타이어 공기압 제어시스템의 개발과 그에 따른 타이어 특성에 대한 연구 = Development of Control System for Air Pressure of Tires and Study about Characteristics of a Tire Using It

다국어 초록 (Multilingual Abstract)

New concept of on-line pressure control system of tires was proposed. And the characteristics of tire for varying air pressure using the proposed system was investigated. Compressed air from a compressor that used brake torque was stored in a reservour tank and supplied with a on-off solenoid valve. A rotating air supplying device was specially designed for rotating wheels. Air was injected into or ventilated from tires through it. The electronic control unit activated the solenoid valve using PWM output with feedback input, like tire pressure, road condition and other driving input. To show the effect of pressure on the characteristics of tire, simulation device for one wheel was made using the developed system. The result of this study showed that the stiffness of tire was increased with pressure of tire and cornering force was approximated as the response of the first order system. The system response for step change of pressure showed that it was enough faster than that of cornering force.