018

5 Y. Chae, "Analysis of Torque Changes according to Run Out of Torsion Bar" 580-581, 2022