전자클러치를 이용한 전기식 파워 스티어링 시스템 동적 특성 해석

다국어 초록 (Multilingual Abstract)

The power steering system for vehicles is becoming essential for supporting the steering efforts of the drivers, especially for the parking lot maneuver of a vehicle.<br/>
Electric Power Steeling EPS, system has attracted much attention for their advantages in terms of the economy and has been widely adopted as automotive power steeling equipment in recent vears.<br/>
Most of EPS is developed so far using bi-directional motor to assist steeling torque. This type of EPS has a problem that it can not response rapidly for steering input like a abrupt turning because the motor has deadly-time for changing rotational direction.<br/>
To solve the problem associated with the bi-directional motor, this paper proposes a new power steering system which is driven by uni-directional motor and its direction is controlled by electro-magnetic clutches. The motor of the new type of EPS rotates in only one direction and transmits steering torque in either the left or right direction. When the rotation is required the response time of the electro-magnetic clutches is shorter than one of the bidirectional motor. Thus, the new EPS produces precise steering ability and high energy efficiency.<br/>
In this paper. a mathematical model of the type of electric power steering(EPS) system controlled by electro-magnetic clutches is presented and its dynamic characteristics is also investigated and analyzed for improving maneuverability of the EPS. The steering torque and the control ability could be also validated even under the various steering angle inputs.<br/>
As the results of this study, a design parameter can be found out and is analyzed for improving the maneuverability so that the whole steering performance of the vehicle-steering system can be evaluated.<br/>
If the above problems included in the conventional EPS are overcome by optimal design of the design parameters. the new type of EPS will improve stability and drive-ability of the vehicles.<br/>

목차 (Table of Contents)

• 1. 서론
  
• 2. 전기식 파워 스티어링 시스템
  
• 3. 파워 스티어링 수학적 모델
  
• 4. 시뮬레이션 결과 및 검토
  
• 5. 결론
  
• [참고문헌]