Transactions of the Korean Society of Automotive Engineers (한국자동차공학회논문집)

The Korean Society of Automotive Engineers (한국자동차공학회)
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Evaluation of Performance and Development of Control Method of a New Electric Power Steering System(EPS-TT)

새로운 전동식 동력 조향 장치 (EPS-TT)의 성능 평가 및 제어방법 개발

  • 송정훈 (인제대학교 기계자동차공학부) ;
  • 부광석 (인제대학교 기계자동차공학부) ;
  • 이종일 (인제대학교 대학원 기계공학과)
  • Published : 2004.09.01
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Abstract

A new column type electric power steering system (EPS-TT) is proposed in this study. The remarkable features of EPS-TT are its opto-isolated torque sensor and assist torque control methodology. EPS-TT uses a uni-directional motor and two clutches. Full order and simplified models for EPS-TT are developed to evaluate the EPS-TT. A full car model is also used to investigate the vehicle responses. A PID control logic is designed to control the torque of the assist motor. Various sinusoidal inputs are applied to the system and the resulting performances are analyzed. The results prove that the performances achieved by the EPS-TT are improved compared to those of a conventional EPS-TT across the frequency domain. In addition, it is inexpensive and easy to control the motor. The results of the full order steering system model are similar to those simplified model, but the vehicle responses are slightly different.

Keywords

References

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